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WSL2-Linux-Kernel
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Merge branch 'master' of git://oss.sgi.com:8090/xfs/linux-2.6

This commit is contained in:
Niv Sardi 2008-11-07 15:07:12 +11:00
Родитель 75fa67706c 91b7771251
Коммит dcd7b4e5c0
84 изменённых файлов: 8185 добавлений и 10267 удалений
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4
Documentation/filesystems/xfs.txt
Просмотреть файл

@ -229,10 +229,6 @@ The following sysctls are available for the XFS filesystem:
ISGID bit is cleared if the irix_sgid_inherit compatibility sysctl
is set.
fs.xfs.restrict_chown (Min: 0 Default: 1 Max: 1)
Controls whether unprivileged users can use chown to "give away"
a file to another user.
fs.xfs.inherit_sync (Min: 0 Default: 1 Max: 1)
Setting this to "1" will cause the "sync" flag set
by the xfs_io(8) chattr command on a directory to be

218
fs/inode.c
Просмотреть файл

@ -108,83 +108,99 @@ static void wake_up_inode(struct inode *inode)
wake_up_bit(&inode->i_state, __I_LOCK);
}
static struct inode *alloc_inode(struct super_block *sb)
/**
* inode_init_always - perform inode structure intialisation
* @sb - superblock inode belongs to.
* @inode - inode to initialise
*
* These are initializations that need to be done on every inode
* allocation as the fields are not initialised by slab allocation.
*/
struct inode *inode_init_always(struct super_block *sb, struct inode *inode)
{
static const struct address_space_operations empty_aops;
static struct inode_operations empty_iops;
static const struct file_operations empty_fops;
struct address_space * const mapping = &inode->i_data;
inode->i_sb = sb;
inode->i_blkbits = sb->s_blocksize_bits;
inode->i_flags = 0;
atomic_set(&inode->i_count, 1);
inode->i_op = &empty_iops;
inode->i_fop = &empty_fops;
inode->i_nlink = 1;
atomic_set(&inode->i_writecount, 0);
inode->i_size = 0;
inode->i_blocks = 0;
inode->i_bytes = 0;
inode->i_generation = 0;
#ifdef CONFIG_QUOTA
memset(&inode->i_dquot, 0, sizeof(inode->i_dquot));
#endif
inode->i_pipe = NULL;
inode->i_bdev = NULL;
inode->i_cdev = NULL;
inode->i_rdev = 0;
inode->dirtied_when = 0;
if (security_inode_alloc(inode)) {
if (inode->i_sb->s_op->destroy_inode)
inode->i_sb->s_op->destroy_inode(inode);
else
kmem_cache_free(inode_cachep, (inode));
return NULL;
}
spin_lock_init(&inode->i_lock);
lockdep_set_class(&inode->i_lock, &sb->s_type->i_lock_key);
mutex_init(&inode->i_mutex);
lockdep_set_class(&inode->i_mutex, &sb->s_type->i_mutex_key);
init_rwsem(&inode->i_alloc_sem);
lockdep_set_class(&inode->i_alloc_sem, &sb->s_type->i_alloc_sem_key);
mapping->a_ops = &empty_aops;
mapping->host = inode;
mapping->flags = 0;
mapping_set_gfp_mask(mapping, GFP_HIGHUSER_PAGECACHE);
mapping->assoc_mapping = NULL;
mapping->backing_dev_info = &default_backing_dev_info;
mapping->writeback_index = 0;
/*
* If the block_device provides a backing_dev_info for client
* inodes then use that. Otherwise the inode share the bdev's
* backing_dev_info.
*/
if (sb->s_bdev) {
struct backing_dev_info *bdi;
bdi = sb->s_bdev->bd_inode_backing_dev_info;
if (!bdi)
bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info;
mapping->backing_dev_info = bdi;
}
inode->i_private = NULL;
inode->i_mapping = mapping;
return inode;
}
EXPORT_SYMBOL(inode_init_always);
static struct inode *alloc_inode(struct super_block *sb)
{
struct inode *inode;
if (sb->s_op->alloc_inode)
inode = sb->s_op->alloc_inode(sb);
else
inode = (struct inode *) kmem_cache_alloc(inode_cachep, GFP_KERNEL);
inode = kmem_cache_alloc(inode_cachep, GFP_KERNEL);
if (inode) {
struct address_space * const mapping = &inode->i_data;
inode->i_sb = sb;
inode->i_blkbits = sb->s_blocksize_bits;
inode->i_flags = 0;
atomic_set(&inode->i_count, 1);
inode->i_op = &empty_iops;
inode->i_fop = &empty_fops;
inode->i_nlink = 1;
atomic_set(&inode->i_writecount, 0);
inode->i_size = 0;
inode->i_blocks = 0;
inode->i_bytes = 0;
inode->i_generation = 0;
#ifdef CONFIG_QUOTA
memset(&inode->i_dquot, 0, sizeof(inode->i_dquot));
#endif
inode->i_pipe = NULL;
inode->i_bdev = NULL;
inode->i_cdev = NULL;
inode->i_rdev = 0;
inode->dirtied_when = 0;
if (security_inode_alloc(inode)) {
if (inode->i_sb->s_op->destroy_inode)
inode->i_sb->s_op->destroy_inode(inode);
else
kmem_cache_free(inode_cachep, (inode));
return NULL;
}
spin_lock_init(&inode->i_lock);
lockdep_set_class(&inode->i_lock, &sb->s_type->i_lock_key);
mutex_init(&inode->i_mutex);
lockdep_set_class(&inode->i_mutex, &sb->s_type->i_mutex_key);
init_rwsem(&inode->i_alloc_sem);
lockdep_set_class(&inode->i_alloc_sem, &sb->s_type->i_alloc_sem_key);
mapping->a_ops = &empty_aops;
mapping->host = inode;
mapping->flags = 0;
mapping_set_gfp_mask(mapping, GFP_HIGHUSER_PAGECACHE);
mapping->assoc_mapping = NULL;
mapping->backing_dev_info = &default_backing_dev_info;
mapping->writeback_index = 0;
/*
* If the block_device provides a backing_dev_info for client
* inodes then use that. Otherwise the inode share the bdev's
* backing_dev_info.
*/
if (sb->s_bdev) {
struct backing_dev_info *bdi;
bdi = sb->s_bdev->bd_inode_backing_dev_info;
if (!bdi)
bdi = sb->s_bdev->bd_inode->i_mapping->backing_dev_info;
mapping->backing_dev_info = bdi;
}
inode->i_private = NULL;
inode->i_mapping = mapping;
}
return inode;
if (inode)
return inode_init_always(sb, inode);
return NULL;
}
void destroy_inode(struct inode *inode)
@ -196,6 +212,7 @@ void destroy_inode(struct inode *inode)
else
kmem_cache_free(inode_cachep, (inode));
}
EXPORT_SYMBOL(destroy_inode);
/*
@ -534,6 +551,49 @@ repeat:
return node ? inode : NULL;
}
static unsigned long hash(struct super_block *sb, unsigned long hashval)
{
unsigned long tmp;
tmp = (hashval * (unsigned long)sb) ^ (GOLDEN_RATIO_PRIME + hashval) /
L1_CACHE_BYTES;
tmp = tmp ^ ((tmp ^ GOLDEN_RATIO_PRIME) >> I_HASHBITS);
return tmp & I_HASHMASK;
}
static inline void
__inode_add_to_lists(struct super_block *sb, struct hlist_head *head,
struct inode *inode)
{
inodes_stat.nr_inodes++;
list_add(&inode->i_list, &inode_in_use);
list_add(&inode->i_sb_list, &sb->s_inodes);
if (head)
hlist_add_head(&inode->i_hash, head);
}
/**
* inode_add_to_lists - add a new inode to relevant lists
* @sb - superblock inode belongs to.
* @inode - inode to mark in use
*
* When an inode is allocated it needs to be accounted for, added to the in use
* list, the owning superblock and the inode hash. This needs to be done under
* the inode_lock, so export a function to do this rather than the inode lock
* itself. We calculate the hash list to add to here so it is all internal
* which requires the caller to have already set up the inode number in the
* inode to add.
*/
void inode_add_to_lists(struct super_block *sb, struct inode *inode)
{
struct hlist_head *head = inode_hashtable + hash(sb, inode->i_ino);
spin_lock(&inode_lock);
__inode_add_to_lists(sb, head, inode);
spin_unlock(&inode_lock);
}
EXPORT_SYMBOL_GPL(inode_add_to_lists);
/**
* new_inode - obtain an inode
* @sb: superblock
@ -561,9 +621,7 @@ struct inode *new_inode(struct super_block *sb)
inode = alloc_inode(sb);
if (inode) {
spin_lock(&inode_lock);
inodes_stat.nr_inodes++;
list_add(&inode->i_list, &inode_in_use);
list_add(&inode->i_sb_list, &sb->s_inodes);
__inode_add_to_lists(sb, NULL, inode);
inode->i_ino = ++last_ino;
inode->i_state = 0;
spin_unlock(&inode_lock);
@ -622,10 +680,7 @@ static struct inode * get_new_inode(struct super_block *sb, struct hlist_head *h
if (set(inode, data))
goto set_failed;
inodes_stat.nr_inodes++;
list_add(&inode->i_list, &inode_in_use);
list_add(&inode->i_sb_list, &sb->s_inodes);
hlist_add_head(&inode->i_hash, head);
__inode_add_to_lists(sb, head, inode);
inode->i_state = I_LOCK|I_NEW;
spin_unlock(&inode_lock);
@ -671,10 +726,7 @@ static struct inode * get_new_inode_fast(struct super_block *sb, struct hlist_he
old = find_inode_fast(sb, head, ino);
if (!old) {
inode->i_ino = ino;
inodes_stat.nr_inodes++;
list_add(&inode->i_list, &inode_in_use);
list_add(&inode->i_sb_list, &sb->s_inodes);
hlist_add_head(&inode->i_hash, head);
__inode_add_to_lists(sb, head, inode);
inode->i_state = I_LOCK|I_NEW;
spin_unlock(&inode_lock);
@ -698,16 +750,6 @@ static struct inode * get_new_inode_fast(struct super_block *sb, struct hlist_he
return inode;
}
static unsigned long hash(struct super_block *sb, unsigned long hashval)
{
unsigned long tmp;
tmp = (hashval * (unsigned long)sb) ^ (GOLDEN_RATIO_PRIME + hashval) /
L1_CACHE_BYTES;
tmp = tmp ^ ((tmp ^ GOLDEN_RATIO_PRIME) >> I_HASHBITS);
return tmp & I_HASHMASK;
}
/**
* iunique - get a unique inode number
* @sb: superblock

4
fs/xfs/Makefile
Просмотреть файл

@ -91,7 +91,8 @@ xfs-y += xfs_alloc.o \
xfs_dmops.o \
xfs_qmops.o
xfs-$(CONFIG_XFS_TRACE) += xfs_dir2_trace.o
xfs-$(CONFIG_XFS_TRACE) += xfs_btree_trace.o \
xfs_dir2_trace.o
# Objects in linux/
xfs-y += $(addprefix $(XFS_LINUX)/, \
@ -106,6 +107,7 @@ xfs-y += $(addprefix $(XFS_LINUX)/, \
xfs_iops.o \
xfs_lrw.o \
xfs_super.o \
xfs_sync.o \
xfs_vnode.o \
xfs_xattr.o)

2
fs/xfs/linux-2.6/xfs_aops.c
Просмотреть файл

@ -191,7 +191,7 @@ xfs_setfilesize(
ip->i_d.di_size = isize;
ip->i_update_core = 1;
ip->i_update_size = 1;
mark_inode_dirty_sync(ioend->io_inode);
xfs_mark_inode_dirty_sync(ip);
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);

10
fs/xfs/linux-2.6/xfs_cred.h
Просмотреть файл

@ -24,15 +24,7 @@
* Credentials
*/
typedef struct cred {
/* EMPTY */
/* EMPTY */
} cred_t;
extern struct cred *sys_cred;
/* this is a hack.. (assumes sys_cred is the only cred_t in the system) */
static inline int capable_cred(cred_t *cr, int cid)
{
return (cr == sys_cred) ? 1 : capable(cid);
}
#endif /* __XFS_CRED_H__ */

8
fs/xfs/linux-2.6/xfs_globals.c
Просмотреть файл

@ -26,7 +26,6 @@
*/
xfs_param_t xfs_params = {
/* MIN DFLT MAX */
.restrict_chown = { 0, 1, 1 },
.sgid_inherit = { 0, 0, 1 },
.symlink_mode = { 0, 0, 1 },
.panic_mask = { 0, 0, 255 },
@ -43,10 +42,3 @@ xfs_param_t xfs_params = {
.inherit_nodfrg = { 0, 1, 1 },
.fstrm_timer = { 1, 30*100, 3600*100},
};
/*
* Global system credential structure.
*/
static cred_t sys_cred_val;
cred_t *sys_cred = &sys_cred_val;

1
fs/xfs/linux-2.6/xfs_globals.h
Просмотреть файл

@ -19,6 +19,5 @@
#define __XFS_GLOBALS_H__
extern uint64_t xfs_panic_mask; /* set to cause more panics */
extern struct cred *sys_cred;
#endif /* __XFS_GLOBALS_H__ */

9
fs/xfs/linux-2.6/xfs_ioctl.c
Просмотреть файл

@ -691,8 +691,7 @@ xfs_ioc_space(
if (ioflags & IO_INVIS)
attr_flags |= XFS_ATTR_DMI;
error = xfs_change_file_space(ip, cmd, &bf, filp->f_pos,
NULL, attr_flags);
error = xfs_change_file_space(ip, cmd, &bf, filp->f_pos, attr_flags);
return -error;
}
@ -1007,7 +1006,7 @@ xfs_ioctl_setattr(
* to the file owner ID, except in cases where the
* CAP_FSETID capability is applicable.
*/
if (current->fsuid != ip->i_d.di_uid && !capable(CAP_FOWNER)) {
if (current_fsuid() != ip->i_d.di_uid && !capable(CAP_FOWNER)) {
code = XFS_ERROR(EPERM);
goto error_return;
}
@ -1104,10 +1103,6 @@ xfs_ioctl_setattr(
/*
* Change file ownership. Must be the owner or privileged.
* If the system was configured with the "restricted_chown"
* option, the owner is not permitted to give away the file,
* and can change the group id only to a group of which he
* or she is a member.
*/
if (mask & FSX_PROJID) {
/*

25
fs/xfs/linux-2.6/xfs_iops.c
Просмотреть файл

@ -64,14 +64,14 @@ xfs_synchronize_atime(
{
struct inode *inode = VFS_I(ip);
if (inode) {
if (!(inode->i_state & I_CLEAR)) {
ip->i_d.di_atime.t_sec = (__int32_t)inode->i_atime.tv_sec;
ip->i_d.di_atime.t_nsec = (__int32_t)inode->i_atime.tv_nsec;
}
}
/*
* If the linux inode exists, mark it dirty.
* If the linux inode is valid, mark it dirty.
* Used when commiting a dirty inode into a transaction so that
* the inode will get written back by the linux code
*/
@ -81,7 +81,7 @@ xfs_mark_inode_dirty_sync(
{
struct inode *inode = VFS_I(ip);
if (inode)
if (!(inode->i_state & (I_WILL_FREE|I_FREEING|I_CLEAR)))
mark_inode_dirty_sync(inode);
}
@ -128,7 +128,7 @@ xfs_ichgtime(
if (sync_it) {
SYNCHRONIZE();
ip->i_update_core = 1;
mark_inode_dirty_sync(inode);
xfs_mark_inode_dirty_sync(ip);
}
}
@ -601,7 +601,7 @@ xfs_vn_setattr(
struct dentry *dentry,
struct iattr *iattr)
{
return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0, NULL);
return -xfs_setattr(XFS_I(dentry->d_inode), iattr, 0);
}
/*
@ -642,7 +642,7 @@ xfs_vn_fallocate(
xfs_ilock(ip, XFS_IOLOCK_EXCL);
error = xfs_change_file_space(ip, XFS_IOC_RESVSP, &bf,
0, NULL, XFS_ATTR_NOLOCK);
0, XFS_ATTR_NOLOCK);
if (!error && !(mode & FALLOC_FL_KEEP_SIZE) &&
offset + len > i_size_read(inode))
new_size = offset + len;
@ -653,7 +653,7 @@ xfs_vn_fallocate(
iattr.ia_valid = ATTR_SIZE;
iattr.ia_size = new_size;
error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK, NULL);
error = xfs_setattr(ip, &iattr, XFS_ATTR_NOLOCK);
}
xfs_iunlock(ip, XFS_IOLOCK_EXCL);
@ -766,12 +766,21 @@ xfs_diflags_to_iflags(
* When reading existing inodes from disk this is called directly
* from xfs_iget, when creating a new inode it is called from
* xfs_ialloc after setting up the inode.
*
* We are always called with an uninitialised linux inode here.
* We need to initialise the necessary fields and take a reference
* on it.
*/
void
xfs_setup_inode(
struct xfs_inode *ip)
{
struct inode *inode = ip->i_vnode;
struct inode *inode = &ip->i_vnode;
inode->i_ino = ip->i_ino;
inode->i_state = I_NEW|I_LOCK;
inode_add_to_lists(ip->i_mount->m_super, inode);
ASSERT(atomic_read(&inode->i_count) == 1);
inode->i_mode = ip->i_d.di_mode;
inode->i_nlink = ip->i_d.di_nlink;

2
fs/xfs/linux-2.6/xfs_linux.h
Просмотреть файл

@ -77,6 +77,7 @@
#include <linux/spinlock.h>
#include <linux/random.h>
#include <linux/ctype.h>
#include <linux/writeback.h>
#include <asm/page.h>
#include <asm/div64.h>
@ -107,7 +108,6 @@
#undef HAVE_PERCPU_SB /* per cpu superblock counters are a 2.6 feature */
#endif
#define restricted_chown xfs_params.restrict_chown.val
#define irix_sgid_inherit xfs_params.sgid_inherit.val
#define irix_symlink_mode xfs_params.symlink_mode.val
#define xfs_panic_mask xfs_params.panic_mask.val

4
fs/xfs/linux-2.6/xfs_stats.c
Просмотреть файл

@ -53,6 +53,10 @@ xfs_read_xfsstats(
{ "icluster", XFSSTAT_END_INODE_CLUSTER },
{ "vnodes", XFSSTAT_END_VNODE_OPS },
{ "buf", XFSSTAT_END_BUF },
{ "abtb2", XFSSTAT_END_ABTB_V2 },
{ "abtc2", XFSSTAT_END_ABTC_V2 },
{ "bmbt2", XFSSTAT_END_BMBT_V2 },
{ "ibt2", XFSSTAT_END_IBT_V2 },
};
/* Loop over all stats groups */

65
fs/xfs/linux-2.6/xfs_stats.h
Просмотреть файл

@ -118,6 +118,71 @@ struct xfsstats {
__uint32_t xb_page_retries;
__uint32_t xb_page_found;
__uint32_t xb_get_read;
/* Version 2 btree counters */
#define XFSSTAT_END_ABTB_V2 (XFSSTAT_END_BUF+15)
__uint32_t xs_abtb_2_lookup;
__uint32_t xs_abtb_2_compare;
__uint32_t xs_abtb_2_insrec;
__uint32_t xs_abtb_2_delrec;
__uint32_t xs_abtb_2_newroot;
__uint32_t xs_abtb_2_killroot;
__uint32_t xs_abtb_2_increment;
__uint32_t xs_abtb_2_decrement;
__uint32_t xs_abtb_2_lshift;
__uint32_t xs_abtb_2_rshift;
__uint32_t xs_abtb_2_split;
__uint32_t xs_abtb_2_join;
__uint32_t xs_abtb_2_alloc;
__uint32_t xs_abtb_2_free;
__uint32_t xs_abtb_2_moves;
#define XFSSTAT_END_ABTC_V2 (XFSSTAT_END_ABTB_V2+15)
__uint32_t xs_abtc_2_lookup;
__uint32_t xs_abtc_2_compare;
__uint32_t xs_abtc_2_insrec;
__uint32_t xs_abtc_2_delrec;
__uint32_t xs_abtc_2_newroot;
__uint32_t xs_abtc_2_killroot;
__uint32_t xs_abtc_2_increment;
__uint32_t xs_abtc_2_decrement;
__uint32_t xs_abtc_2_lshift;
__uint32_t xs_abtc_2_rshift;
__uint32_t xs_abtc_2_split;
__uint32_t xs_abtc_2_join;
__uint32_t xs_abtc_2_alloc;
__uint32_t xs_abtc_2_free;
__uint32_t xs_abtc_2_moves;
#define XFSSTAT_END_BMBT_V2 (XFSSTAT_END_ABTC_V2+15)
__uint32_t xs_bmbt_2_lookup;
__uint32_t xs_bmbt_2_compare;
__uint32_t xs_bmbt_2_insrec;
__uint32_t xs_bmbt_2_delrec;
__uint32_t xs_bmbt_2_newroot;
__uint32_t xs_bmbt_2_killroot;
__uint32_t xs_bmbt_2_increment;
__uint32_t xs_bmbt_2_decrement;
__uint32_t xs_bmbt_2_lshift;
__uint32_t xs_bmbt_2_rshift;
__uint32_t xs_bmbt_2_split;
__uint32_t xs_bmbt_2_join;
__uint32_t xs_bmbt_2_alloc;
__uint32_t xs_bmbt_2_free;
__uint32_t xs_bmbt_2_moves;
#define XFSSTAT_END_IBT_V2 (XFSSTAT_END_BMBT_V2+15)
__uint32_t xs_ibt_2_lookup;
__uint32_t xs_ibt_2_compare;
__uint32_t xs_ibt_2_insrec;
__uint32_t xs_ibt_2_delrec;
__uint32_t xs_ibt_2_newroot;
__uint32_t xs_ibt_2_killroot;
__uint32_t xs_ibt_2_increment;
__uint32_t xs_ibt_2_decrement;
__uint32_t xs_ibt_2_lshift;
__uint32_t xs_ibt_2_rshift;
__uint32_t xs_ibt_2_split;
__uint32_t xs_ibt_2_join;
__uint32_t xs_ibt_2_alloc;
__uint32_t xs_ibt_2_free;
__uint32_t xs_ibt_2_moves;
/* Extra precision counters */
__uint64_t xs_xstrat_bytes;
__uint64_t xs_write_bytes;

846
fs/xfs/linux-2.6/xfs_super.c
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3
fs/xfs/linux-2.6/xfs_super.h
Просмотреть файл

@ -101,9 +101,6 @@ struct block_device;
extern __uint64_t xfs_max_file_offset(unsigned int);
extern void xfs_flush_inode(struct xfs_inode *);
extern void xfs_flush_device(struct xfs_inode *);
extern void xfs_blkdev_issue_flush(struct xfs_buftarg *);
extern const struct export_operations xfs_export_operations;

763
fs/xfs/linux-2.6/xfs_sync.c Normal file
Просмотреть файл

@ -0,0 +1,763 @@
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_types.h"
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_btree.h"
#include "xfs_dir2_sf.h"
#include "xfs_attr_sf.h"
#include "xfs_inode.h"
#include "xfs_dinode.h"
#include "xfs_error.h"
#include "xfs_mru_cache.h"
#include "xfs_filestream.h"
#include "xfs_vnodeops.h"
#include "xfs_utils.h"
#include "xfs_buf_item.h"
#include "xfs_inode_item.h"
#include "xfs_rw.h"
#include <linux/kthread.h>
#include <linux/freezer.h>
/*
* Sync all the inodes in the given AG according to the
* direction given by the flags.
*/
STATIC int
xfs_sync_inodes_ag(
xfs_mount_t *mp,
int ag,
int flags)
{
xfs_perag_t *pag = &mp->m_perag[ag];
int nr_found;
uint32_t first_index = 0;
int error = 0;
int last_error = 0;
int fflag = XFS_B_ASYNC;
if (flags & SYNC_DELWRI)
fflag = XFS_B_DELWRI;
if (flags & SYNC_WAIT)
fflag = 0; /* synchronous overrides all */
do {
struct inode *inode;
xfs_inode_t *ip = NULL;
int lock_flags = XFS_ILOCK_SHARED;
/*
* use a gang lookup to find the next inode in the tree
* as the tree is sparse and a gang lookup walks to find
* the number of objects requested.
*/
read_lock(&pag->pag_ici_lock);
nr_found = radix_tree_gang_lookup(&pag->pag_ici_root,
(void**)&ip, first_index, 1);
if (!nr_found) {
read_unlock(&pag->pag_ici_lock);
break;
}
/*
* Update the index for the next lookup. Catch overflows
* into the next AG range which can occur if we have inodes
* in the last block of the AG and we are currently
* pointing to the last inode.
*/
first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1);
if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) {
read_unlock(&pag->pag_ici_lock);
break;
}
/* nothing to sync during shutdown */
if (XFS_FORCED_SHUTDOWN(mp)) {
read_unlock(&pag->pag_ici_lock);
return 0;
}
/*
* If we can't get a reference on the inode, it must be
* in reclaim. Leave it for the reclaim code to flush.
*/
inode = VFS_I(ip);
if (!igrab(inode)) {
read_unlock(&pag->pag_ici_lock);
continue;
}
read_unlock(&pag->pag_ici_lock);
/* bad inodes are dealt with elsewhere */
if (is_bad_inode(inode)) {
IRELE(ip);
continue;
}
/*
* If we have to flush data or wait for I/O completion
* we need to hold the iolock.
*/
if ((flags & SYNC_DELWRI) && VN_DIRTY(inode)) {
xfs_ilock(ip, XFS_IOLOCK_SHARED);
lock_flags |= XFS_IOLOCK_SHARED;
error = xfs_flush_pages(ip, 0, -1, fflag, FI_NONE);
if (flags & SYNC_IOWAIT)
vn_iowait(ip);
}
xfs_ilock(ip, XFS_ILOCK_SHARED);
if ((flags & SYNC_ATTR) && !xfs_inode_clean(ip)) {
if (flags & SYNC_WAIT) {
xfs_iflock(ip);
if (!xfs_inode_clean(ip))
error = xfs_iflush(ip, XFS_IFLUSH_SYNC);
else
xfs_ifunlock(ip);
} else if (xfs_iflock_nowait(ip)) {
if (!xfs_inode_clean(ip))
error = xfs_iflush(ip, XFS_IFLUSH_DELWRI);
else
xfs_ifunlock(ip);
}
}
xfs_iput(ip, lock_flags);
if (error)
last_error = error;
/*
* bail out if the filesystem is corrupted.
*/
if (error == EFSCORRUPTED)
return XFS_ERROR(error);
} while (nr_found);
return last_error;
}
int
xfs_sync_inodes(
xfs_mount_t *mp,
int flags)
{
int error;
int last_error;
int i;
int lflags = XFS_LOG_FORCE;
if (mp->m_flags & XFS_MOUNT_RDONLY)
return 0;
error = 0;
last_error = 0;
if (flags & SYNC_WAIT)
lflags |= XFS_LOG_SYNC;
for (i = 0; i < mp->m_sb.sb_agcount; i++) {
if (!mp->m_perag[i].pag_ici_init)
continue;
error = xfs_sync_inodes_ag(mp, i, flags);
if (error)
last_error = error;
if (error == EFSCORRUPTED)
break;
}
if (flags & SYNC_DELWRI)
xfs_log_force(mp, 0, lflags);
return XFS_ERROR(last_error);
}
STATIC int
xfs_commit_dummy_trans(
struct xfs_mount *mp,
uint log_flags)
{
struct xfs_inode *ip = mp->m_rootip;
struct xfs_trans *tp;
int error;
/*
* Put a dummy transaction in the log to tell recovery
* that all others are OK.
*/
tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
error = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp), 0, 0, 0);
if (error) {
xfs_trans_cancel(tp, 0);
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
/* XXX(hch): ignoring the error here.. */
error = xfs_trans_commit(tp, 0);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_log_force(mp, 0, log_flags);
return 0;
}
int
xfs_sync_fsdata(
struct xfs_mount *mp,
int flags)
{
struct xfs_buf *bp;
struct xfs_buf_log_item *bip;
int error = 0;
/*
* If this is xfssyncd() then only sync the superblock if we can
* lock it without sleeping and it is not pinned.
*/
if (flags & SYNC_BDFLUSH) {
ASSERT(!(flags & SYNC_WAIT));
bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
if (!bp)
goto out;
bip = XFS_BUF_FSPRIVATE(bp, struct xfs_buf_log_item *);
if (!bip || !xfs_buf_item_dirty(bip) || XFS_BUF_ISPINNED(bp))
goto out_brelse;
} else {
bp = xfs_getsb(mp, 0);
/*
* If the buffer is pinned then push on the log so we won't
* get stuck waiting in the write for someone, maybe
* ourselves, to flush the log.
*
* Even though we just pushed the log above, we did not have
* the superblock buffer locked at that point so it can
* become pinned in between there and here.
*/
if (XFS_BUF_ISPINNED(bp))
xfs_log_force(mp, 0, XFS_LOG_FORCE);
}
if (flags & SYNC_WAIT)
XFS_BUF_UNASYNC(bp);
else
XFS_BUF_ASYNC(bp);
return xfs_bwrite(mp, bp);
out_brelse:
xfs_buf_relse(bp);
out:
return error;
}
/*
* When remounting a filesystem read-only or freezing the filesystem, we have
* two phases to execute. This first phase is syncing the data before we
* quiesce the filesystem, and the second is flushing all the inodes out after
* we've waited for all the transactions created by the first phase to
* complete. The second phase ensures that the inodes are written to their
* location on disk rather than just existing in transactions in the log. This
* means after a quiesce there is no log replay required to write the inodes to
* disk (this is the main difference between a sync and a quiesce).
*/
/*
* First stage of freeze - no writers will make progress now we are here,
* so we flush delwri and delalloc buffers here, then wait for all I/O to
* complete. Data is frozen at that point. Metadata is not frozen,
* transactions can still occur here so don't bother flushing the buftarg
* because it'll just get dirty again.
*/
int
xfs_quiesce_data(
struct xfs_mount *mp)
{
int error;
/* push non-blocking */
xfs_sync_inodes(mp, SYNC_DELWRI|SYNC_BDFLUSH);
XFS_QM_DQSYNC(mp, SYNC_BDFLUSH);
xfs_filestream_flush(mp);
/* push and block */
xfs_sync_inodes(mp, SYNC_DELWRI|SYNC_WAIT|SYNC_IOWAIT);
XFS_QM_DQSYNC(mp, SYNC_WAIT);
/* write superblock and hoover up shutdown errors */
error = xfs_sync_fsdata(mp, 0);
/* flush data-only devices */
if (mp->m_rtdev_targp)
XFS_bflush(mp->m_rtdev_targp);
return error;
}
STATIC void
xfs_quiesce_fs(
struct xfs_mount *mp)
{
int count = 0, pincount;
xfs_flush_buftarg(mp->m_ddev_targp, 0);
xfs_reclaim_inodes(mp, 0, XFS_IFLUSH_DELWRI_ELSE_ASYNC);
/*
* This loop must run at least twice. The first instance of the loop
* will flush most meta data but that will generate more meta data
* (typically directory updates). Which then must be flushed and
* logged before we can write the unmount record.
*/
do {
xfs_sync_inodes(mp, SYNC_ATTR|SYNC_WAIT);
pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
if (!pincount) {
delay(50);
count++;
}
} while (count < 2);
}
/*
* Second stage of a quiesce. The data is already synced, now we have to take
* care of the metadata. New transactions are already blocked, so we need to
* wait for any remaining transactions to drain out before proceding.
*/
void
xfs_quiesce_attr(
struct xfs_mount *mp)
{
int error = 0;
/* wait for all modifications to complete */
while (atomic_read(&mp->m_active_trans) > 0)
delay(100);
/* flush inodes and push all remaining buffers out to disk */
xfs_quiesce_fs(mp);
ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
/* Push the superblock and write an unmount record */
error = xfs_log_sbcount(mp, 1);
if (error)
xfs_fs_cmn_err(CE_WARN, mp,
"xfs_attr_quiesce: failed to log sb changes. "
"Frozen image may not be consistent.");
xfs_log_unmount_write(mp);
xfs_unmountfs_writesb(mp);
}
/*
* Enqueue a work item to be picked up by the vfs xfssyncd thread.
* Doing this has two advantages:
* - It saves on stack space, which is tight in certain situations
* - It can be used (with care) as a mechanism to avoid deadlocks.
* Flushing while allocating in a full filesystem requires both.
*/
STATIC void
xfs_syncd_queue_work(
struct xfs_mount *mp,
void *data,
void (*syncer)(struct xfs_mount *, void *))
{
struct bhv_vfs_sync_work *work;
work = kmem_alloc(sizeof(struct bhv_vfs_sync_work), KM_SLEEP);
INIT_LIST_HEAD(&work->w_list);
work->w_syncer = syncer;
work->w_data = data;
work->w_mount = mp;
spin_lock(&mp->m_sync_lock);
list_add_tail(&work->w_list, &mp->m_sync_list);
spin_unlock(&mp->m_sync_lock);
wake_up_process(mp->m_sync_task);
}
/*
* Flush delayed allocate data, attempting to free up reserved space
* from existing allocations. At this point a new allocation attempt
* has failed with ENOSPC and we are in the process of scratching our
* heads, looking about for more room...
*/
STATIC void
xfs_flush_inode_work(
struct xfs_mount *mp,
void *arg)
{
struct inode *inode = arg;
filemap_flush(inode->i_mapping);
iput(inode);
}
void
xfs_flush_inode(
xfs_inode_t *ip)
{
struct inode *inode = VFS_I(ip);
igrab(inode);
xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inode_work);
delay(msecs_to_jiffies(500));
}
/*
* This is the "bigger hammer" version of xfs_flush_inode_work...
* (IOW, "If at first you don't succeed, use a Bigger Hammer").
*/
STATIC void
xfs_flush_device_work(
struct xfs_mount *mp,
void *arg)
{
struct inode *inode = arg;
sync_blockdev(mp->m_super->s_bdev);
iput(inode);
}
void
xfs_flush_device(
xfs_inode_t *ip)
{
struct inode *inode = VFS_I(ip);
igrab(inode);
xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_device_work);
delay(msecs_to_jiffies(500));
xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
}
/*
* Every sync period we need to unpin all items, reclaim inodes, sync
* quota and write out the superblock. We might need to cover the log
* to indicate it is idle.
*/
STATIC void
xfs_sync_worker(
struct xfs_mount *mp,
void *unused)
{
int error;
if (!(mp->m_flags & XFS_MOUNT_RDONLY)) {
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
xfs_reclaim_inodes(mp, 0, XFS_IFLUSH_DELWRI_ELSE_ASYNC);
/* dgc: errors ignored here */
error = XFS_QM_DQSYNC(mp, SYNC_BDFLUSH);
error = xfs_sync_fsdata(mp, SYNC_BDFLUSH);
if (xfs_log_need_covered(mp))
error = xfs_commit_dummy_trans(mp, XFS_LOG_FORCE);
}
mp->m_sync_seq++;
wake_up(&mp->m_wait_single_sync_task);
}
STATIC int
xfssyncd(
void *arg)
{
struct xfs_mount *mp = arg;
long timeleft;
bhv_vfs_sync_work_t *work, *n;
LIST_HEAD (tmp);
set_freezable();
timeleft = xfs_syncd_centisecs * msecs_to_jiffies(10);
for (;;) {
timeleft = schedule_timeout_interruptible(timeleft);
/* swsusp */
try_to_freeze();
if (kthread_should_stop() && list_empty(&mp->m_sync_list))
break;
spin_lock(&mp->m_sync_lock);
/*
* We can get woken by laptop mode, to do a sync -
* that's the (only!) case where the list would be
* empty with time remaining.
*/
if (!timeleft || list_empty(&mp->m_sync_list)) {
if (!timeleft)
timeleft = xfs_syncd_centisecs *
msecs_to_jiffies(10);
INIT_LIST_HEAD(&mp->m_sync_work.w_list);
list_add_tail(&mp->m_sync_work.w_list,
&mp->m_sync_list);
}
list_for_each_entry_safe(work, n, &mp->m_sync_list, w_list)
list_move(&work->w_list, &tmp);
spin_unlock(&mp->m_sync_lock);
list_for_each_entry_safe(work, n, &tmp, w_list) {
(*work->w_syncer)(mp, work->w_data);
list_del(&work->w_list);
if (work == &mp->m_sync_work)
continue;
kmem_free(work);
}
}
return 0;
}
int
xfs_syncd_init(
struct xfs_mount *mp)
{
mp->m_sync_work.w_syncer = xfs_sync_worker;
mp->m_sync_work.w_mount = mp;
mp->m_sync_task = kthread_run(xfssyncd, mp, "xfssyncd");
if (IS_ERR(mp->m_sync_task))
return -PTR_ERR(mp->m_sync_task);
return 0;
}
void
xfs_syncd_stop(
struct xfs_mount *mp)
{
kthread_stop(mp->m_sync_task);
}
int
xfs_reclaim_inode(
xfs_inode_t *ip,
int locked,
int sync_mode)
{
xfs_perag_t *pag = xfs_get_perag(ip->i_mount, ip->i_ino);
/* The hash lock here protects a thread in xfs_iget_core from
* racing with us on linking the inode back with a vnode.
* Once we have the XFS_IRECLAIM flag set it will not touch
* us.
*/
write_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
if (__xfs_iflags_test(ip, XFS_IRECLAIM) ||
!__xfs_iflags_test(ip, XFS_IRECLAIMABLE)) {
spin_unlock(&ip->i_flags_lock);
write_unlock(&pag->pag_ici_lock);
if (locked) {
xfs_ifunlock(ip);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
}
return 1;
}
__xfs_iflags_set(ip, XFS_IRECLAIM);
spin_unlock(&ip->i_flags_lock);
write_unlock(&pag->pag_ici_lock);
xfs_put_perag(ip->i_mount, pag);
/*
* If the inode is still dirty, then flush it out. If the inode
* is not in the AIL, then it will be OK to flush it delwri as
* long as xfs_iflush() does not keep any references to the inode.
* We leave that decision up to xfs_iflush() since it has the
* knowledge of whether it's OK to simply do a delwri flush of
* the inode or whether we need to wait until the inode is
* pulled from the AIL.
* We get the flush lock regardless, though, just to make sure
* we don't free it while it is being flushed.
*/
if (!locked) {
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_iflock(ip);
}
/*
* In the case of a forced shutdown we rely on xfs_iflush() to
* wait for the inode to be unpinned before returning an error.
*/
if (!is_bad_inode(VFS_I(ip)) && xfs_iflush(ip, sync_mode) == 0) {
/* synchronize with xfs_iflush_done */
xfs_iflock(ip);
xfs_ifunlock(ip);
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_ireclaim(ip);
return 0;
}
/*
* We set the inode flag atomically with the radix tree tag.
* Once we get tag lookups on the radix tree, this inode flag
* can go away.
*/
void
xfs_inode_set_reclaim_tag(
xfs_inode_t *ip)
{
xfs_mount_t *mp = ip->i_mount;
xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
read_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
radix_tree_tag_set(&pag->pag_ici_root,
XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
__xfs_iflags_set(ip, XFS_IRECLAIMABLE);
spin_unlock(&ip->i_flags_lock);
read_unlock(&pag->pag_ici_lock);
xfs_put_perag(mp, pag);
}
void
__xfs_inode_clear_reclaim_tag(
xfs_mount_t *mp,
xfs_perag_t *pag,
xfs_inode_t *ip)
{
radix_tree_tag_clear(&pag->pag_ici_root,
XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
}
void
xfs_inode_clear_reclaim_tag(
xfs_inode_t *ip)
{
xfs_mount_t *mp = ip->i_mount;
xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
read_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
__xfs_inode_clear_reclaim_tag(mp, pag, ip);
spin_unlock(&ip->i_flags_lock);
read_unlock(&pag->pag_ici_lock);
xfs_put_perag(mp, pag);
}
STATIC void
xfs_reclaim_inodes_ag(
xfs_mount_t *mp,
int ag,
int noblock,
int mode)
{
xfs_inode_t *ip = NULL;
xfs_perag_t *pag = &mp->m_perag[ag];
int nr_found;
uint32_t first_index;
int skipped;
restart:
first_index = 0;
skipped = 0;
do {
/*
* use a gang lookup to find the next inode in the tree
* as the tree is sparse and a gang lookup walks to find
* the number of objects requested.
*/
read_lock(&pag->pag_ici_lock);
nr_found = radix_tree_gang_lookup_tag(&pag->pag_ici_root,
(void**)&ip, first_index, 1,
XFS_ICI_RECLAIM_TAG);
if (!nr_found) {
read_unlock(&pag->pag_ici_lock);
break;
}
/*
* Update the index for the next lookup. Catch overflows
* into the next AG range which can occur if we have inodes
* in the last block of the AG and we are currently
* pointing to the last inode.
*/
first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1);
if (first_index < XFS_INO_TO_AGINO(mp, ip->i_ino)) {
read_unlock(&pag->pag_ici_lock);
break;
}
ASSERT(xfs_iflags_test(ip, (XFS_IRECLAIMABLE|XFS_IRECLAIM)));
/* ignore if already under reclaim */
if (xfs_iflags_test(ip, XFS_IRECLAIM)) {
read_unlock(&pag->pag_ici_lock);
continue;
}
if (noblock) {
if (!xfs_ilock_nowait(ip, XFS_ILOCK_EXCL)) {
read_unlock(&pag->pag_ici_lock);
continue;
}
if (xfs_ipincount(ip) ||
!xfs_iflock_nowait(ip)) {
xfs_iunlock(ip, XFS_ILOCK_EXCL);
read_unlock(&pag->pag_ici_lock);
continue;
}
}
read_unlock(&pag->pag_ici_lock);
/*
* hmmm - this is an inode already in reclaim. Do
* we even bother catching it here?
*/
if (xfs_reclaim_inode(ip, noblock, mode))
skipped++;
} while (nr_found);
if (skipped) {
delay(1);
goto restart;
}
return;
}
int
xfs_reclaim_inodes(
xfs_mount_t *mp,
int noblock,
int mode)
{
int i;
for (i = 0; i < mp->m_sb.sb_agcount; i++) {
if (!mp->m_perag[i].pag_ici_init)
continue;
xfs_reclaim_inodes_ag(mp, i, noblock, mode);
}
return 0;
}

55
fs/xfs/linux-2.6/xfs_sync.h Normal file
Просмотреть файл

@ -0,0 +1,55 @@
/*
* Copyright (c) 2000-2006 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef XFS_SYNC_H
#define XFS_SYNC_H 1
struct xfs_mount;
typedef struct bhv_vfs_sync_work {
struct list_head w_list;
struct xfs_mount *w_mount;
void *w_data; /* syncer routine argument */
void (*w_syncer)(struct xfs_mount *, void *);
} bhv_vfs_sync_work_t;
#define SYNC_ATTR 0x0001 /* sync attributes */
#define SYNC_DELWRI 0x0002 /* look at delayed writes */
#define SYNC_WAIT 0x0004 /* wait for i/o to complete */
#define SYNC_BDFLUSH 0x0008 /* BDFLUSH is calling -- don't block */
#define SYNC_IOWAIT 0x0010 /* wait for all I/O to complete */
int xfs_syncd_init(struct xfs_mount *mp);
void xfs_syncd_stop(struct xfs_mount *mp);
int xfs_sync_inodes(struct xfs_mount *mp, int flags);
int xfs_sync_fsdata(struct xfs_mount *mp, int flags);
int xfs_quiesce_data(struct xfs_mount *mp);
void xfs_quiesce_attr(struct xfs_mount *mp);
void xfs_flush_inode(struct xfs_inode *ip);
void xfs_flush_device(struct xfs_inode *ip);
int xfs_reclaim_inode(struct xfs_inode *ip, int locked, int sync_mode);
int xfs_reclaim_inodes(struct xfs_mount *mp, int noblock, int mode);
void xfs_inode_set_reclaim_tag(struct xfs_inode *ip);
void xfs_inode_clear_reclaim_tag(struct xfs_inode *ip);
void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag,
struct xfs_inode *ip);
#endif

11
fs/xfs/linux-2.6/xfs_sysctl.c
Просмотреть файл

@ -55,17 +55,6 @@ xfs_stats_clear_proc_handler(
#endif /* CONFIG_PROC_FS */
static ctl_table xfs_table[] = {
{
.ctl_name = XFS_RESTRICT_CHOWN,
.procname = "restrict_chown",
.data = &xfs_params.restrict_chown.val,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xfs_params.restrict_chown.min,
.extra2 = &xfs_params.restrict_chown.max
},
{
.ctl_name = XFS_SGID_INHERIT,
.procname = "irix_sgid_inherit",

3
fs/xfs/linux-2.6/xfs_sysctl.h
Просмотреть файл

@ -31,7 +31,6 @@ typedef struct xfs_sysctl_val {
} xfs_sysctl_val_t;
typedef struct xfs_param {
xfs_sysctl_val_t restrict_chown;/* Root/non-root can give away files.*/
xfs_sysctl_val_t sgid_inherit; /* Inherit S_ISGID if process' GID is
* not a member of parent dir GID. */
xfs_sysctl_val_t symlink_mode; /* Link creat mode affected by umask */
@ -68,7 +67,7 @@ typedef struct xfs_param {
enum {
/* XFS_REFCACHE_SIZE = 1 */
/* XFS_REFCACHE_PURGE = 2 */
XFS_RESTRICT_CHOWN = 3,
/* XFS_RESTRICT_CHOWN = 3 */
XFS_SGID_INHERIT = 4,
XFS_SYMLINK_MODE = 5,
XFS_PANIC_MASK = 6,

31
fs/xfs/linux-2.6/xfs_vfs.h
Просмотреть файл

@ -33,37 +33,6 @@ struct xfs_mount_args;
typedef struct kstatfs bhv_statvfs_t;
typedef struct bhv_vfs_sync_work {
struct list_head w_list;
struct xfs_mount *w_mount;
void *w_data; /* syncer routine argument */
void (*w_syncer)(struct xfs_mount *, void *);
} bhv_vfs_sync_work_t;
#define SYNC_ATTR 0x0001 /* sync attributes */
#define SYNC_CLOSE 0x0002 /* close file system down */
#define SYNC_DELWRI 0x0004 /* look at delayed writes */
#define SYNC_WAIT 0x0008 /* wait for i/o to complete */
#define SYNC_BDFLUSH 0x0010 /* BDFLUSH is calling -- don't block */
#define SYNC_FSDATA 0x0020 /* flush fs data (e.g. superblocks) */
#define SYNC_REFCACHE 0x0040 /* prune some of the nfs ref cache */
#define SYNC_REMOUNT 0x0080 /* remount readonly, no dummy LRs */
#define SYNC_IOWAIT 0x0100 /* wait for all I/O to complete */
/*
* When remounting a filesystem read-only or freezing the filesystem,
* we have two phases to execute. This first phase is syncing the data
* before we quiesce the fielsystem, and the second is flushing all the
* inodes out after we've waited for all the transactions created by
* the first phase to complete. The second phase uses SYNC_INODE_QUIESCE
* to ensure that the inodes are written to their location on disk
* rather than just existing in transactions in the log. This means
* after a quiesce there is no log replay required to write the inodes
* to disk (this is the main difference between a sync and a quiesce).
*/
#define SYNC_DATA_QUIESCE (SYNC_DELWRI|SYNC_FSDATA|SYNC_WAIT|SYNC_IOWAIT)
#define SYNC_INODE_QUIESCE (SYNC_REMOUNT|SYNC_ATTR|SYNC_WAIT)
#define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
#define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */

15
fs/xfs/linux-2.6/xfs_vnode.c
Просмотреть файл

@ -84,25 +84,12 @@ vn_ioerror(
#ifdef XFS_INODE_TRACE
/*
* Reference count of Linux inode if present, -1 if the xfs_inode
* has no associated Linux inode.
*/
static inline int xfs_icount(struct xfs_inode *ip)
{
struct inode *vp = VFS_I(ip);
if (vp)
return vn_count(vp);
return -1;
}
#define KTRACE_ENTER(ip, vk, s, line, ra) \
ktrace_enter( (ip)->i_trace, \
/* 0 */ (void *)(__psint_t)(vk), \
/* 1 */ (void *)(s), \
/* 2 */ (void *)(__psint_t) line, \
/* 3 */ (void *)(__psint_t)xfs_icount(ip), \
/* 3 */ (void *)(__psint_t)atomic_read(&VFS_I(ip)->i_count), \
/* 4 */ (void *)(ra), \
/* 5 */ NULL, \
/* 6 */ (void *)(__psint_t)current_cpu(), \

5
fs/xfs/linux-2.6/xfs_vnode.h
Просмотреть файл

@ -80,11 +80,6 @@ do { \
iput(VFS_I(ip)); \
} while (0)
static inline struct inode *vn_grab(struct inode *vp)
{
return igrab(vp);
}
/*
* Dealing with bad inodes
*/

39
fs/xfs/quota/xfs_dquot.c
Просмотреть файл

@ -101,7 +101,7 @@ xfs_qm_dqinit(
if (brandnewdquot) {
dqp->dq_flnext = dqp->dq_flprev = dqp;
mutex_init(&dqp->q_qlock);
sv_init(&dqp->q_pinwait, SV_DEFAULT, "pdq");
init_waitqueue_head(&dqp->q_pinwait);
/*
* Because we want to use a counting completion, complete
@ -131,7 +131,7 @@ xfs_qm_dqinit(
dqp->q_res_bcount = 0;
dqp->q_res_icount = 0;
dqp->q_res_rtbcount = 0;
dqp->q_pincount = 0;
atomic_set(&dqp->q_pincount, 0);
dqp->q_hash = NULL;
ASSERT(dqp->dq_flnext == dqp->dq_flprev);
@ -1221,16 +1221,14 @@ xfs_qm_dqflush(
xfs_dqtrace_entry(dqp, "DQFLUSH");
/*
* If not dirty, nada.
* If not dirty, or it's pinned and we are not supposed to
* block, nada.
*/
if (!XFS_DQ_IS_DIRTY(dqp)) {
if (!XFS_DQ_IS_DIRTY(dqp) ||
(!(flags & XFS_QMOPT_SYNC) && atomic_read(&dqp->q_pincount) > 0)) {
xfs_dqfunlock(dqp);
return (0);
return 0;
}
/*
* Cant flush a pinned dquot. Wait for it.
*/
xfs_qm_dqunpin_wait(dqp);
/*
@ -1274,10 +1272,8 @@ xfs_qm_dqflush(
dqp->dq_flags &= ~(XFS_DQ_DIRTY);
mp = dqp->q_mount;
/* lsn is 64 bits */
spin_lock(&mp->m_ail_lock);
dqp->q_logitem.qli_flush_lsn = dqp->q_logitem.qli_item.li_lsn;
spin_unlock(&mp->m_ail_lock);
xfs_trans_ail_copy_lsn(mp->m_ail, &dqp->q_logitem.qli_flush_lsn,
&dqp->q_logitem.qli_item.li_lsn);
/*
* Attach an iodone routine so that we can remove this dquot from the
@ -1323,8 +1319,10 @@ xfs_qm_dqflush_done(
xfs_dq_logitem_t *qip)
{
xfs_dquot_t *dqp;
struct xfs_ail *ailp;
dqp = qip->qli_dquot;
ailp = qip->qli_item.li_ailp;
/*
* We only want to pull the item from the AIL if its
@ -1337,15 +1335,12 @@ xfs_qm_dqflush_done(
if ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&
qip->qli_item.li_lsn == qip->qli_flush_lsn) {
spin_lock(&dqp->q_mount->m_ail_lock);
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
/* xfs_trans_ail_delete() drops the AIL lock. */
spin_lock(&ailp->xa_lock);
if (qip->qli_item.li_lsn == qip->qli_flush_lsn)
xfs_trans_delete_ail(dqp->q_mount,
(xfs_log_item_t*)qip);
xfs_trans_ail_delete(ailp, (xfs_log_item_t*)qip);
else
spin_unlock(&dqp->q_mount->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
/*
@ -1375,7 +1370,7 @@ xfs_dqunlock(
mutex_unlock(&(dqp->q_qlock));
if (dqp->q_logitem.qli_dquot == dqp) {
/* Once was dqp->q_mount, but might just have been cleared */
xfs_trans_unlocked_item(dqp->q_logitem.qli_item.li_mountp,
xfs_trans_unlocked_item(dqp->q_logitem.qli_item.li_ailp,
(xfs_log_item_t*)&(dqp->q_logitem));
}
}
@ -1489,7 +1484,7 @@ xfs_qm_dqpurge(
"xfs_qm_dqpurge: dquot %p flush failed", dqp);
xfs_dqflock(dqp);
}
ASSERT(dqp->q_pincount == 0);
ASSERT(atomic_read(&dqp->q_pincount) == 0);
ASSERT(XFS_FORCED_SHUTDOWN(mp) ||
!(dqp->q_logitem.qli_item.li_flags & XFS_LI_IN_AIL));

4
fs/xfs/quota/xfs_dquot.h
Просмотреть файл

@ -83,8 +83,8 @@ typedef struct xfs_dquot {
xfs_qcnt_t q_res_rtbcount;/* total realtime blks used+reserved */
mutex_t q_qlock; /* quota lock */
struct completion q_flush; /* flush completion queue */
uint q_pincount; /* pin count for this dquot */
sv_t q_pinwait; /* sync var for pinning */
atomic_t q_pincount; /* dquot pin count */
wait_queue_head_t q_pinwait; /* dquot pinning wait queue */
#ifdef XFS_DQUOT_TRACE
struct ktrace *q_trace; /* trace header structure */
#endif

45
fs/xfs/quota/xfs_dquot_item.c
Просмотреть файл

@ -88,25 +88,22 @@ xfs_qm_dquot_logitem_format(
/*
* Increment the pin count of the given dquot.
* This value is protected by pinlock spinlock in the xQM structure.
*/
STATIC void
xfs_qm_dquot_logitem_pin(
xfs_dq_logitem_t *logitem)
{
xfs_dquot_t *dqp;
xfs_dquot_t *dqp = logitem->qli_dquot;
dqp = logitem->qli_dquot;
ASSERT(XFS_DQ_IS_LOCKED(dqp));
spin_lock(&(XFS_DQ_TO_QINF(dqp)->qi_pinlock));
dqp->q_pincount++;
spin_unlock(&(XFS_DQ_TO_QINF(dqp)->qi_pinlock));
atomic_inc(&dqp->q_pincount);
}
/*
* Decrement the pin count of the given dquot, and wake up
* anyone in xfs_dqwait_unpin() if the count goes to 0. The
* dquot must have been previously pinned with a call to xfs_dqpin().
* dquot must have been previously pinned with a call to
* xfs_qm_dquot_logitem_pin().
*/
/* ARGSUSED */
STATIC void
@ -114,16 +111,11 @@ xfs_qm_dquot_logitem_unpin(
xfs_dq_logitem_t *logitem,
int stale)
{
xfs_dquot_t *dqp;
xfs_dquot_t *dqp = logitem->qli_dquot;
dqp = logitem->qli_dquot;
ASSERT(dqp->q_pincount > 0);
spin_lock(&(XFS_DQ_TO_QINF(dqp)->qi_pinlock));
dqp->q_pincount--;
if (dqp->q_pincount == 0) {
sv_broadcast(&dqp->q_pinwait);
}
spin_unlock(&(XFS_DQ_TO_QINF(dqp)->qi_pinlock));
ASSERT(atomic_read(&dqp->q_pincount) > 0);
if (atomic_dec_and_test(&dqp->q_pincount))
wake_up(&dqp->q_pinwait);
}
/* ARGSUSED */
@ -193,21 +185,14 @@ xfs_qm_dqunpin_wait(
xfs_dquot_t *dqp)
{
ASSERT(XFS_DQ_IS_LOCKED(dqp));
if (dqp->q_pincount == 0) {
if (atomic_read(&dqp->q_pincount) == 0)
return;
}
/*
* Give the log a push so we don't wait here too long.
*/
xfs_log_force(dqp->q_mount, (xfs_lsn_t)0, XFS_LOG_FORCE);
spin_lock(&(XFS_DQ_TO_QINF(dqp)->qi_pinlock));
if (dqp->q_pincount == 0) {
spin_unlock(&(XFS_DQ_TO_QINF(dqp)->qi_pinlock));
return;
}
sv_wait(&(dqp->q_pinwait), PINOD,
&(XFS_DQ_TO_QINF(dqp)->qi_pinlock), s);
wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0));
}
/*
@ -310,7 +295,7 @@ xfs_qm_dquot_logitem_trylock(
uint retval;
dqp = qip->qli_dquot;
if (dqp->q_pincount > 0)
if (atomic_read(&dqp->q_pincount) > 0)
return (XFS_ITEM_PINNED);
if (! xfs_qm_dqlock_nowait(dqp))
@ -568,14 +553,16 @@ xfs_qm_qoffend_logitem_committed(
xfs_lsn_t lsn)
{
xfs_qoff_logitem_t *qfs;
struct xfs_ail *ailp;
qfs = qfe->qql_start_lip;
spin_lock(&qfs->qql_item.li_mountp->m_ail_lock);
ailp = qfs->qql_item.li_ailp;
spin_lock(&ailp->xa_lock);
/*
* Delete the qoff-start logitem from the AIL.
* xfs_trans_delete_ail() drops the AIL lock.
* xfs_trans_ail_delete() drops the AIL lock.
*/
xfs_trans_delete_ail(qfs->qql_item.li_mountp, (xfs_log_item_t *)qfs);
xfs_trans_ail_delete(ailp, (xfs_log_item_t *)qfs);
kmem_free(qfs);
kmem_free(qfe);
return (xfs_lsn_t)-1;

13
fs/xfs/quota/xfs_qm.c
Просмотреть файл

@ -20,7 +20,6 @@
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_clnt.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
@ -987,14 +986,10 @@ xfs_qm_dqdetach(
}
/*
* This is called by VFS_SYNC and flags arg determines the caller,
* and its motives, as done in xfs_sync.
*
* vfs_sync: SYNC_FSDATA|SYNC_ATTR|SYNC_BDFLUSH 0x31
* syscall sync: SYNC_FSDATA|SYNC_ATTR|SYNC_DELWRI 0x25
* umountroot : SYNC_WAIT | SYNC_CLOSE | SYNC_ATTR | SYNC_FSDATA
* This is called to sync quotas. We can be told to use non-blocking
* semantics by either the SYNC_BDFLUSH flag or the absence of the
* SYNC_WAIT flag.
*/
int
xfs_qm_sync(
xfs_mount_t *mp,
@ -1137,7 +1132,6 @@ xfs_qm_init_quotainfo(
return error;
}
spin_lock_init(&qinf->qi_pinlock);
xfs_qm_list_init(&qinf->qi_dqlist, "mpdqlist", 0);
qinf->qi_dqreclaims = 0;
@ -1234,7 +1228,6 @@ xfs_qm_destroy_quotainfo(
*/
xfs_qm_rele_quotafs_ref(mp);
spinlock_destroy(&qi->qi_pinlock);
xfs_qm_list_destroy(&qi->qi_dqlist);
if (qi->qi_uquotaip) {

1
fs/xfs/quota/xfs_qm.h
Просмотреть файл

@ -106,7 +106,6 @@ typedef struct xfs_qm {
typedef struct xfs_quotainfo {
xfs_inode_t *qi_uquotaip; /* user quota inode */
xfs_inode_t *qi_gquotaip; /* group quota inode */
spinlock_t qi_pinlock; /* dquot pinning lock */
xfs_dqlist_t qi_dqlist; /* all dquots in filesys */
int qi_dqreclaims; /* a change here indicates
a removal in the dqlist */

1
fs/xfs/quota/xfs_qm_bhv.c
Просмотреть файл

@ -20,7 +20,6 @@
#include "xfs_bit.h"
#include "xfs_log.h"
#include "xfs_inum.h"
#include "xfs_clnt.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_ag.h"

157
fs/xfs/quota/xfs_qm_syscalls.c
Просмотреть файл

@ -127,7 +127,7 @@ xfs_qm_quotactl(
break;
case Q_XQUOTASYNC:
return (xfs_sync_inodes(mp, SYNC_DELWRI, NULL));
return xfs_sync_inodes(mp, SYNC_DELWRI);
default:
break;
@ -1021,6 +1021,74 @@ xfs_qm_export_flags(
}
/*
* Release all the dquots on the inodes in an AG.
*/
STATIC void
xfs_qm_dqrele_inodes_ag(
xfs_mount_t *mp,
int ag,
uint flags)
{
xfs_inode_t *ip = NULL;
xfs_perag_t *pag = &mp->m_perag[ag];
int first_index = 0;
int nr_found;
do {
boolean_t inode_refed;
struct inode *inode;
/*
* use a gang lookup to find the next inode in the tree
* as the tree is sparse and a gang lookup walks to find
* the number of objects requested.
*/
read_lock(&pag->pag_ici_lock);
nr_found = radix_tree_gang_lookup(&pag->pag_ici_root,
(void**)&ip, first_index, 1);
if (!nr_found) {
read_unlock(&pag->pag_ici_lock);
break;
}
/* update the index for the next lookup */
first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1);
/* skip quota inodes and those in reclaim */
inode = VFS_I(ip);
if (!inode || ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) {
ASSERT(ip->i_udquot == NULL);
ASSERT(ip->i_gdquot == NULL);
read_unlock(&pag->pag_ici_lock);
continue;
}
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
inode = igrab(inode);
read_unlock(&pag->pag_ici_lock);
if (!inode)
continue;
inode_refed = B_TRUE;
xfs_ilock(ip, XFS_ILOCK_EXCL);
} else {
read_unlock(&pag->pag_ici_lock);
}
if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
xfs_qm_dqrele(ip->i_udquot);
ip->i_udquot = NULL;
}
if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) &&
ip->i_gdquot) {
xfs_qm_dqrele(ip->i_gdquot);
ip->i_gdquot = NULL;
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
if (inode_refed)
IRELE(ip);
} while (nr_found);
}
/*
* Go thru all the inodes in the file system, releasing their dquots.
* Note that the mount structure gets modified to indicate that quotas are off
@ -1032,91 +1100,14 @@ xfs_qm_dqrele_all_inodes(
struct xfs_mount *mp,
uint flags)
{
xfs_inode_t *ip, *topino;
uint ireclaims;
struct inode *vp;
boolean_t vnode_refd;
int i;
ASSERT(mp->m_quotainfo);
XFS_MOUNT_ILOCK(mp);
again:
ip = mp->m_inodes;
if (ip == NULL) {
XFS_MOUNT_IUNLOCK(mp);
return;
for (i = 0; i < mp->m_sb.sb_agcount; i++) {
if (!mp->m_perag[i].pag_ici_init)
continue;
xfs_qm_dqrele_inodes_ag(mp, i, flags);
}
do {
/* Skip markers inserted by xfs_sync */
if (ip->i_mount == NULL) {
ip = ip->i_mnext;
continue;
}
/* Root inode, rbmip and rsumip have associated blocks */
if (ip == XFS_QI_UQIP(mp) || ip == XFS_QI_GQIP(mp)) {
ASSERT(ip->i_udquot == NULL);
ASSERT(ip->i_gdquot == NULL);
ip = ip->i_mnext;
continue;
}
vp = VFS_I(ip);
if (!vp) {
ASSERT(ip->i_udquot == NULL);
ASSERT(ip->i_gdquot == NULL);
ip = ip->i_mnext;
continue;
}
vnode_refd = B_FALSE;
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
ireclaims = mp->m_ireclaims;
topino = mp->m_inodes;
vp = vn_grab(vp);
if (!vp)
goto again;
XFS_MOUNT_IUNLOCK(mp);
/* XXX restart limit ? */
xfs_ilock(ip, XFS_ILOCK_EXCL);
vnode_refd = B_TRUE;
} else {
ireclaims = mp->m_ireclaims;
topino = mp->m_inodes;
XFS_MOUNT_IUNLOCK(mp);
}
/*
* We don't keep the mountlock across the dqrele() call,
* since it can take a while..
*/
if ((flags & XFS_UQUOTA_ACCT) && ip->i_udquot) {
xfs_qm_dqrele(ip->i_udquot);
ip->i_udquot = NULL;
}
if (flags & (XFS_PQUOTA_ACCT|XFS_GQUOTA_ACCT) && ip->i_gdquot) {
xfs_qm_dqrele(ip->i_gdquot);
ip->i_gdquot = NULL;
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
/*
* Wait until we've dropped the ilock and mountlock to
* do the vn_rele. Or be condemned to an eternity in the
* inactive code in hell.
*/
if (vnode_refd)
IRELE(ip);
XFS_MOUNT_ILOCK(mp);
/*
* If an inode was inserted or removed, we gotta
* start over again.
*/
if (topino != mp->m_inodes || mp->m_ireclaims != ireclaims) {
/* XXX use a sentinel */
goto again;
}
ip = ip->i_mnext;
} while (ip != mp->m_inodes);
XFS_MOUNT_IUNLOCK(mp);
}
/*------------------------------------------------------------------------*/

2
fs/xfs/support/debug.c
Просмотреть файл

@ -84,5 +84,5 @@ assfail(char *expr, char *file, int line)
void
xfs_hex_dump(void *p, int length)
{
print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_OFFSET, 16, 1, p, length, 1);
print_hex_dump(KERN_ALERT, "", DUMP_PREFIX_ADDRESS, 16, 1, p, length, 1);
}

2
fs/xfs/xfs.h
Просмотреть файл

@ -30,7 +30,7 @@
#define XFS_ATTR_TRACE 1
#define XFS_BLI_TRACE 1
#define XFS_BMAP_TRACE 1
#define XFS_BMBT_TRACE 1
#define XFS_BTREE_TRACE 1
#define XFS_DIR2_TRACE 1
#define XFS_DQUOT_TRACE 1
#define XFS_ILOCK_TRACE 1

8
fs/xfs/xfs_acl.c
Просмотреть файл

@ -366,7 +366,7 @@ xfs_acl_allow_set(
return ENOTDIR;
if (vp->i_sb->s_flags & MS_RDONLY)
return EROFS;
if (XFS_I(vp)->i_d.di_uid != current->fsuid && !capable(CAP_FOWNER))
if (XFS_I(vp)->i_d.di_uid != current_fsuid() && !capable(CAP_FOWNER))
return EPERM;
return 0;
}
@ -413,13 +413,13 @@ xfs_acl_access(
switch (fap->acl_entry[i].ae_tag) {
case ACL_USER_OBJ:
seen_userobj = 1;
if (fuid != current->fsuid)
if (fuid != current_fsuid())
continue;
matched.ae_tag = ACL_USER_OBJ;
matched.ae_perm = allows;
break;
case ACL_USER:
if (fap->acl_entry[i].ae_id != current->fsuid)
if (fap->acl_entry[i].ae_id != current_fsuid())
continue;
matched.ae_tag = ACL_USER;
matched.ae_perm = allows;
@ -758,7 +758,7 @@ xfs_acl_setmode(
if (gap && nomask)
iattr.ia_mode |= gap->ae_perm << 3;
return xfs_setattr(XFS_I(vp), &iattr, 0, sys_cred);
return xfs_setattr(XFS_I(vp), &iattr, 0);
}
/*

10
fs/xfs/xfs_ag.h
Просмотреть файл

@ -192,17 +192,23 @@ typedef struct xfs_perag
xfs_agino_t pagi_freecount; /* number of free inodes */
xfs_agino_t pagi_count; /* number of allocated inodes */
int pagb_count; /* pagb slots in use */
xfs_perag_busy_t *pagb_list; /* unstable blocks */
#ifdef __KERNEL__
spinlock_t pagb_lock; /* lock for pagb_list */
#endif
xfs_perag_busy_t *pagb_list; /* unstable blocks */
atomic_t pagf_fstrms; /* # of filestreams active in this AG */
int pag_ici_init; /* incore inode cache initialised */
rwlock_t pag_ici_lock; /* incore inode lock */
struct radix_tree_root pag_ici_root; /* incore inode cache root */
#endif
} xfs_perag_t;
/*
* tags for inode radix tree
*/
#define XFS_ICI_RECLAIM_TAG 0 /* inode is to be reclaimed */
#define XFS_AG_MAXLEVELS(mp) ((mp)->m_ag_maxlevels)
#define XFS_MIN_FREELIST_RAW(bl,cl,mp) \
(MIN(bl + 1, XFS_AG_MAXLEVELS(mp)) + MIN(cl + 1, XFS_AG_MAXLEVELS(mp)))

195
fs/xfs/xfs_alloc.c
Просмотреть файл

@ -89,6 +89,92 @@ STATIC int xfs_alloc_ag_vextent_small(xfs_alloc_arg_t *,
* Internal functions.
*/
/*
* Lookup the record equal to [bno, len] in the btree given by cur.
*/
STATIC int /* error */
xfs_alloc_lookup_eq(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agblock_t bno, /* starting block of extent */
xfs_extlen_t len, /* length of extent */
int *stat) /* success/failure */
{
cur->bc_rec.a.ar_startblock = bno;
cur->bc_rec.a.ar_blockcount = len;
return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat);
}
/*
* Lookup the first record greater than or equal to [bno, len]
* in the btree given by cur.
*/
STATIC int /* error */
xfs_alloc_lookup_ge(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agblock_t bno, /* starting block of extent */
xfs_extlen_t len, /* length of extent */
int *stat) /* success/failure */
{
cur->bc_rec.a.ar_startblock = bno;
cur->bc_rec.a.ar_blockcount = len;
return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
}
/*
* Lookup the first record less than or equal to [bno, len]
* in the btree given by cur.
*/
STATIC int /* error */
xfs_alloc_lookup_le(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agblock_t bno, /* starting block of extent */
xfs_extlen_t len, /* length of extent */
int *stat) /* success/failure */
{
cur->bc_rec.a.ar_startblock = bno;
cur->bc_rec.a.ar_blockcount = len;
return xfs_btree_lookup(cur, XFS_LOOKUP_LE, stat);
}
/*
* Update the record referred to by cur to the value given
* by [bno, len].
* This either works (return 0) or gets an EFSCORRUPTED error.
*/
STATIC int /* error */
xfs_alloc_update(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agblock_t bno, /* starting block of extent */
xfs_extlen_t len) /* length of extent */
{
union xfs_btree_rec rec;
rec.alloc.ar_startblock = cpu_to_be32(bno);
rec.alloc.ar_blockcount = cpu_to_be32(len);
return xfs_btree_update(cur, &rec);
}
/*
* Get the data from the pointed-to record.
*/
STATIC int /* error */
xfs_alloc_get_rec(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agblock_t *bno, /* output: starting block of extent */
xfs_extlen_t *len, /* output: length of extent */
int *stat) /* output: success/failure */
{
union xfs_btree_rec *rec;
int error;
error = xfs_btree_get_rec(cur, &rec, stat);
if (!error && *stat == 1) {
*bno = be32_to_cpu(rec->alloc.ar_startblock);
*len = be32_to_cpu(rec->alloc.ar_blockcount);
}
return error;
}
/*
* Compute aligned version of the found extent.
* Takes alignment and min length into account.
@ -294,21 +380,20 @@ xfs_alloc_fixup_trees(
return error;
XFS_WANT_CORRUPTED_RETURN(i == 1);
}
#ifdef DEBUG
{
xfs_alloc_block_t *bnoblock;
xfs_alloc_block_t *cntblock;
if (bno_cur->bc_nlevels == 1 &&
cnt_cur->bc_nlevels == 1) {
bnoblock = XFS_BUF_TO_ALLOC_BLOCK(bno_cur->bc_bufs[0]);
cntblock = XFS_BUF_TO_ALLOC_BLOCK(cnt_cur->bc_bufs[0]);
XFS_WANT_CORRUPTED_RETURN(
be16_to_cpu(bnoblock->bb_numrecs) ==
be16_to_cpu(cntblock->bb_numrecs));
}
#ifdef DEBUG
if (bno_cur->bc_nlevels == 1 && cnt_cur->bc_nlevels == 1) {
struct xfs_btree_block *bnoblock;
struct xfs_btree_block *cntblock;
bnoblock = XFS_BUF_TO_BLOCK(bno_cur->bc_bufs[0]);
cntblock = XFS_BUF_TO_BLOCK(cnt_cur->bc_bufs[0]);
XFS_WANT_CORRUPTED_RETURN(
bnoblock->bb_numrecs == cntblock->bb_numrecs);
}
#endif
/*
* Deal with all four cases: the allocated record is contained
* within the freespace record, so we can have new freespace
@ -333,7 +418,7 @@ xfs_alloc_fixup_trees(
/*
* Delete the entry from the by-size btree.
*/
if ((error = xfs_alloc_delete(cnt_cur, &i)))
if ((error = xfs_btree_delete(cnt_cur, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 1);
/*
@ -343,7 +428,7 @@ xfs_alloc_fixup_trees(
if ((error = xfs_alloc_lookup_eq(cnt_cur, nfbno1, nflen1, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 0);
if ((error = xfs_alloc_insert(cnt_cur, &i)))
if ((error = xfs_btree_insert(cnt_cur, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 1);
}
@ -351,7 +436,7 @@ xfs_alloc_fixup_trees(
if ((error = xfs_alloc_lookup_eq(cnt_cur, nfbno2, nflen2, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 0);
if ((error = xfs_alloc_insert(cnt_cur, &i)))
if ((error = xfs_btree_insert(cnt_cur, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 1);
}
@ -362,7 +447,7 @@ xfs_alloc_fixup_trees(
/*
* No remaining freespace, just delete the by-block tree entry.
*/
if ((error = xfs_alloc_delete(bno_cur, &i)))
if ((error = xfs_btree_delete(bno_cur, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 1);
} else {
@ -379,7 +464,7 @@ xfs_alloc_fixup_trees(
if ((error = xfs_alloc_lookup_eq(bno_cur, nfbno2, nflen2, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 0);
if ((error = xfs_alloc_insert(bno_cur, &i)))
if ((error = xfs_btree_insert(bno_cur, &i)))
return error;
XFS_WANT_CORRUPTED_RETURN(i == 1);
}
@ -640,8 +725,8 @@ xfs_alloc_ag_vextent_exact(
/*
* Allocate/initialize a cursor for the by-number freespace btree.
*/
bno_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_BNO, NULL, 0);
bno_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_BNO);
/*
* Lookup bno and minlen in the btree (minlen is irrelevant, really).
* Look for the closest free block <= bno, it must contain bno
@ -696,8 +781,8 @@ xfs_alloc_ag_vextent_exact(
* We are allocating agbno for rlen [agbno .. end]
* Allocate/initialize a cursor for the by-size btree.
*/
cnt_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_CNT, NULL, 0);
cnt_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_CNT);
ASSERT(args->agbno + args->len <=
be32_to_cpu(XFS_BUF_TO_AGF(args->agbp)->agf_length));
if ((error = xfs_alloc_fixup_trees(cnt_cur, bno_cur, fbno, flen,
@ -759,8 +844,8 @@ xfs_alloc_ag_vextent_near(
/*
* Get a cursor for the by-size btree.
*/
cnt_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_CNT, NULL, 0);
cnt_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_CNT);
ltlen = 0;
bno_cur_lt = bno_cur_gt = NULL;
/*
@ -818,7 +903,7 @@ xfs_alloc_ag_vextent_near(
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
if (ltlen >= args->minlen)
break;
if ((error = xfs_alloc_increment(cnt_cur, 0, &i)))
if ((error = xfs_btree_increment(cnt_cur, 0, &i)))
goto error0;
} while (i);
ASSERT(ltlen >= args->minlen);
@ -828,7 +913,7 @@ xfs_alloc_ag_vextent_near(
i = cnt_cur->bc_ptrs[0];
for (j = 1, blen = 0, bdiff = 0;
!error && j && (blen < args->maxlen || bdiff > 0);
error = xfs_alloc_increment(cnt_cur, 0, &j)) {
error = xfs_btree_increment(cnt_cur, 0, &j)) {
/*
* For each entry, decide if it's better than
* the previous best entry.
@ -886,8 +971,8 @@ xfs_alloc_ag_vextent_near(
/*
* Set up a cursor for the by-bno tree.
*/
bno_cur_lt = xfs_btree_init_cursor(args->mp, args->tp,
args->agbp, args->agno, XFS_BTNUM_BNO, NULL, 0);
bno_cur_lt = xfs_allocbt_init_cursor(args->mp, args->tp,
args->agbp, args->agno, XFS_BTNUM_BNO);
/*
* Fix up the btree entries.
*/
@ -914,8 +999,8 @@ xfs_alloc_ag_vextent_near(
/*
* Allocate and initialize the cursor for the leftward search.
*/
bno_cur_lt = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_BNO, NULL, 0);
bno_cur_lt = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_BNO);
/*
* Lookup <= bno to find the leftward search's starting point.
*/
@ -938,7 +1023,7 @@ xfs_alloc_ag_vextent_near(
* Increment the cursor, so we will point at the entry just right
* of the leftward entry if any, or to the leftmost entry.
*/
if ((error = xfs_alloc_increment(bno_cur_gt, 0, &i)))
if ((error = xfs_btree_increment(bno_cur_gt, 0, &i)))
goto error0;
if (!i) {
/*
@ -961,7 +1046,7 @@ xfs_alloc_ag_vextent_near(
args->minlen, &ltbnoa, &ltlena);
if (ltlena >= args->minlen)
break;
if ((error = xfs_alloc_decrement(bno_cur_lt, 0, &i)))
if ((error = xfs_btree_decrement(bno_cur_lt, 0, &i)))
goto error0;
if (!i) {
xfs_btree_del_cursor(bno_cur_lt,
@ -977,7 +1062,7 @@ xfs_alloc_ag_vextent_near(
args->minlen, &gtbnoa, &gtlena);
if (gtlena >= args->minlen)
break;
if ((error = xfs_alloc_increment(bno_cur_gt, 0, &i)))
if ((error = xfs_btree_increment(bno_cur_gt, 0, &i)))
goto error0;
if (!i) {
xfs_btree_del_cursor(bno_cur_gt,
@ -1066,7 +1151,7 @@ xfs_alloc_ag_vextent_near(
/*
* Fell off the right end.
*/
if ((error = xfs_alloc_increment(
if ((error = xfs_btree_increment(
bno_cur_gt, 0, &i)))
goto error0;
if (!i) {
@ -1162,7 +1247,7 @@ xfs_alloc_ag_vextent_near(
/*
* Fell off the left end.
*/
if ((error = xfs_alloc_decrement(
if ((error = xfs_btree_decrement(
bno_cur_lt, 0, &i)))
goto error0;
if (!i) {
@ -1267,8 +1352,8 @@ xfs_alloc_ag_vextent_size(
/*
* Allocate and initialize a cursor for the by-size btree.
*/
cnt_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_CNT, NULL, 0);
cnt_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_CNT);
bno_cur = NULL;
/*
* Look for an entry >= maxlen+alignment-1 blocks.
@ -1321,7 +1406,7 @@ xfs_alloc_ag_vextent_size(
bestflen = flen;
bestfbno = fbno;
for (;;) {
if ((error = xfs_alloc_decrement(cnt_cur, 0, &i)))
if ((error = xfs_btree_decrement(cnt_cur, 0, &i)))
goto error0;
if (i == 0)
break;
@ -1372,8 +1457,8 @@ xfs_alloc_ag_vextent_size(
/*
* Allocate and initialize a cursor for the by-block tree.
*/
bno_cur = xfs_btree_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_BNO, NULL, 0);
bno_cur = xfs_allocbt_init_cursor(args->mp, args->tp, args->agbp,
args->agno, XFS_BTNUM_BNO);
if ((error = xfs_alloc_fixup_trees(cnt_cur, bno_cur, fbno, flen,
rbno, rlen, XFSA_FIXUP_CNT_OK)))
goto error0;
@ -1416,7 +1501,7 @@ xfs_alloc_ag_vextent_small(
xfs_extlen_t flen;
int i;
if ((error = xfs_alloc_decrement(ccur, 0, &i)))
if ((error = xfs_btree_decrement(ccur, 0, &i)))
goto error0;
if (i) {
if ((error = xfs_alloc_get_rec(ccur, &fbno, &flen, &i)))
@ -1515,8 +1600,7 @@ xfs_free_ag_extent(
/*
* Allocate and initialize a cursor for the by-block btree.
*/
bno_cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_BNO, NULL,
0);
bno_cur = xfs_allocbt_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_BNO);
cnt_cur = NULL;
/*
* Look for a neighboring block on the left (lower block numbers)
@ -1549,7 +1633,7 @@ xfs_free_ag_extent(
* Look for a neighboring block on the right (higher block numbers)
* that is contiguous with this space.
*/
if ((error = xfs_alloc_increment(bno_cur, 0, &haveright)))
if ((error = xfs_btree_increment(bno_cur, 0, &haveright)))
goto error0;
if (haveright) {
/*
@ -1575,8 +1659,7 @@ xfs_free_ag_extent(
/*
* Now allocate and initialize a cursor for the by-size tree.
*/
cnt_cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_CNT, NULL,
0);
cnt_cur = xfs_allocbt_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_CNT);
/*
* Have both left and right contiguous neighbors.
* Merge all three into a single free block.
@ -1588,7 +1671,7 @@ xfs_free_ag_extent(
if ((error = xfs_alloc_lookup_eq(cnt_cur, ltbno, ltlen, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
if ((error = xfs_alloc_delete(cnt_cur, &i)))
if ((error = xfs_btree_delete(cnt_cur, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
/*
@ -1597,19 +1680,19 @@ xfs_free_ag_extent(
if ((error = xfs_alloc_lookup_eq(cnt_cur, gtbno, gtlen, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
if ((error = xfs_alloc_delete(cnt_cur, &i)))
if ((error = xfs_btree_delete(cnt_cur, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
/*
* Delete the old by-block entry for the right block.
*/
if ((error = xfs_alloc_delete(bno_cur, &i)))
if ((error = xfs_btree_delete(bno_cur, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
/*
* Move the by-block cursor back to the left neighbor.
*/
if ((error = xfs_alloc_decrement(bno_cur, 0, &i)))
if ((error = xfs_btree_decrement(bno_cur, 0, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
#ifdef DEBUG
@ -1648,14 +1731,14 @@ xfs_free_ag_extent(
if ((error = xfs_alloc_lookup_eq(cnt_cur, ltbno, ltlen, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
if ((error = xfs_alloc_delete(cnt_cur, &i)))
if ((error = xfs_btree_delete(cnt_cur, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
/*
* Back up the by-block cursor to the left neighbor, and
* update its length.
*/
if ((error = xfs_alloc_decrement(bno_cur, 0, &i)))
if ((error = xfs_btree_decrement(bno_cur, 0, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
nbno = ltbno;
@ -1674,7 +1757,7 @@ xfs_free_ag_extent(
if ((error = xfs_alloc_lookup_eq(cnt_cur, gtbno, gtlen, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
if ((error = xfs_alloc_delete(cnt_cur, &i)))
if ((error = xfs_btree_delete(cnt_cur, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
/*
@ -1693,7 +1776,7 @@ xfs_free_ag_extent(
else {
nbno = bno;
nlen = len;
if ((error = xfs_alloc_insert(bno_cur, &i)))
if ((error = xfs_btree_insert(bno_cur, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
}
@ -1705,7 +1788,7 @@ xfs_free_ag_extent(
if ((error = xfs_alloc_lookup_eq(cnt_cur, nbno, nlen, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 0, error0);
if ((error = xfs_alloc_insert(cnt_cur, &i)))
if ((error = xfs_btree_insert(cnt_cur, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
xfs_btree_del_cursor(cnt_cur, XFS_BTREE_NOERROR);
@ -2188,6 +2271,9 @@ xfs_alloc_read_agf(
be32_to_cpu(agf->agf_flfirst) < XFS_AGFL_SIZE(mp) &&
be32_to_cpu(agf->agf_fllast) < XFS_AGFL_SIZE(mp) &&
be32_to_cpu(agf->agf_flcount) <= XFS_AGFL_SIZE(mp);
if (xfs_sb_version_haslazysbcount(&mp->m_sb))
agf_ok = agf_ok && be32_to_cpu(agf->agf_btreeblks) <=
be32_to_cpu(agf->agf_length);
if (unlikely(XFS_TEST_ERROR(!agf_ok, mp, XFS_ERRTAG_ALLOC_READ_AGF,
XFS_RANDOM_ALLOC_READ_AGF))) {
XFS_CORRUPTION_ERROR("xfs_alloc_read_agf",
@ -2213,6 +2299,7 @@ xfs_alloc_read_agf(
#ifdef DEBUG
else if (!XFS_FORCED_SHUTDOWN(mp)) {
ASSERT(pag->pagf_freeblks == be32_to_cpu(agf->agf_freeblks));
ASSERT(pag->pagf_btreeblks == be32_to_cpu(agf->agf_btreeblks));
ASSERT(pag->pagf_flcount == be32_to_cpu(agf->agf_flcount));
ASSERT(pag->pagf_longest == be32_to_cpu(agf->agf_longest));
ASSERT(pag->pagf_levels[XFS_BTNUM_BNOi] ==

27
fs/xfs/xfs_alloc.h
Просмотреть файл

@ -121,6 +121,19 @@ extern ktrace_t *xfs_alloc_trace_buf;
#define XFS_ALLOC_KTRACE_BUSYSEARCH 6
#endif
void
xfs_alloc_mark_busy(xfs_trans_t *tp,
xfs_agnumber_t agno,
xfs_agblock_t bno,
xfs_extlen_t len);
void
xfs_alloc_clear_busy(xfs_trans_t *tp,
xfs_agnumber_t ag,
int idx);
#endif /* __KERNEL__ */
/*
* Compute and fill in value of m_ag_maxlevels.
*/
@ -196,18 +209,4 @@ xfs_free_extent(
xfs_fsblock_t bno, /* starting block number of extent */
xfs_extlen_t len); /* length of extent */
void
xfs_alloc_mark_busy(xfs_trans_t *tp,
xfs_agnumber_t agno,
xfs_agblock_t bno,
xfs_extlen_t len);
void
xfs_alloc_clear_busy(xfs_trans_t *tp,
xfs_agnumber_t ag,
int idx);
#endif /* __KERNEL__ */
#endif /* __XFS_ALLOC_H__ */

2431
fs/xfs/xfs_alloc_btree.c
Просмотреть файл

Разница между файлами не показана из-за своего большого размера Загрузить разницу

103
fs/xfs/xfs_alloc_btree.h
Просмотреть файл

@ -24,7 +24,6 @@
struct xfs_buf;
struct xfs_btree_cur;
struct xfs_btree_sblock;
struct xfs_mount;
/*
@ -50,16 +49,6 @@ typedef struct xfs_alloc_rec_incore {
/* btree pointer type */
typedef __be32 xfs_alloc_ptr_t;
/* btree block header type */
typedef struct xfs_btree_sblock xfs_alloc_block_t;
#define XFS_BUF_TO_ALLOC_BLOCK(bp) ((xfs_alloc_block_t *)XFS_BUF_PTR(bp))
/*
* Real block structures have a size equal to the disk block size.
*/
#define XFS_ALLOC_BLOCK_MAXRECS(lev,cur) ((cur)->bc_mp->m_alloc_mxr[lev != 0])
#define XFS_ALLOC_BLOCK_MINRECS(lev,cur) ((cur)->bc_mp->m_alloc_mnr[lev != 0])
/*
* Minimum and maximum blocksize and sectorsize.
@ -82,74 +71,40 @@ typedef struct xfs_btree_sblock xfs_alloc_block_t;
#define XFS_BNO_BLOCK(mp) ((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))
#define XFS_CNT_BLOCK(mp) ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
/*
* Btree block header size depends on a superblock flag.
*
* (not quite yet, but soon)
*/
#define XFS_ALLOC_BLOCK_LEN(mp) XFS_BTREE_SBLOCK_LEN
/*
* Record, key, and pointer address macros for btree blocks.
*
* (note that some of these may appear unused, but they are used in userspace)
*/
#define XFS_ALLOC_REC_ADDR(bb,i,cur) \
XFS_BTREE_REC_ADDR(xfs_alloc, bb, i)
#define XFS_ALLOC_REC_ADDR(mp, block, index) \
((xfs_alloc_rec_t *) \
((char *)(block) + \
XFS_ALLOC_BLOCK_LEN(mp) + \
(((index) - 1) * sizeof(xfs_alloc_rec_t))))
#define XFS_ALLOC_KEY_ADDR(bb,i,cur) \
XFS_BTREE_KEY_ADDR(xfs_alloc, bb, i)
#define XFS_ALLOC_KEY_ADDR(mp, block, index) \
((xfs_alloc_key_t *) \
((char *)(block) + \
XFS_ALLOC_BLOCK_LEN(mp) + \
((index) - 1) * sizeof(xfs_alloc_key_t)))
#define XFS_ALLOC_PTR_ADDR(bb,i,cur) \
XFS_BTREE_PTR_ADDR(xfs_alloc, bb, i, XFS_ALLOC_BLOCK_MAXRECS(1, cur))
#define XFS_ALLOC_PTR_ADDR(mp, block, index, maxrecs) \
((xfs_alloc_ptr_t *) \
((char *)(block) + \
XFS_ALLOC_BLOCK_LEN(mp) + \
(maxrecs) * sizeof(xfs_alloc_key_t) + \
((index) - 1) * sizeof(xfs_alloc_ptr_t)))
/*
* Decrement cursor by one record at the level.
* For nonzero levels the leaf-ward information is untouched.
*/
extern int xfs_alloc_decrement(struct xfs_btree_cur *cur, int level, int *stat);
/*
* Delete the record pointed to by cur.
* The cursor refers to the place where the record was (could be inserted)
* when the operation returns.
*/
extern int xfs_alloc_delete(struct xfs_btree_cur *cur, int *stat);
/*
* Get the data from the pointed-to record.
*/
extern int xfs_alloc_get_rec(struct xfs_btree_cur *cur, xfs_agblock_t *bno,
xfs_extlen_t *len, int *stat);
/*
* Increment cursor by one record at the level.
* For nonzero levels the leaf-ward information is untouched.
*/
extern int xfs_alloc_increment(struct xfs_btree_cur *cur, int level, int *stat);
/*
* Insert the current record at the point referenced by cur.
* The cursor may be inconsistent on return if splits have been done.
*/
extern int xfs_alloc_insert(struct xfs_btree_cur *cur, int *stat);
/*
* Lookup the record equal to [bno, len] in the btree given by cur.
*/
extern int xfs_alloc_lookup_eq(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len, int *stat);
/*
* Lookup the first record greater than or equal to [bno, len]
* in the btree given by cur.
*/
extern int xfs_alloc_lookup_ge(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len, int *stat);
/*
* Lookup the first record less than or equal to [bno, len]
* in the btree given by cur.
*/
extern int xfs_alloc_lookup_le(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len, int *stat);
/*
* Update the record referred to by cur, to the value given by [bno, len].
* This either works (return 0) or gets an EFSCORRUPTED error.
*/
extern int xfs_alloc_update(struct xfs_btree_cur *cur, xfs_agblock_t bno,
xfs_extlen_t len);
extern struct xfs_btree_cur *xfs_allocbt_init_cursor(struct xfs_mount *,
struct xfs_trans *, struct xfs_buf *,
xfs_agnumber_t, xfs_btnum_t);
extern int xfs_allocbt_maxrecs(struct xfs_mount *, int, int);
#endif /* __XFS_ALLOC_BTREE_H__ */

39
fs/xfs/xfs_arch.h
Просмотреть файл

@ -41,21 +41,36 @@
#endif
#ifdef XFS_NATIVE_HOST
#define cpu_to_be16(val) ((__be16)(val))
#define cpu_to_be32(val) ((__be32)(val))
#define cpu_to_be64(val) ((__be64)(val))
#define be16_to_cpu(val) ((__uint16_t)(val))
#define be32_to_cpu(val) ((__uint32_t)(val))
#define be64_to_cpu(val) ((__uint64_t)(val))
#define cpu_to_be16(val) ((__force __be16)(__u16)(val))
#define cpu_to_be32(val) ((__force __be32)(__u32)(val))
#define cpu_to_be64(val) ((__force __be64)(__u64)(val))
#define be16_to_cpu(val) ((__force __u16)(__be16)(val))
#define be32_to_cpu(val) ((__force __u32)(__be32)(val))
#define be64_to_cpu(val) ((__force __u64)(__be64)(val))
#else
#define cpu_to_be16(val) (__swab16((__uint16_t)(val)))
#define cpu_to_be32(val) (__swab32((__uint32_t)(val)))
#define cpu_to_be64(val) (__swab64((__uint64_t)(val)))
#define be16_to_cpu(val) (__swab16((__be16)(val)))
#define be32_to_cpu(val) (__swab32((__be32)(val)))
#define be64_to_cpu(val) (__swab64((__be64)(val)))
#define cpu_to_be16(val) ((__force __be16)__swab16((__u16)(val)))
#define cpu_to_be32(val) ((__force __be32)__swab32((__u32)(val)))
#define cpu_to_be64(val) ((__force __be64)__swab64((__u64)(val)))
#define be16_to_cpu(val) (__swab16((__force __u16)(__be16)(val)))
#define be32_to_cpu(val) (__swab32((__force __u32)(__be32)(val)))
#define be64_to_cpu(val) (__swab64((__force __u64)(__be64)(val)))
#endif
static inline void be16_add_cpu(__be16 *a, __s16 b)
{
*a = cpu_to_be16(be16_to_cpu(*a) + b);
}
static inline void be32_add_cpu(__be32 *a, __s32 b)
{
*a = cpu_to_be32(be32_to_cpu(*a) + b);
}
static inline void be64_add_cpu(__be64 *a, __s64 b)
{
*a = cpu_to_be64(be64_to_cpu(*a) + b);
}
#endif /* __KERNEL__ */
/* do we need conversion? */

3
fs/xfs/xfs_bit.h
Просмотреть файл

@ -61,8 +61,7 @@ static inline int xfs_highbit64(__uint64_t v)
/* Get low bit set out of 32-bit argument, -1 if none set */
static inline int xfs_lowbit32(__uint32_t v)
{
unsigned long t = v;
return (v) ? find_first_bit(&t, 32) : -1;
return ffs(v) - 1;
}
/* Get low bit set out of 64-bit argument, -1 if none set */

296
fs/xfs/xfs_bmap.c
Просмотреть файл

@ -393,8 +393,8 @@ xfs_bmap_count_leaves(
STATIC void
xfs_bmap_disk_count_leaves(
xfs_extnum_t idx,
xfs_bmbt_block_t *block,
struct xfs_mount *mp,
struct xfs_btree_block *block,
int numrecs,
int *count);
@ -402,6 +402,53 @@ xfs_bmap_disk_count_leaves(
* Bmap internal routines.
*/
STATIC int /* error */
xfs_bmbt_lookup_eq(
struct xfs_btree_cur *cur,
xfs_fileoff_t off,
xfs_fsblock_t bno,
xfs_filblks_t len,
int *stat) /* success/failure */
{
cur->bc_rec.b.br_startoff = off;
cur->bc_rec.b.br_startblock = bno;
cur->bc_rec.b.br_blockcount = len;
return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat);
}
STATIC int /* error */
xfs_bmbt_lookup_ge(
struct xfs_btree_cur *cur,
xfs_fileoff_t off,
xfs_fsblock_t bno,
xfs_filblks_t len,
int *stat) /* success/failure */
{
cur->bc_rec.b.br_startoff = off;
cur->bc_rec.b.br_startblock = bno;
cur->bc_rec.b.br_blockcount = len;
return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
}
/*
* Update the record referred to by cur to the value given
* by [off, bno, len, state].
* This either works (return 0) or gets an EFSCORRUPTED error.
*/
STATIC int
xfs_bmbt_update(
struct xfs_btree_cur *cur,
xfs_fileoff_t off,
xfs_fsblock_t bno,
xfs_filblks_t len,
xfs_exntst_t state)
{
union xfs_btree_rec rec;
xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state);
return xfs_btree_update(cur, &rec);
}
/*
* Called from xfs_bmap_add_attrfork to handle btree format files.
*/
@ -422,15 +469,14 @@ xfs_bmap_add_attrfork_btree(
if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip))
*flags |= XFS_ILOG_DBROOT;
else {
cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip,
XFS_DATA_FORK);
cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK);
cur->bc_private.b.flist = flist;
cur->bc_private.b.firstblock = *firstblock;
if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat)))
goto error0;
/* must be at least one entry */
XFS_WANT_CORRUPTED_GOTO(stat == 1, error0);
if ((error = xfs_bmbt_newroot(cur, flags, &stat)))
if ((error = xfs_btree_new_iroot(cur, flags, &stat)))
goto error0;
if (stat == 0) {
xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
@ -818,10 +864,10 @@ xfs_bmap_add_extent_delay_real(
RIGHT.br_blockcount, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_delete(cur, &i)))
if ((error = xfs_btree_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_decrement(cur, 0, &i)))
if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
@ -931,7 +977,7 @@ xfs_bmap_add_extent_delay_real(
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 0, done);
cur->bc_rec.b.br_state = XFS_EXT_NORM;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -1007,7 +1053,7 @@ xfs_bmap_add_extent_delay_real(
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 0, done);
cur->bc_rec.b.br_state = XFS_EXT_NORM;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -1097,7 +1143,7 @@ xfs_bmap_add_extent_delay_real(
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 0, done);
cur->bc_rec.b.br_state = XFS_EXT_NORM;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -1152,7 +1198,7 @@ xfs_bmap_add_extent_delay_real(
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 0, done);
cur->bc_rec.b.br_state = XFS_EXT_NORM;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -1379,16 +1425,16 @@ xfs_bmap_add_extent_unwritten_real(
RIGHT.br_blockcount, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_delete(cur, &i)))
if ((error = xfs_btree_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_decrement(cur, 0, &i)))
if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_delete(cur, &i)))
if ((error = xfs_btree_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_decrement(cur, 0, &i)))
if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
@ -1428,10 +1474,10 @@ xfs_bmap_add_extent_unwritten_real(
&i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_delete(cur, &i)))
if ((error = xfs_btree_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_decrement(cur, 0, &i)))
if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, LEFT.br_startoff,
@ -1471,10 +1517,10 @@ xfs_bmap_add_extent_unwritten_real(
RIGHT.br_blockcount, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_delete(cur, &i)))
if ((error = xfs_btree_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_decrement(cur, 0, &i)))
if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, new->br_startoff,
@ -1557,7 +1603,7 @@ xfs_bmap_add_extent_unwritten_real(
PREV.br_blockcount - new->br_blockcount,
oldext)))
goto done;
if ((error = xfs_bmbt_decrement(cur, 0, &i)))
if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
if (xfs_bmbt_update(cur, LEFT.br_startoff,
LEFT.br_startblock,
@ -1605,7 +1651,7 @@ xfs_bmap_add_extent_unwritten_real(
oldext)))
goto done;
cur->bc_rec.b = *new;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -1647,7 +1693,7 @@ xfs_bmap_add_extent_unwritten_real(
PREV.br_blockcount - new->br_blockcount,
oldext)))
goto done;
if ((error = xfs_bmbt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto done;
if ((error = xfs_bmbt_update(cur, new->br_startoff,
new->br_startblock,
@ -1695,7 +1741,7 @@ xfs_bmap_add_extent_unwritten_real(
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 0, done);
cur->bc_rec.b.br_state = XFS_EXT_NORM;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -1743,7 +1789,7 @@ xfs_bmap_add_extent_unwritten_real(
cur->bc_rec.b = PREV;
cur->bc_rec.b.br_blockcount =
new->br_startoff - PREV.br_startoff;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
/*
@ -1758,7 +1804,7 @@ xfs_bmap_add_extent_unwritten_real(
XFS_WANT_CORRUPTED_GOTO(i == 0, done);
/* new middle extent - newext */
cur->bc_rec.b.br_state = new->br_state;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -2106,10 +2152,10 @@ xfs_bmap_add_extent_hole_real(
right.br_blockcount, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_delete(cur, &i)))
if ((error = xfs_btree_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_decrement(cur, 0, &i)))
if ((error = xfs_btree_decrement(cur, 0, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
if ((error = xfs_bmbt_update(cur, left.br_startoff,
@ -2218,7 +2264,7 @@ xfs_bmap_add_extent_hole_real(
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 0, done);
cur->bc_rec.b.br_state = new->br_state;
if ((error = xfs_bmbt_insert(cur, &i)))
if ((error = xfs_btree_insert(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
}
@ -2996,24 +3042,24 @@ xfs_bmap_btree_to_extents(
int whichfork) /* data or attr fork */
{
/* REFERENCED */
xfs_bmbt_block_t *cblock;/* child btree block */
struct xfs_btree_block *cblock;/* child btree block */
xfs_fsblock_t cbno; /* child block number */
xfs_buf_t *cbp; /* child block's buffer */
int error; /* error return value */
xfs_ifork_t *ifp; /* inode fork data */
xfs_mount_t *mp; /* mount point structure */
__be64 *pp; /* ptr to block address */
xfs_bmbt_block_t *rblock;/* root btree block */
struct xfs_btree_block *rblock;/* root btree block */
mp = ip->i_mount;
ifp = XFS_IFORK_PTR(ip, whichfork);
ASSERT(ifp->if_flags & XFS_IFEXTENTS);
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE);
rblock = ifp->if_broot;
ASSERT(be16_to_cpu(rblock->bb_level) == 1);
ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1);
ASSERT(XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes) == 1);
mp = ip->i_mount;
pp = XFS_BMAP_BROOT_PTR_ADDR(rblock, 1, ifp->if_broot_bytes);
ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0) == 1);
pp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, ifp->if_broot_bytes);
cbno = be64_to_cpu(*pp);
*logflagsp = 0;
#ifdef DEBUG
@ -3023,8 +3069,8 @@ xfs_bmap_btree_to_extents(
if ((error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp,
XFS_BMAP_BTREE_REF)))
return error;
cblock = XFS_BUF_TO_BMBT_BLOCK(cbp);
if ((error = xfs_btree_check_lblock(cur, cblock, 0, cbp)))
cblock = XFS_BUF_TO_BLOCK(cbp);
if ((error = xfs_btree_check_block(cur, cblock, 0, cbp)))
return error;
xfs_bmap_add_free(cbno, 1, cur->bc_private.b.flist, mp);
ip->i_d.di_nblocks--;
@ -3170,7 +3216,7 @@ xfs_bmap_del_extent(
flags |= XFS_ILOG_FEXT(whichfork);
break;
}
if ((error = xfs_bmbt_delete(cur, &i)))
if ((error = xfs_btree_delete(cur, &i)))
goto done;
XFS_WANT_CORRUPTED_GOTO(i == 1, done);
break;
@ -3254,10 +3300,10 @@ xfs_bmap_del_extent(
got.br_startblock, temp,
got.br_state)))
goto done;
if ((error = xfs_bmbt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto done;
cur->bc_rec.b = new;
error = xfs_bmbt_insert(cur, &i);
error = xfs_btree_insert(cur, &i);
if (error && error != ENOSPC)
goto done;
/*
@ -3404,11 +3450,11 @@ xfs_bmap_extents_to_btree(
int *logflagsp, /* inode logging flags */
int whichfork) /* data or attr fork */
{
xfs_bmbt_block_t *ablock; /* allocated (child) bt block */
struct xfs_btree_block *ablock; /* allocated (child) bt block */
xfs_buf_t *abp; /* buffer for ablock */
xfs_alloc_arg_t args; /* allocation arguments */
xfs_bmbt_rec_t *arp; /* child record pointer */
xfs_bmbt_block_t *block; /* btree root block */
struct xfs_btree_block *block; /* btree root block */
xfs_btree_cur_t *cur; /* bmap btree cursor */
xfs_bmbt_rec_host_t *ep; /* extent record pointer */
int error; /* error return value */
@ -3428,6 +3474,7 @@ xfs_bmap_extents_to_btree(
*/
xfs_iroot_realloc(ip, 1, whichfork);
ifp->if_flags |= XFS_IFBROOT;
/*
* Fill in the root.
*/
@ -3435,14 +3482,14 @@ xfs_bmap_extents_to_btree(
block->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
block->bb_level = cpu_to_be16(1);
block->bb_numrecs = cpu_to_be16(1);
block->bb_leftsib = cpu_to_be64(NULLDFSBNO);
block->bb_rightsib = cpu_to_be64(NULLDFSBNO);
block->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
block->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
/*
* Need a cursor. Can't allocate until bb_level is filled in.
*/
mp = ip->i_mount;
cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip,
whichfork);
cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
cur->bc_private.b.firstblock = *firstblock;
cur->bc_private.b.flist = flist;
cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0;
@ -3489,12 +3536,12 @@ xfs_bmap_extents_to_btree(
/*
* Fill in the child block.
*/
ablock = XFS_BUF_TO_BMBT_BLOCK(abp);
ablock = XFS_BUF_TO_BLOCK(abp);
ablock->bb_magic = cpu_to_be32(XFS_BMAP_MAGIC);
ablock->bb_level = 0;
ablock->bb_leftsib = cpu_to_be64(NULLDFSBNO);
ablock->bb_rightsib = cpu_to_be64(NULLDFSBNO);
arp = XFS_BMAP_REC_IADDR(ablock, 1, cur);
ablock->bb_u.l.bb_leftsib = cpu_to_be64(NULLDFSBNO);
ablock->bb_u.l.bb_rightsib = cpu_to_be64(NULLDFSBNO);
arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
nextents = ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t);
for (cnt = i = 0; i < nextents; i++) {
ep = xfs_iext_get_ext(ifp, i);
@ -3505,21 +3552,24 @@ xfs_bmap_extents_to_btree(
}
}
ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork));
ablock->bb_numrecs = cpu_to_be16(cnt);
xfs_btree_set_numrecs(ablock, cnt);
/*
* Fill in the root key and pointer.
*/
kp = XFS_BMAP_KEY_IADDR(block, 1, cur);
arp = XFS_BMAP_REC_IADDR(ablock, 1, cur);
kp = XFS_BMBT_KEY_ADDR(mp, block, 1);
arp = XFS_BMBT_REC_ADDR(mp, ablock, 1);
kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp));
pp = XFS_BMAP_PTR_IADDR(block, 1, cur);
pp = XFS_BMBT_PTR_ADDR(mp, block, 1, xfs_bmbt_get_maxrecs(cur,
be16_to_cpu(block->bb_level)));
*pp = cpu_to_be64(args.fsbno);
/*
* Do all this logging at the end so that
* the root is at the right level.
*/
xfs_bmbt_log_block(cur, abp, XFS_BB_ALL_BITS);
xfs_bmbt_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs));
xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS);
xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs));
ASSERT(*curp == NULL);
*curp = cur;
*logflagsp = XFS_ILOG_CORE | XFS_ILOG_FBROOT(whichfork);
@ -4176,7 +4226,7 @@ xfs_bmap_compute_maxlevels(
maxleafents = MAXAEXTNUM;
sz = XFS_BMDR_SPACE_CALC(MINABTPTRS);
}
maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0);
maxrootrecs = xfs_bmdr_maxrecs(mp, sz, 0);
minleafrecs = mp->m_bmap_dmnr[0];
minnoderecs = mp->m_bmap_dmnr[1];
maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs;
@ -4474,6 +4524,22 @@ xfs_bmap_one_block(
return rval;
}
STATIC int
xfs_bmap_sanity_check(
struct xfs_mount *mp,
struct xfs_buf *bp,
int level)
{
struct xfs_btree_block *block = XFS_BUF_TO_BLOCK(bp);
if (be32_to_cpu(block->bb_magic) != XFS_BMAP_MAGIC ||
be16_to_cpu(block->bb_level) != level ||
be16_to_cpu(block->bb_numrecs) == 0 ||
be16_to_cpu(block->bb_numrecs) > mp->m_bmap_dmxr[level != 0])
return 0;
return 1;
}
/*
* Read in the extents to if_extents.
* All inode fields are set up by caller, we just traverse the btree
@ -4486,7 +4552,7 @@ xfs_bmap_read_extents(
xfs_inode_t *ip, /* incore inode */
int whichfork) /* data or attr fork */
{
xfs_bmbt_block_t *block; /* current btree block */
struct xfs_btree_block *block; /* current btree block */
xfs_fsblock_t bno; /* block # of "block" */
xfs_buf_t *bp; /* buffer for "block" */
int error; /* error return value */
@ -4510,7 +4576,7 @@ xfs_bmap_read_extents(
*/
level = be16_to_cpu(block->bb_level);
ASSERT(level > 0);
pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes);
pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
bno = be64_to_cpu(*pp);
ASSERT(bno != NULLDFSBNO);
ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
@ -4523,13 +4589,13 @@ xfs_bmap_read_extents(
if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
XFS_BMAP_BTREE_REF)))
return error;
block = XFS_BUF_TO_BMBT_BLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
XFS_WANT_CORRUPTED_GOTO(
XFS_BMAP_SANITY_CHECK(mp, block, level),
xfs_bmap_sanity_check(mp, bp, level),
error0);
if (level == 0)
break;
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]);
pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
bno = be64_to_cpu(*pp);
XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0);
xfs_trans_brelse(tp, bp);
@ -4549,7 +4615,7 @@ xfs_bmap_read_extents(
xfs_extnum_t start;
num_recs = be16_to_cpu(block->bb_numrecs);
num_recs = xfs_btree_get_numrecs(block);
if (unlikely(i + num_recs > room)) {
ASSERT(i + num_recs <= room);
xfs_fs_repair_cmn_err(CE_WARN, ip->i_mount,
@ -4561,18 +4627,18 @@ xfs_bmap_read_extents(
goto error0;
}
XFS_WANT_CORRUPTED_GOTO(
XFS_BMAP_SANITY_CHECK(mp, block, 0),
xfs_bmap_sanity_check(mp, bp, 0),
error0);
/*
* Read-ahead the next leaf block, if any.
*/
nextbno = be64_to_cpu(block->bb_rightsib);
nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
if (nextbno != NULLFSBLOCK)
xfs_btree_reada_bufl(mp, nextbno, 1);
/*
* Copy records into the extent records.
*/
frp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, 1);
frp = XFS_BMBT_REC_ADDR(mp, block, 1);
start = i;
for (j = 0; j < num_recs; j++, i++, frp++) {
xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i);
@ -4603,7 +4669,7 @@ xfs_bmap_read_extents(
if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp,
XFS_BMAP_BTREE_REF)))
return error;
block = XFS_BUF_TO_BMBT_BLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
}
ASSERT(i == (ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)));
ASSERT(i == XFS_IFORK_NEXTENTS(ip, whichfork));
@ -5029,8 +5095,7 @@ xfs_bmapi(
if (abno == NULLFSBLOCK)
break;
if ((ifp->if_flags & XFS_IFBROOT) && !cur) {
cur = xfs_btree_init_cursor(mp,
tp, NULL, 0, XFS_BTNUM_BMAP,
cur = xfs_bmbt_init_cursor(mp, tp,
ip, whichfork);
cur->bc_private.b.firstblock =
*firstblock;
@ -5147,9 +5212,8 @@ xfs_bmapi(
*/
ASSERT(mval->br_blockcount <= len);
if ((ifp->if_flags & XFS_IFBROOT) && !cur) {
cur = xfs_btree_init_cursor(mp,
tp, NULL, 0, XFS_BTNUM_BMAP,
ip, whichfork);
cur = xfs_bmbt_init_cursor(mp,
tp, ip, whichfork);
cur->bc_private.b.firstblock =
*firstblock;
cur->bc_private.b.flist = flist;
@ -5440,8 +5504,7 @@ xfs_bunmapi(
logflags = 0;
if (ifp->if_flags & XFS_IFBROOT) {
ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE);
cur = xfs_btree_init_cursor(mp, tp, NULL, 0, XFS_BTNUM_BMAP, ip,
whichfork);
cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork);
cur->bc_private.b.firstblock = *firstblock;
cur->bc_private.b.flist = flist;
cur->bc_private.b.flags = 0;
@ -6131,7 +6194,7 @@ xfs_bmap_get_bp(
void
xfs_check_block(
xfs_bmbt_block_t *block,
struct xfs_btree_block *block,
xfs_mount_t *mp,
int root,
short sz)
@ -6143,36 +6206,29 @@ xfs_check_block(
ASSERT(be16_to_cpu(block->bb_level) > 0);
prevp = NULL;
for( i = 1; i <= be16_to_cpu(block->bb_numrecs); i++) {
for( i = 1; i <= xfs_btree_get_numrecs(block); i++) {
dmxr = mp->m_bmap_dmxr[0];
if (root) {
keyp = XFS_BMAP_BROOT_KEY_ADDR(block, i, sz);
} else {
keyp = XFS_BTREE_KEY_ADDR(xfs_bmbt, block, i);
}
keyp = XFS_BMBT_KEY_ADDR(mp, block, i);
if (prevp) {
xfs_btree_check_key(XFS_BTNUM_BMAP, prevp, keyp);
ASSERT(be64_to_cpu(prevp->br_startoff) <
be64_to_cpu(keyp->br_startoff));
}
prevp = keyp;
/*
* Compare the block numbers to see if there are dups.
*/
if (root)
pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, i, sz);
else
pp = XFS_BMBT_PTR_ADDR(mp, block, i, dmxr);
if (root) {
pp = XFS_BMAP_BROOT_PTR_ADDR(block, i, sz);
} else {
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, i, dmxr);
}
for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) {
if (root) {
thispa = XFS_BMAP_BROOT_PTR_ADDR(block, j, sz);
} else {
thispa = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, j,
dmxr);
}
if (root)
thispa = XFS_BMAP_BROOT_PTR_ADDR(mp, block, j, sz);
else
thispa = XFS_BMBT_PTR_ADDR(mp, block, j, dmxr);
if (*thispa == *pp) {
cmn_err(CE_WARN, "%s: thispa(%d) == pp(%d) %Ld",
__func__, j, i,
@ -6195,7 +6251,7 @@ xfs_bmap_check_leaf_extents(
xfs_inode_t *ip, /* incore inode pointer */
int whichfork) /* data or attr fork */
{
xfs_bmbt_block_t *block; /* current btree block */
struct xfs_btree_block *block; /* current btree block */
xfs_fsblock_t bno; /* block # of "block" */
xfs_buf_t *bp; /* buffer for "block" */
int error; /* error return value */
@ -6223,7 +6279,7 @@ xfs_bmap_check_leaf_extents(
level = be16_to_cpu(block->bb_level);
ASSERT(level > 0);
xfs_check_block(block, mp, 1, ifp->if_broot_bytes);
pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes);
pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
bno = be64_to_cpu(*pp);
ASSERT(bno != NULLDFSBNO);
@ -6245,9 +6301,9 @@ xfs_bmap_check_leaf_extents(
if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
XFS_BMAP_BTREE_REF)))
goto error_norelse;
block = XFS_BUF_TO_BMBT_BLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
XFS_WANT_CORRUPTED_GOTO(
XFS_BMAP_SANITY_CHECK(mp, block, level),
xfs_bmap_sanity_check(mp, bp, level),
error0);
if (level == 0)
break;
@ -6258,7 +6314,7 @@ xfs_bmap_check_leaf_extents(
*/
xfs_check_block(block, mp, 0, 0);
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]);
pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
bno = be64_to_cpu(*pp);
XFS_WANT_CORRUPTED_GOTO(XFS_FSB_SANITY_CHECK(mp, bno), error0);
if (bp_release) {
@ -6280,13 +6336,13 @@ xfs_bmap_check_leaf_extents(
xfs_extnum_t num_recs;
num_recs = be16_to_cpu(block->bb_numrecs);
num_recs = xfs_btree_get_numrecs(block);
/*
* Read-ahead the next leaf block, if any.
*/
nextbno = be64_to_cpu(block->bb_rightsib);
nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
/*
* Check all the extents to make sure they are OK.
@ -6294,13 +6350,17 @@ xfs_bmap_check_leaf_extents(
* conform with the first entry in this one.
*/
ep = XFS_BTREE_REC_ADDR(xfs_bmbt, block, 1);
ep = XFS_BMBT_REC_ADDR(mp, block, 1);
if (i) {
xfs_btree_check_rec(XFS_BTNUM_BMAP, &last, ep);
ASSERT(xfs_bmbt_disk_get_startoff(&last) +
xfs_bmbt_disk_get_blockcount(&last) <=
xfs_bmbt_disk_get_startoff(ep));
}
for (j = 1; j < num_recs; j++) {
nextp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, j + 1);
xfs_btree_check_rec(XFS_BTNUM_BMAP, ep, nextp);
nextp = XFS_BMBT_REC_ADDR(mp, block, j + 1);
ASSERT(xfs_bmbt_disk_get_startoff(ep) +
xfs_bmbt_disk_get_blockcount(ep) <=
xfs_bmbt_disk_get_startoff(nextp));
ep = nextp;
}
@ -6326,7 +6386,7 @@ xfs_bmap_check_leaf_extents(
if (!bp && (error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp,
XFS_BMAP_BTREE_REF)))
goto error_norelse;
block = XFS_BUF_TO_BMBT_BLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
}
if (bp_release) {
bp_release = 0;
@ -6356,7 +6416,7 @@ xfs_bmap_count_blocks(
int whichfork, /* data or attr fork */
int *count) /* out: count of blocks */
{
xfs_bmbt_block_t *block; /* current btree block */
struct xfs_btree_block *block; /* current btree block */
xfs_fsblock_t bno; /* block # of "block" */
xfs_ifork_t *ifp; /* fork structure */
int level; /* btree level, for checking */
@ -6379,7 +6439,7 @@ xfs_bmap_count_blocks(
block = ifp->if_broot;
level = be16_to_cpu(block->bb_level);
ASSERT(level > 0);
pp = XFS_BMAP_BROOT_PTR_ADDR(block, 1, ifp->if_broot_bytes);
pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes);
bno = be64_to_cpu(*pp);
ASSERT(bno != NULLDFSBNO);
ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount);
@ -6413,29 +6473,29 @@ xfs_bmap_count_tree(
__be64 *pp;
xfs_fsblock_t bno = blockno;
xfs_fsblock_t nextbno;
xfs_bmbt_block_t *block, *nextblock;
struct xfs_btree_block *block, *nextblock;
int numrecs;
if ((error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, XFS_BMAP_BTREE_REF)))
return error;
*count += 1;
block = XFS_BUF_TO_BMBT_BLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
if (--level) {
/* Not at node above leafs, count this level of nodes */
nextbno = be64_to_cpu(block->bb_rightsib);
nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
while (nextbno != NULLFSBLOCK) {
if ((error = xfs_btree_read_bufl(mp, tp, nextbno,
0, &nbp, XFS_BMAP_BTREE_REF)))
return error;
*count += 1;
nextblock = XFS_BUF_TO_BMBT_BLOCK(nbp);
nextbno = be64_to_cpu(nextblock->bb_rightsib);
nextblock = XFS_BUF_TO_BLOCK(nbp);
nextbno = be64_to_cpu(nextblock->bb_u.l.bb_rightsib);
xfs_trans_brelse(tp, nbp);
}
/* Dive to the next level */
pp = XFS_BTREE_PTR_ADDR(xfs_bmbt, block, 1, mp->m_bmap_dmxr[1]);
pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]);
bno = be64_to_cpu(*pp);
if (unlikely((error =
xfs_bmap_count_tree(mp, tp, ifp, bno, level, count)) < 0)) {
@ -6448,9 +6508,9 @@ xfs_bmap_count_tree(
} else {
/* count all level 1 nodes and their leaves */
for (;;) {
nextbno = be64_to_cpu(block->bb_rightsib);
nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib);
numrecs = be16_to_cpu(block->bb_numrecs);
xfs_bmap_disk_count_leaves(0, block, numrecs, count);
xfs_bmap_disk_count_leaves(mp, block, numrecs, count);
xfs_trans_brelse(tp, bp);
if (nextbno == NULLFSBLOCK)
break;
@ -6459,7 +6519,7 @@ xfs_bmap_count_tree(
XFS_BMAP_BTREE_REF)))
return error;
*count += 1;
block = XFS_BUF_TO_BMBT_BLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
}
}
return 0;
@ -6489,8 +6549,8 @@ xfs_bmap_count_leaves(
*/
STATIC void
xfs_bmap_disk_count_leaves(
xfs_extnum_t idx,
xfs_bmbt_block_t *block,
struct xfs_mount *mp,
struct xfs_btree_block *block,
int numrecs,
int *count)
{
@ -6498,7 +6558,7 @@ xfs_bmap_disk_count_leaves(
xfs_bmbt_rec_t *frp;
for (b = 1; b <= numrecs; b++) {
frp = XFS_BTREE_REC_ADDR(xfs_bmbt, block, idx + b);
frp = XFS_BMBT_REC_ADDR(mp, block, b);
*count += xfs_bmbt_disk_get_blockcount(frp);
}
}

61
fs/xfs/xfs_bmap.h
Просмотреть файл

@ -137,9 +137,7 @@ typedef struct xfs_bmalloca {
char conv; /* overwriting unwritten extents */
} xfs_bmalloca_t;
#ifdef __KERNEL__
#if defined(XFS_BMAP_TRACE)
#if defined(__KERNEL__) && defined(XFS_BMAP_TRACE)
/*
* Trace operations for bmap extent tracing
*/
@ -163,9 +161,12 @@ xfs_bmap_trace_exlist(
int whichfork); /* data or attr fork */
#define XFS_BMAP_TRACE_EXLIST(ip,c,w) \
xfs_bmap_trace_exlist(__func__,ip,c,w)
#else
#else /* __KERNEL__ && XFS_BMAP_TRACE */
#define XFS_BMAP_TRACE_EXLIST(ip,c,w)
#endif
#endif /* __KERNEL__ && XFS_BMAP_TRACE */
/*
* Convert inode from non-attributed to attributed.
@ -205,20 +206,6 @@ xfs_bmap_compute_maxlevels(
struct xfs_mount *mp, /* file system mount structure */
int whichfork); /* data or attr fork */
/*
* Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi
* caller. Frees all the extents that need freeing, which must be done
* last due to locking considerations.
*
* Return 1 if the given transaction was committed and a new one allocated,
* and 0 otherwise.
*/
int /* error */
xfs_bmap_finish(
struct xfs_trans **tp, /* transaction pointer addr */
xfs_bmap_free_t *flist, /* i/o: list extents to free */
int *committed); /* xact committed or not */
/*
* Returns the file-relative block number of the first unused block in the file.
* This is the lowest-address hole if the file has holes, else the first block
@ -343,6 +330,32 @@ xfs_bunmapi(
extents */
int *done); /* set if not done yet */
/*
* Check an extent list, which has just been read, for
* any bit in the extent flag field.
*/
int
xfs_check_nostate_extents(
struct xfs_ifork *ifp,
xfs_extnum_t idx,
xfs_extnum_t num);
#ifdef __KERNEL__
/*
* Routine to be called at transaction's end by xfs_bmapi, xfs_bunmapi
* caller. Frees all the extents that need freeing, which must be done
* last due to locking considerations.
*
* Return 1 if the given transaction was committed and a new one allocated,
* and 0 otherwise.
*/
int /* error */
xfs_bmap_finish(
struct xfs_trans **tp, /* transaction pointer addr */
xfs_bmap_free_t *flist, /* i/o: list extents to free */
int *committed); /* xact committed or not */
/*
* Fcntl interface to xfs_bmapi.
*/
@ -374,16 +387,6 @@ xfs_bmap_count_blocks(
int whichfork,
int *count);
/*
* Check an extent list, which has just been read, for
* any bit in the extent flag field.
*/
int
xfs_check_nostate_extents(
struct xfs_ifork *ifp,
xfs_extnum_t idx,
xfs_extnum_t num);
/*
* Search the extent records for the entry containing block bno.
* If bno lies in a hole, point to the next entry. If bno lies

2614
fs/xfs/xfs_bmap_btree.c
Просмотреть файл

Разница между файлами не показана из-за своего большого размера Загрузить разницу

159
fs/xfs/xfs_bmap_btree.h
Просмотреть файл

@ -21,9 +21,10 @@
#define XFS_BMAP_MAGIC 0x424d4150 /* 'BMAP' */
struct xfs_btree_cur;
struct xfs_btree_lblock;
struct xfs_btree_block;
struct xfs_mount;
struct xfs_inode;
struct xfs_trans;
/*
* Bmap root header, on-disk form only.
@ -145,71 +146,60 @@ typedef struct xfs_bmbt_key {
/* btree pointer type */
typedef __be64 xfs_bmbt_ptr_t, xfs_bmdr_ptr_t;
/* btree block header type */
typedef struct xfs_btree_lblock xfs_bmbt_block_t;
/*
* Btree block header size depends on a superblock flag.
*
* (not quite yet, but soon)
*/
#define XFS_BMBT_BLOCK_LEN(mp) XFS_BTREE_LBLOCK_LEN
#define XFS_BUF_TO_BMBT_BLOCK(bp) ((xfs_bmbt_block_t *)XFS_BUF_PTR(bp))
#define XFS_BMBT_REC_ADDR(mp, block, index) \
((xfs_bmbt_rec_t *) \
((char *)(block) + \
XFS_BMBT_BLOCK_LEN(mp) + \
((index) - 1) * sizeof(xfs_bmbt_rec_t)))
#define XFS_BMAP_RBLOCK_DSIZE(lev,cur) ((cur)->bc_private.b.forksize)
#define XFS_BMAP_RBLOCK_ISIZE(lev,cur) \
((int)XFS_IFORK_PTR((cur)->bc_private.b.ip, \
(cur)->bc_private.b.whichfork)->if_broot_bytes)
#define XFS_BMBT_KEY_ADDR(mp, block, index) \
((xfs_bmbt_key_t *) \
((char *)(block) + \
XFS_BMBT_BLOCK_LEN(mp) + \
((index) - 1) * sizeof(xfs_bmbt_key_t)))
#define XFS_BMAP_BLOCK_DMAXRECS(lev,cur) \
(((lev) == (cur)->bc_nlevels - 1 ? \
XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur), \
xfs_bmdr, (lev) == 0) : \
((cur)->bc_mp->m_bmap_dmxr[(lev) != 0])))
#define XFS_BMAP_BLOCK_IMAXRECS(lev,cur) \
(((lev) == (cur)->bc_nlevels - 1 ? \
XFS_BTREE_BLOCK_MAXRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur),\
xfs_bmbt, (lev) == 0) : \
((cur)->bc_mp->m_bmap_dmxr[(lev) != 0])))
#define XFS_BMBT_PTR_ADDR(mp, block, index, maxrecs) \
((xfs_bmbt_ptr_t *) \
((char *)(block) + \
XFS_BMBT_BLOCK_LEN(mp) + \
(maxrecs) * sizeof(xfs_bmbt_key_t) + \
((index) - 1) * sizeof(xfs_bmbt_ptr_t)))
#define XFS_BMAP_BLOCK_DMINRECS(lev,cur) \
(((lev) == (cur)->bc_nlevels - 1 ? \
XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_DSIZE(lev,cur),\
xfs_bmdr, (lev) == 0) : \
((cur)->bc_mp->m_bmap_dmnr[(lev) != 0])))
#define XFS_BMAP_BLOCK_IMINRECS(lev,cur) \
(((lev) == (cur)->bc_nlevels - 1 ? \
XFS_BTREE_BLOCK_MINRECS(XFS_BMAP_RBLOCK_ISIZE(lev,cur),\
xfs_bmbt, (lev) == 0) : \
((cur)->bc_mp->m_bmap_dmnr[(lev) != 0])))
#define XFS_BMDR_REC_ADDR(block, index) \
((xfs_bmdr_rec_t *) \
((char *)(block) + \
sizeof(struct xfs_bmdr_block) + \
((index) - 1) * sizeof(xfs_bmdr_rec_t)))
#define XFS_BMAP_REC_DADDR(bb,i,cur) (XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i))
#define XFS_BMDR_KEY_ADDR(block, index) \
((xfs_bmdr_key_t *) \
((char *)(block) + \
sizeof(struct xfs_bmdr_block) + \
((index) - 1) * sizeof(xfs_bmdr_key_t)))
#define XFS_BMAP_REC_IADDR(bb,i,cur) (XFS_BTREE_REC_ADDR(xfs_bmbt, bb, i))
#define XFS_BMAP_KEY_DADDR(bb,i,cur) \
(XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i))
#define XFS_BMAP_KEY_IADDR(bb,i,cur) \
(XFS_BTREE_KEY_ADDR(xfs_bmbt, bb, i))
#define XFS_BMAP_PTR_DADDR(bb,i,cur) \
(XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, XFS_BMAP_BLOCK_DMAXRECS( \
be16_to_cpu((bb)->bb_level), cur)))
#define XFS_BMAP_PTR_IADDR(bb,i,cur) \
(XFS_BTREE_PTR_ADDR(xfs_bmbt, bb, i, XFS_BMAP_BLOCK_IMAXRECS( \
be16_to_cpu((bb)->bb_level), cur)))
#define XFS_BMDR_PTR_ADDR(block, index, maxrecs) \
((xfs_bmdr_ptr_t *) \
((char *)(block) + \
sizeof(struct xfs_bmdr_block) + \
(maxrecs) * sizeof(xfs_bmdr_key_t) + \
((index) - 1) * sizeof(xfs_bmdr_ptr_t)))
/*
* These are to be used when we know the size of the block and
* we don't have a cursor.
*/
#define XFS_BMAP_BROOT_REC_ADDR(bb,i,sz) \
(XFS_BTREE_REC_ADDR(xfs_bmbt,bb,i))
#define XFS_BMAP_BROOT_KEY_ADDR(bb,i,sz) \
(XFS_BTREE_KEY_ADDR(xfs_bmbt,bb,i))
#define XFS_BMAP_BROOT_PTR_ADDR(bb,i,sz) \
(XFS_BTREE_PTR_ADDR(xfs_bmbt,bb,i,XFS_BMAP_BROOT_MAXRECS(sz)))
#define XFS_BMAP_BROOT_NUMRECS(bb) be16_to_cpu((bb)->bb_numrecs)
#define XFS_BMAP_BROOT_MAXRECS(sz) XFS_BTREE_BLOCK_MAXRECS(sz,xfs_bmbt,0)
#define XFS_BMAP_BROOT_PTR_ADDR(mp, bb, i, sz) \
XFS_BMBT_PTR_ADDR(mp, bb, i, xfs_bmbt_maxrecs(mp, sz, 0))
#define XFS_BMAP_BROOT_SPACE_CALC(nrecs) \
(int)(sizeof(xfs_bmbt_block_t) + \
(int)(XFS_BTREE_LBLOCK_LEN + \
((nrecs) * (sizeof(xfs_bmbt_key_t) + sizeof(xfs_bmbt_ptr_t))))
#define XFS_BMAP_BROOT_SPACE(bb) \
@ -223,42 +213,12 @@ typedef struct xfs_btree_lblock xfs_bmbt_block_t;
*/
#define XFS_BM_MAXLEVELS(mp,w) ((mp)->m_bm_maxlevels[(w)])
#define XFS_BMAP_SANITY_CHECK(mp,bb,level) \
(be32_to_cpu((bb)->bb_magic) == XFS_BMAP_MAGIC && \
be16_to_cpu((bb)->bb_level) == level && \
be16_to_cpu((bb)->bb_numrecs) > 0 && \
be16_to_cpu((bb)->bb_numrecs) <= (mp)->m_bmap_dmxr[(level) != 0])
#ifdef __KERNEL__
#if defined(XFS_BMBT_TRACE)
/*
* Trace buffer entry types.
*/
#define XFS_BMBT_KTRACE_ARGBI 1
#define XFS_BMBT_KTRACE_ARGBII 2
#define XFS_BMBT_KTRACE_ARGFFFI 3
#define XFS_BMBT_KTRACE_ARGI 4
#define XFS_BMBT_KTRACE_ARGIFK 5
#define XFS_BMBT_KTRACE_ARGIFR 6
#define XFS_BMBT_KTRACE_ARGIK 7
#define XFS_BMBT_KTRACE_CUR 8
#define XFS_BMBT_TRACE_SIZE 4096 /* size of global trace buffer */
#define XFS_BMBT_KTRACE_SIZE 32 /* size of per-inode trace buffer */
extern ktrace_t *xfs_bmbt_trace_buf;
#endif
/*
* Prototypes for xfs_bmap.c to call.
*/
extern void xfs_bmdr_to_bmbt(xfs_bmdr_block_t *, int, xfs_bmbt_block_t *, int);
extern int xfs_bmbt_decrement(struct xfs_btree_cur *, int, int *);
extern int xfs_bmbt_delete(struct xfs_btree_cur *, int *);
extern void xfs_bmdr_to_bmbt(struct xfs_mount *, xfs_bmdr_block_t *, int,
struct xfs_btree_block *, int);
extern void xfs_bmbt_get_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s);
extern xfs_bmbt_block_t *xfs_bmbt_get_block(struct xfs_btree_cur *cur,
int, struct xfs_buf **bpp);
extern xfs_filblks_t xfs_bmbt_get_blockcount(xfs_bmbt_rec_host_t *r);
extern xfs_fsblock_t xfs_bmbt_get_startblock(xfs_bmbt_rec_host_t *r);
extern xfs_fileoff_t xfs_bmbt_get_startoff(xfs_bmbt_rec_host_t *r);
@ -268,22 +228,6 @@ extern void xfs_bmbt_disk_get_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
extern xfs_filblks_t xfs_bmbt_disk_get_blockcount(xfs_bmbt_rec_t *r);
extern xfs_fileoff_t xfs_bmbt_disk_get_startoff(xfs_bmbt_rec_t *r);
extern int xfs_bmbt_increment(struct xfs_btree_cur *, int, int *);
extern int xfs_bmbt_insert(struct xfs_btree_cur *, int *);
extern void xfs_bmbt_log_block(struct xfs_btree_cur *, struct xfs_buf *, int);
extern void xfs_bmbt_log_recs(struct xfs_btree_cur *, struct xfs_buf *, int,
int);
extern int xfs_bmbt_lookup_eq(struct xfs_btree_cur *, xfs_fileoff_t,
xfs_fsblock_t, xfs_filblks_t, int *);
extern int xfs_bmbt_lookup_ge(struct xfs_btree_cur *, xfs_fileoff_t,
xfs_fsblock_t, xfs_filblks_t, int *);
/*
* Give the bmap btree a new root block. Copy the old broot contents
* down into a real block and make the broot point to it.
*/
extern int xfs_bmbt_newroot(struct xfs_btree_cur *cur, int *lflags, int *stat);
extern void xfs_bmbt_set_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s);
extern void xfs_bmbt_set_allf(xfs_bmbt_rec_host_t *r, xfs_fileoff_t o,
xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v);
@ -296,10 +240,15 @@ extern void xfs_bmbt_disk_set_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
extern void xfs_bmbt_disk_set_allf(xfs_bmbt_rec_t *r, xfs_fileoff_t o,
xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v);
extern void xfs_bmbt_to_bmdr(xfs_bmbt_block_t *, int, xfs_bmdr_block_t *, int);
extern int xfs_bmbt_update(struct xfs_btree_cur *, xfs_fileoff_t,
xfs_fsblock_t, xfs_filblks_t, xfs_exntst_t);
extern void xfs_bmbt_to_bmdr(struct xfs_mount *, struct xfs_btree_block *, int,
xfs_bmdr_block_t *, int);
extern int xfs_bmbt_get_maxrecs(struct xfs_btree_cur *, int level);
extern int xfs_bmdr_maxrecs(struct xfs_mount *, int blocklen, int leaf);
extern int xfs_bmbt_maxrecs(struct xfs_mount *, int blocklen, int leaf);
extern struct xfs_btree_cur *xfs_bmbt_init_cursor(struct xfs_mount *,
struct xfs_trans *, struct xfs_inode *, int);
#endif /* __KERNEL__ */
#endif /* __XFS_BMAP_BTREE_H__ */

3604
fs/xfs/xfs_btree.c
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390
fs/xfs/xfs_btree.h
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@ -39,39 +39,19 @@ extern kmem_zone_t *xfs_btree_cur_zone;
#define XFS_BTNUM_INO ((xfs_btnum_t)XFS_BTNUM_INOi)
/*
* Short form header: space allocation btrees.
* Generic btree header.
*
* This is a comination of the actual format used on disk for short and long
* format btrees. The first three fields are shared by both format, but
* the pointers are different and should be used with care.
*
* To get the size of the actual short or long form headers please use
* the size macros below. Never use sizeof(xfs_btree_block).
*/
typedef struct xfs_btree_sblock {
struct xfs_btree_block {
__be32 bb_magic; /* magic number for block type */
__be16 bb_level; /* 0 is a leaf */
__be16 bb_numrecs; /* current # of data records */
__be32 bb_leftsib; /* left sibling block or NULLAGBLOCK */
__be32 bb_rightsib; /* right sibling block or NULLAGBLOCK */
} xfs_btree_sblock_t;
/*
* Long form header: bmap btrees.
*/
typedef struct xfs_btree_lblock {
__be32 bb_magic; /* magic number for block type */
__be16 bb_level; /* 0 is a leaf */
__be16 bb_numrecs; /* current # of data records */
__be64 bb_leftsib; /* left sibling block or NULLDFSBNO */
__be64 bb_rightsib; /* right sibling block or NULLDFSBNO */
} xfs_btree_lblock_t;
/*
* Combined header and structure, used by common code.
*/
typedef struct xfs_btree_hdr
{
__be32 bb_magic; /* magic number for block type */
__be16 bb_level; /* 0 is a leaf */
__be16 bb_numrecs; /* current # of data records */
} xfs_btree_hdr_t;
typedef struct xfs_btree_block {
xfs_btree_hdr_t bb_h; /* header */
union {
struct {
__be32 bb_leftsib;
@ -82,7 +62,36 @@ typedef struct xfs_btree_block {
__be64 bb_rightsib;
} l; /* long form pointers */
} bb_u; /* rest */
} xfs_btree_block_t;
};
#define XFS_BTREE_SBLOCK_LEN 16 /* size of a short form block */
#define XFS_BTREE_LBLOCK_LEN 24 /* size of a long form block */
/*
* Generic key, ptr and record wrapper structures.
*
* These are disk format structures, and are converted where necessary
* by the btree specific code that needs to interpret them.
*/
union xfs_btree_ptr {
__be32 s; /* short form ptr */
__be64 l; /* long form ptr */
};
union xfs_btree_key {
xfs_bmbt_key_t bmbt;
xfs_bmdr_key_t bmbr; /* bmbt root block */
xfs_alloc_key_t alloc;
xfs_inobt_key_t inobt;
};
union xfs_btree_rec {
xfs_bmbt_rec_t bmbt;
xfs_bmdr_rec_t bmbr; /* bmbt root block */
xfs_alloc_rec_t alloc;
xfs_inobt_rec_t inobt;
};
/*
* For logging record fields.
@ -95,47 +104,132 @@ typedef struct xfs_btree_block {
#define XFS_BB_NUM_BITS 5
#define XFS_BB_ALL_BITS ((1 << XFS_BB_NUM_BITS) - 1)
/*
* Boolean to select which form of xfs_btree_block_t.bb_u to use.
*/
#define XFS_BTREE_LONG_PTRS(btnum) ((btnum) == XFS_BTNUM_BMAP)
/*
* Magic numbers for btree blocks.
*/
extern const __uint32_t xfs_magics[];
/*
* Maximum and minimum records in a btree block.
* Given block size, type prefix, and leaf flag (0 or 1).
* The divisor below is equivalent to lf ? (e1) : (e2) but that produces
* compiler warnings.
* Generic stats interface
*/
#define XFS_BTREE_BLOCK_MAXRECS(bsz,t,lf) \
((int)(((bsz) - (uint)sizeof(t ## _block_t)) / \
(((lf) * (uint)sizeof(t ## _rec_t)) + \
((1 - (lf)) * \
((uint)sizeof(t ## _key_t) + (uint)sizeof(t ## _ptr_t))))))
#define XFS_BTREE_BLOCK_MINRECS(bsz,t,lf) \
(XFS_BTREE_BLOCK_MAXRECS(bsz,t,lf) / 2)
#define __XFS_BTREE_STATS_INC(type, stat) \
XFS_STATS_INC(xs_ ## type ## _2_ ## stat)
#define XFS_BTREE_STATS_INC(cur, stat) \
do { \
switch (cur->bc_btnum) { \
case XFS_BTNUM_BNO: __XFS_BTREE_STATS_INC(abtb, stat); break; \
case XFS_BTNUM_CNT: __XFS_BTREE_STATS_INC(abtc, stat); break; \
case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_INC(bmbt, stat); break; \
case XFS_BTNUM_INO: __XFS_BTREE_STATS_INC(ibt, stat); break; \
case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
} \
} while (0)
/*
* Record, key, and pointer address calculation macros.
* Given block size, type prefix, block pointer, and index of requested entry
* (first entry numbered 1).
*/
#define XFS_BTREE_REC_ADDR(t,bb,i) \
((t ## _rec_t *)((char *)(bb) + sizeof(t ## _block_t) + \
((i) - 1) * sizeof(t ## _rec_t)))
#define XFS_BTREE_KEY_ADDR(t,bb,i) \
((t ## _key_t *)((char *)(bb) + sizeof(t ## _block_t) + \
((i) - 1) * sizeof(t ## _key_t)))
#define XFS_BTREE_PTR_ADDR(t,bb,i,mxr) \
((t ## _ptr_t *)((char *)(bb) + sizeof(t ## _block_t) + \
(mxr) * sizeof(t ## _key_t) + ((i) - 1) * sizeof(t ## _ptr_t)))
#define __XFS_BTREE_STATS_ADD(type, stat, val) \
XFS_STATS_ADD(xs_ ## type ## _2_ ## stat, val)
#define XFS_BTREE_STATS_ADD(cur, stat, val) \
do { \
switch (cur->bc_btnum) { \
case XFS_BTNUM_BNO: __XFS_BTREE_STATS_ADD(abtb, stat, val); break; \
case XFS_BTNUM_CNT: __XFS_BTREE_STATS_ADD(abtc, stat, val); break; \
case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_ADD(bmbt, stat, val); break; \
case XFS_BTNUM_INO: __XFS_BTREE_STATS_ADD(ibt, stat, val); break; \
case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
} \
} while (0)
#define XFS_BTREE_MAXLEVELS 8 /* max of all btrees */
struct xfs_btree_ops {
/* size of the key and record structures */
size_t key_len;
size_t rec_len;
/* cursor operations */
struct xfs_btree_cur *(*dup_cursor)(struct xfs_btree_cur *);
void (*update_cursor)(struct xfs_btree_cur *src,
struct xfs_btree_cur *dst);
/* update btree root pointer */
void (*set_root)(struct xfs_btree_cur *cur,
union xfs_btree_ptr *nptr, int level_change);
int (*kill_root)(struct xfs_btree_cur *cur, struct xfs_buf *bp,
int level, union xfs_btree_ptr *newroot);
/* block allocation / freeing */
int (*alloc_block)(struct xfs_btree_cur *cur,
union xfs_btree_ptr *start_bno,
union xfs_btree_ptr *new_bno,
int length, int *stat);
int (*free_block)(struct xfs_btree_cur *cur, struct xfs_buf *bp);
/* update last record information */
void (*update_lastrec)(struct xfs_btree_cur *cur,
struct xfs_btree_block *block,
union xfs_btree_rec *rec,
int ptr, int reason);
/* records in block/level */
int (*get_minrecs)(struct xfs_btree_cur *cur, int level);
int (*get_maxrecs)(struct xfs_btree_cur *cur, int level);
/* records on disk. Matter for the root in inode case. */
int (*get_dmaxrecs)(struct xfs_btree_cur *cur, int level);
/* init values of btree structures */
void (*init_key_from_rec)(union xfs_btree_key *key,
union xfs_btree_rec *rec);
void (*init_rec_from_key)(union xfs_btree_key *key,
union xfs_btree_rec *rec);
void (*init_rec_from_cur)(struct xfs_btree_cur *cur,
union xfs_btree_rec *rec);
void (*init_ptr_from_cur)(struct xfs_btree_cur *cur,
union xfs_btree_ptr *ptr);
/* difference between key value and cursor value */
__int64_t (*key_diff)(struct xfs_btree_cur *cur,
union xfs_btree_key *key);
#ifdef DEBUG
/* check that k1 is lower than k2 */
int (*keys_inorder)(struct xfs_btree_cur *cur,
union xfs_btree_key *k1,
union xfs_btree_key *k2);
/* check that r1 is lower than r2 */
int (*recs_inorder)(struct xfs_btree_cur *cur,
union xfs_btree_rec *r1,
union xfs_btree_rec *r2);
#endif
/* btree tracing */
#ifdef XFS_BTREE_TRACE
void (*trace_enter)(struct xfs_btree_cur *, const char *,
char *, int, int, __psunsigned_t,
__psunsigned_t, __psunsigned_t,
__psunsigned_t, __psunsigned_t,
__psunsigned_t, __psunsigned_t,
__psunsigned_t, __psunsigned_t,
__psunsigned_t, __psunsigned_t);
void (*trace_cursor)(struct xfs_btree_cur *, __uint32_t *,
__uint64_t *, __uint64_t *);
void (*trace_key)(struct xfs_btree_cur *,
union xfs_btree_key *, __uint64_t *,
__uint64_t *);
void (*trace_record)(struct xfs_btree_cur *,
union xfs_btree_rec *, __uint64_t *,
__uint64_t *, __uint64_t *);
#endif
};
/*
* Reasons for the update_lastrec method to be called.
*/
#define LASTREC_UPDATE 0
#define LASTREC_INSREC 1
#define LASTREC_DELREC 2
/*
* Btree cursor structure.
* This collects all information needed by the btree code in one place.
@ -144,6 +238,8 @@ typedef struct xfs_btree_cur
{
struct xfs_trans *bc_tp; /* transaction we're in, if any */
struct xfs_mount *bc_mp; /* file system mount struct */
const struct xfs_btree_ops *bc_ops;
uint bc_flags; /* btree features - below */
union {
xfs_alloc_rec_incore_t a;
xfs_bmbt_irec_t b;
@ -175,94 +271,40 @@ typedef struct xfs_btree_cur
} bc_private; /* per-btree type data */
} xfs_btree_cur_t;
/* cursor flags */
#define XFS_BTREE_LONG_PTRS (1<<0) /* pointers are 64bits long */
#define XFS_BTREE_ROOT_IN_INODE (1<<1) /* root may be variable size */
#define XFS_BTREE_LASTREC_UPDATE (1<<2) /* track last rec externally */
#define XFS_BTREE_NOERROR 0
#define XFS_BTREE_ERROR 1
/*
* Convert from buffer to btree block header.
*/
#define XFS_BUF_TO_BLOCK(bp) ((xfs_btree_block_t *)XFS_BUF_PTR(bp))
#define XFS_BUF_TO_LBLOCK(bp) ((xfs_btree_lblock_t *)XFS_BUF_PTR(bp))
#define XFS_BUF_TO_SBLOCK(bp) ((xfs_btree_sblock_t *)XFS_BUF_PTR(bp))
#define XFS_BUF_TO_BLOCK(bp) ((struct xfs_btree_block *)XFS_BUF_PTR(bp))
#ifdef __KERNEL__
#ifdef DEBUG
/*
* Debug routine: check that block header is ok.
* Check that block header is ok.
*/
void
int
xfs_btree_check_block(
xfs_btree_cur_t *cur, /* btree cursor */
xfs_btree_block_t *block, /* generic btree block pointer */
struct xfs_btree_cur *cur, /* btree cursor */
struct xfs_btree_block *block, /* generic btree block pointer */
int level, /* level of the btree block */
struct xfs_buf *bp); /* buffer containing block, if any */
/*
* Debug routine: check that keys are in the right order.
*/
void
xfs_btree_check_key(
xfs_btnum_t btnum, /* btree identifier */
void *ak1, /* pointer to left (lower) key */
void *ak2); /* pointer to right (higher) key */
/*
* Debug routine: check that records are in the right order.
*/
void
xfs_btree_check_rec(
xfs_btnum_t btnum, /* btree identifier */
void *ar1, /* pointer to left (lower) record */
void *ar2); /* pointer to right (higher) record */
#else
#define xfs_btree_check_block(a,b,c,d)
#define xfs_btree_check_key(a,b,c)
#define xfs_btree_check_rec(a,b,c)
#endif /* DEBUG */
/*
* Checking routine: check that long form block header is ok.
*/
int /* error (0 or EFSCORRUPTED) */
xfs_btree_check_lblock(
xfs_btree_cur_t *cur, /* btree cursor */
xfs_btree_lblock_t *block, /* btree long form block pointer */
int level, /* level of the btree block */
struct xfs_buf *bp); /* buffer containing block, if any */
/*
* Checking routine: check that (long) pointer is ok.
* Check that (long) pointer is ok.
*/
int /* error (0 or EFSCORRUPTED) */
xfs_btree_check_lptr(
xfs_btree_cur_t *cur, /* btree cursor */
struct xfs_btree_cur *cur, /* btree cursor */
xfs_dfsbno_t ptr, /* btree block disk address */
int level); /* btree block level */
#define xfs_btree_check_lptr_disk(cur, ptr, level) \
xfs_btree_check_lptr(cur, be64_to_cpu(ptr), level)
/*
* Checking routine: check that short form block header is ok.
*/
int /* error (0 or EFSCORRUPTED) */
xfs_btree_check_sblock(
xfs_btree_cur_t *cur, /* btree cursor */
xfs_btree_sblock_t *block, /* btree short form block pointer */
int level, /* level of the btree block */
struct xfs_buf *bp); /* buffer containing block */
/*
* Checking routine: check that (short) pointer is ok.
*/
int /* error (0 or EFSCORRUPTED) */
xfs_btree_check_sptr(
xfs_btree_cur_t *cur, /* btree cursor */
xfs_agblock_t ptr, /* btree block disk address */
int level); /* btree block level */
/*
* Delete the btree cursor.
*/
@ -280,15 +322,6 @@ xfs_btree_dup_cursor(
xfs_btree_cur_t *cur, /* input cursor */
xfs_btree_cur_t **ncur);/* output cursor */
/*
* Change the cursor to point to the first record in the current block
* at the given level. Other levels are unaffected.
*/
int /* success=1, failure=0 */
xfs_btree_firstrec(
xfs_btree_cur_t *cur, /* btree cursor */
int level); /* level to change */
/*
* Get a buffer for the block, return it with no data read.
* Long-form addressing.
@ -312,20 +345,6 @@ xfs_btree_get_bufs(
xfs_agblock_t agbno, /* allocation group block number */
uint lock); /* lock flags for get_buf */
/*
* Allocate a new btree cursor.
* The cursor is either for allocation (A) or bmap (B).
*/
xfs_btree_cur_t * /* new btree cursor */
xfs_btree_init_cursor(
struct xfs_mount *mp, /* file system mount point */
struct xfs_trans *tp, /* transaction pointer */
struct xfs_buf *agbp, /* (A only) buffer for agf structure */
xfs_agnumber_t agno, /* (A only) allocation group number */
xfs_btnum_t btnum, /* btree identifier */
struct xfs_inode *ip, /* (B only) inode owning the btree */
int whichfork); /* (B only) data/attr fork */
/*
* Check for the cursor referring to the last block at the given level.
*/
@ -334,15 +353,6 @@ xfs_btree_islastblock(
xfs_btree_cur_t *cur, /* btree cursor */
int level); /* level to check */
/*
* Change the cursor to point to the last record in the current block
* at the given level. Other levels are unaffected.
*/
int /* success=1, failure=0 */
xfs_btree_lastrec(
xfs_btree_cur_t *cur, /* btree cursor */
int level); /* level to change */
/*
* Compute first and last byte offsets for the fields given.
* Interprets the offsets table, which contains struct field offsets.
@ -403,29 +413,6 @@ xfs_btree_reada_bufs(
xfs_agblock_t agbno, /* allocation group block number */
xfs_extlen_t count); /* count of filesystem blocks */
/*
* Read-ahead btree blocks, at the given level.
* Bits in lr are set from XFS_BTCUR_{LEFT,RIGHT}RA.
*/
int /* readahead block count */
xfs_btree_readahead_core(
xfs_btree_cur_t *cur, /* btree cursor */
int lev, /* level in btree */
int lr); /* left/right bits */
static inline int /* readahead block count */
xfs_btree_readahead(
xfs_btree_cur_t *cur, /* btree cursor */
int lev, /* level in btree */
int lr) /* left/right bits */
{
if ((cur->bc_ra[lev] | lr) == cur->bc_ra[lev])
return 0;
return xfs_btree_readahead_core(cur, lev, lr);
}
/*
* Set the buffer for level "lev" in the cursor to bp, releasing
* any previous buffer.
@ -436,7 +423,44 @@ xfs_btree_setbuf(
int lev, /* level in btree */
struct xfs_buf *bp); /* new buffer to set */
#endif /* __KERNEL__ */
/*
* Common btree core entry points.
*/
int xfs_btree_increment(struct xfs_btree_cur *, int, int *);
int xfs_btree_decrement(struct xfs_btree_cur *, int, int *);
int xfs_btree_lookup(struct xfs_btree_cur *, xfs_lookup_t, int *);
int xfs_btree_update(struct xfs_btree_cur *, union xfs_btree_rec *);
int xfs_btree_new_iroot(struct xfs_btree_cur *, int *, int *);
int xfs_btree_kill_iroot(struct xfs_btree_cur *);
int xfs_btree_insert(struct xfs_btree_cur *, int *);
int xfs_btree_delete(struct xfs_btree_cur *, int *);
int xfs_btree_get_rec(struct xfs_btree_cur *, union xfs_btree_rec **, int *);
/*
* Internal btree helpers also used by xfs_bmap.c.
*/
void xfs_btree_log_block(struct xfs_btree_cur *, struct xfs_buf *, int);
void xfs_btree_log_recs(struct xfs_btree_cur *, struct xfs_buf *, int, int);
/*
* Helpers.
*/
static inline int xfs_btree_get_numrecs(struct xfs_btree_block *block)
{
return be16_to_cpu(block->bb_numrecs);
}
static inline void xfs_btree_set_numrecs(struct xfs_btree_block *block,
__uint16_t numrecs)
{
block->bb_numrecs = cpu_to_be16(numrecs);
}
static inline int xfs_btree_get_level(struct xfs_btree_block *block)
{
return be16_to_cpu(block->bb_level);
}
/*

249
fs/xfs/xfs_btree_trace.c Normal file
Просмотреть файл

@ -0,0 +1,249 @@
/*
* Copyright (c) 2008 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "xfs.h"
#include "xfs_types.h"
#include "xfs_inum.h"
#include "xfs_bmap_btree.h"
#include "xfs_alloc_btree.h"
#include "xfs_ialloc_btree.h"
#include "xfs_inode.h"
#include "xfs_btree.h"
#include "xfs_btree_trace.h"
STATIC void
xfs_btree_trace_ptr(
struct xfs_btree_cur *cur,
union xfs_btree_ptr ptr,
__psunsigned_t *high,
__psunsigned_t *low)
{
if (cur->bc_flags & XFS_BTREE_LONG_PTRS) {
__u64 val = be64_to_cpu(ptr.l);
*high = val >> 32;
*low = (int)val;
} else {
*high = 0;
*low = be32_to_cpu(ptr.s);
}
}
/*
* Add a trace buffer entry for arguments, for a buffer & 1 integer arg.
*/
void
xfs_btree_trace_argbi(
const char *func,
struct xfs_btree_cur *cur,
struct xfs_buf *b,
int i,
int line)
{
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGBI,
line, (__psunsigned_t)b, i, 0, 0, 0, 0, 0,
0, 0, 0, 0);
}
/*
* Add a trace buffer entry for arguments, for a buffer & 2 integer args.
*/
void
xfs_btree_trace_argbii(
const char *func,
struct xfs_btree_cur *cur,
struct xfs_buf *b,
int i0,
int i1,
int line)
{
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGBII,
line, (__psunsigned_t)b, i0, i1, 0, 0, 0, 0,
0, 0, 0, 0);
}
/*
* Add a trace buffer entry for arguments, for 3 block-length args
* and an integer arg.
*/
void
xfs_btree_trace_argfffi(
const char *func,
struct xfs_btree_cur *cur,
xfs_dfiloff_t o,
xfs_dfsbno_t b,
xfs_dfilblks_t i,
int j,
int line)
{
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGFFFI,
line,
o >> 32, (int)o,
b >> 32, (int)b,
i >> 32, (int)i,
(int)j, 0, 0, 0, 0);
}
/*
* Add a trace buffer entry for arguments, for one integer arg.
*/
void
xfs_btree_trace_argi(
const char *func,
struct xfs_btree_cur *cur,
int i,
int line)
{
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGI,
line, i, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
}
/*
* Add a trace buffer entry for arguments, for int, fsblock, key.
*/
void
xfs_btree_trace_argipk(
const char *func,
struct xfs_btree_cur *cur,
int i,
union xfs_btree_ptr ptr,
union xfs_btree_key *key,
int line)
{
__psunsigned_t high, low;
__uint64_t l0, l1;
xfs_btree_trace_ptr(cur, ptr, &high, &low);
cur->bc_ops->trace_key(cur, key, &l0, &l1);
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGIPK,
line, i, high, low,
l0 >> 32, (int)l0,
l1 >> 32, (int)l1,
0, 0, 0, 0);
}
/*
* Add a trace buffer entry for arguments, for int, fsblock, rec.
*/
void
xfs_btree_trace_argipr(
const char *func,
struct xfs_btree_cur *cur,
int i,
union xfs_btree_ptr ptr,
union xfs_btree_rec *rec,
int line)
{
__psunsigned_t high, low;
__uint64_t l0, l1, l2;
xfs_btree_trace_ptr(cur, ptr, &high, &low);
cur->bc_ops->trace_record(cur, rec, &l0, &l1, &l2);
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGIPR,
line, i,
high, low,
l0 >> 32, (int)l0,
l1 >> 32, (int)l1,
l2 >> 32, (int)l2,
0, 0);
}
/*
* Add a trace buffer entry for arguments, for int, key.
*/
void
xfs_btree_trace_argik(
const char *func,
struct xfs_btree_cur *cur,
int i,
union xfs_btree_key *key,
int line)
{
__uint64_t l0, l1;
cur->bc_ops->trace_key(cur, key, &l0, &l1);
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGIK,
line, i,
l0 >> 32, (int)l0,
l1 >> 32, (int)l1,
0, 0, 0, 0, 0, 0);
}
/*
* Add a trace buffer entry for arguments, for record.
*/
void
xfs_btree_trace_argr(
const char *func,
struct xfs_btree_cur *cur,
union xfs_btree_rec *rec,
int line)
{
__uint64_t l0, l1, l2;
cur->bc_ops->trace_record(cur, rec, &l0, &l1, &l2);
cur->bc_ops->trace_enter(cur, func, XBT_ARGS, XFS_BTREE_KTRACE_ARGR,
line,
l0 >> 32, (int)l0,
l1 >> 32, (int)l1,
l2 >> 32, (int)l2,
0, 0, 0, 0, 0);
}
/*
* Add a trace buffer entry for the cursor/operation.
*/
void
xfs_btree_trace_cursor(
const char *func,
struct xfs_btree_cur *cur,
int type,
int line)
{
__uint32_t s0;
__uint64_t l0, l1;
char *s;
switch (type) {
case XBT_ARGS:
s = "args";
break;
case XBT_ENTRY:
s = "entry";
break;
case XBT_ERROR:
s = "error";
break;
case XBT_EXIT:
s = "exit";
break;
default:
s = "unknown";
break;
}
cur->bc_ops->trace_cursor(cur, &s0, &l0, &l1);
cur->bc_ops->trace_enter(cur, func, s, XFS_BTREE_KTRACE_CUR, line,
s0,
l0 >> 32, (int)l0,
l1 >> 32, (int)l1,
(__psunsigned_t)cur->bc_bufs[0],
(__psunsigned_t)cur->bc_bufs[1],
(__psunsigned_t)cur->bc_bufs[2],
(__psunsigned_t)cur->bc_bufs[3],
(cur->bc_ptrs[0] << 16) | cur->bc_ptrs[1],
(cur->bc_ptrs[2] << 16) | cur->bc_ptrs[3]);
}

116
fs/xfs/xfs_btree_trace.h Normal file
Просмотреть файл

@ -0,0 +1,116 @@
/*
* Copyright (c) 2008 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_BTREE_TRACE_H__
#define __XFS_BTREE_TRACE_H__
struct xfs_btree_cur;
struct xfs_buf;
/*
* Trace hooks.
* i,j = integer (32 bit)
* b = btree block buffer (xfs_buf_t)
* p = btree ptr
* r = btree record
* k = btree key
*/
#ifdef XFS_BTREE_TRACE
/*
* Trace buffer entry types.
*/
#define XFS_BTREE_KTRACE_ARGBI 1
#define XFS_BTREE_KTRACE_ARGBII 2
#define XFS_BTREE_KTRACE_ARGFFFI 3
#define XFS_BTREE_KTRACE_ARGI 4
#define XFS_BTREE_KTRACE_ARGIPK 5
#define XFS_BTREE_KTRACE_ARGIPR 6
#define XFS_BTREE_KTRACE_ARGIK 7
#define XFS_BTREE_KTRACE_ARGR 8
#define XFS_BTREE_KTRACE_CUR 9
/*
* Sub-types for cursor traces.
*/
#define XBT_ARGS 0
#define XBT_ENTRY 1
#define XBT_ERROR 2
#define XBT_EXIT 3
void xfs_btree_trace_argbi(const char *, struct xfs_btree_cur *,
struct xfs_buf *, int, int);
void xfs_btree_trace_argbii(const char *, struct xfs_btree_cur *,
struct xfs_buf *, int, int, int);
void xfs_btree_trace_argfffi(const char *, struct xfs_btree_cur *,
xfs_dfiloff_t, xfs_dfsbno_t, xfs_dfilblks_t, int, int);
void xfs_btree_trace_argi(const char *, struct xfs_btree_cur *, int, int);
void xfs_btree_trace_argipk(const char *, struct xfs_btree_cur *, int,
union xfs_btree_ptr, union xfs_btree_key *, int);
void xfs_btree_trace_argipr(const char *, struct xfs_btree_cur *, int,
union xfs_btree_ptr, union xfs_btree_rec *, int);
void xfs_btree_trace_argik(const char *, struct xfs_btree_cur *, int,
union xfs_btree_key *, int);
void xfs_btree_trace_argr(const char *, struct xfs_btree_cur *,
union xfs_btree_rec *, int);
void xfs_btree_trace_cursor(const char *, struct xfs_btree_cur *, int, int);
#define XFS_ALLOCBT_TRACE_SIZE 4096 /* size of global trace buffer */
extern ktrace_t *xfs_allocbt_trace_buf;
#define XFS_INOBT_TRACE_SIZE 4096 /* size of global trace buffer */
extern ktrace_t *xfs_inobt_trace_buf;
#define XFS_BMBT_TRACE_SIZE 4096 /* size of global trace buffer */
#define XFS_BMBT_KTRACE_SIZE 32 /* size of per-inode trace buffer */
extern ktrace_t *xfs_bmbt_trace_buf;
#define XFS_BTREE_TRACE_ARGBI(c, b, i) \
xfs_btree_trace_argbi(__func__, c, b, i, __LINE__)
#define XFS_BTREE_TRACE_ARGBII(c, b, i, j) \
xfs_btree_trace_argbii(__func__, c, b, i, j, __LINE__)
#define XFS_BTREE_TRACE_ARGFFFI(c, o, b, i, j) \
xfs_btree_trace_argfffi(__func__, c, o, b, i, j, __LINE__)
#define XFS_BTREE_TRACE_ARGI(c, i) \
xfs_btree_trace_argi(__func__, c, i, __LINE__)
#define XFS_BTREE_TRACE_ARGIPK(c, i, p, k) \
xfs_btree_trace_argipk(__func__, c, i, p, k, __LINE__)
#define XFS_BTREE_TRACE_ARGIPR(c, i, p, r) \
xfs_btree_trace_argipr(__func__, c, i, p, r, __LINE__)
#define XFS_BTREE_TRACE_ARGIK(c, i, k) \
xfs_btree_trace_argik(__func__, c, i, k, __LINE__)
#define XFS_BTREE_TRACE_ARGR(c, r) \
xfs_btree_trace_argr(__func__, c, r, __LINE__)
#define XFS_BTREE_TRACE_CURSOR(c, t) \
xfs_btree_trace_cursor(__func__, c, t, __LINE__)
#else
#define XFS_BTREE_TRACE_ARGBI(c, b, i)
#define XFS_BTREE_TRACE_ARGBII(c, b, i, j)
#define XFS_BTREE_TRACE_ARGFFFI(c, o, b, i, j)
#define XFS_BTREE_TRACE_ARGI(c, i)
#define XFS_BTREE_TRACE_ARGIPK(c, i, p, s)
#define XFS_BTREE_TRACE_ARGIPR(c, i, p, r)
#define XFS_BTREE_TRACE_ARGIK(c, i, k)
#define XFS_BTREE_TRACE_ARGR(c, r)
#define XFS_BTREE_TRACE_CURSOR(c, t)
#endif /* XFS_BTREE_TRACE */
#endif /* __XFS_BTREE_TRACE_H__ */

25
fs/xfs/xfs_buf_item.c
Просмотреть файл

@ -375,7 +375,7 @@ xfs_buf_item_unpin(
xfs_buf_log_item_t *bip,
int stale)
{
xfs_mount_t *mp;
struct xfs_ail *ailp;
xfs_buf_t *bp;
int freed;
@ -387,7 +387,7 @@ xfs_buf_item_unpin(
xfs_buftrace("XFS_UNPIN", bp);
freed = atomic_dec_and_test(&bip->bli_refcount);
mp = bip->bli_item.li_mountp;
ailp = bip->bli_item.li_ailp;
xfs_bunpin(bp);
if (freed && stale) {
ASSERT(bip->bli_flags & XFS_BLI_STALE);
@ -399,17 +399,17 @@ xfs_buf_item_unpin(
xfs_buftrace("XFS_UNPIN STALE", bp);
/*
* If we get called here because of an IO error, we may
* or may not have the item on the AIL. xfs_trans_delete_ail()
* or may not have the item on the AIL. xfs_trans_ail_delete()
* will take care of that situation.
* xfs_trans_delete_ail() drops the AIL lock.
* xfs_trans_ail_delete() drops the AIL lock.
*/
if (bip->bli_flags & XFS_BLI_STALE_INODE) {
xfs_buf_do_callbacks(bp, (xfs_log_item_t *)bip);
XFS_BUF_SET_FSPRIVATE(bp, NULL);
XFS_BUF_CLR_IODONE_FUNC(bp);
} else {
spin_lock(&mp->m_ail_lock);
xfs_trans_delete_ail(mp, (xfs_log_item_t *)bip);
spin_lock(&ailp->xa_lock);
xfs_trans_ail_delete(ailp, (xfs_log_item_t *)bip);
xfs_buf_item_relse(bp);
ASSERT(XFS_BUF_FSPRIVATE(bp, void *) == NULL);
}
@ -731,6 +731,7 @@ xfs_buf_item_init(
bip->bli_item.li_type = XFS_LI_BUF;
bip->bli_item.li_ops = &xfs_buf_item_ops;
bip->bli_item.li_mountp = mp;
bip->bli_item.li_ailp = mp->m_ail;
bip->bli_buf = bp;
xfs_buf_hold(bp);
bip->bli_format.blf_type = XFS_LI_BUF;
@ -1122,27 +1123,23 @@ xfs_buf_iodone(
xfs_buf_t *bp,
xfs_buf_log_item_t *bip)
{
struct xfs_mount *mp;
struct xfs_ail *ailp = bip->bli_item.li_ailp;
ASSERT(bip->bli_buf == bp);
xfs_buf_rele(bp);
mp = bip->bli_item.li_mountp;
/*
* If we are forcibly shutting down, this may well be
* off the AIL already. That's because we simulate the
* log-committed callbacks to unpin these buffers. Or we may never
* have put this item on AIL because of the transaction was
* aborted forcibly. xfs_trans_delete_ail() takes care of these.
* aborted forcibly. xfs_trans_ail_delete() takes care of these.
*
* Either way, AIL is useless if we're forcing a shutdown.
*/
spin_lock(&mp->m_ail_lock);
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
xfs_trans_delete_ail(mp, (xfs_log_item_t *)bip);
spin_lock(&ailp->xa_lock);
xfs_trans_ail_delete(ailp, (xfs_log_item_t *)bip);
xfs_buf_item_free(bip);
}

105
fs/xfs/xfs_clnt.h
Просмотреть файл

@ -1,105 +0,0 @@
/*
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __XFS_CLNT_H__
#define __XFS_CLNT_H__
/*
* XFS arguments structure, constructed from the arguments we
* are passed via the mount system call.
*
* NOTE: The mount system call is handled differently between
* Linux and IRIX. In IRIX we worked work with a binary data
* structure coming in across the syscall interface from user
* space (the mount userspace knows about each filesystem type
* and the set of valid options for it, and converts the users
* argument string into a binary structure _before_ making the
* system call), and the ABI issues that this implies.
*
* In Linux, we are passed a comma separated set of options;
* ie. a NULL terminated string of characters. Userspace mount
* code does not have any knowledge of mount options expected by
* each filesystem type and so each filesystem parses its mount
* options in kernel space.
*
* For the Linux port, we kept this structure pretty much intact
* and use it internally (because the existing code groks it).
*/
struct xfs_mount_args {
int flags; /* flags -> see XFSMNT_... macros below */
int flags2; /* flags -> see XFSMNT2_... macros below */
int logbufs; /* Number of log buffers, -1 to default */
int logbufsize; /* Size of log buffers, -1 to default */
char fsname[MAXNAMELEN+1]; /* data device name */
char rtname[MAXNAMELEN+1]; /* realtime device filename */
char logname[MAXNAMELEN+1]; /* journal device filename */
char mtpt[MAXNAMELEN+1]; /* filesystem mount point */
int sunit; /* stripe unit (BBs) */
int swidth; /* stripe width (BBs), multiple of sunit */
uchar_t iosizelog; /* log2 of the preferred I/O size */
int ihashsize; /* inode hash table size (buckets) */
};
/*
* XFS mount option flags -- args->flags1
*/
#define XFSMNT_ATTR2 0x00000001 /* allow ATTR2 EA format */
#define XFSMNT_WSYNC 0x00000002 /* safe mode nfs mount
* compatible */
#define XFSMNT_INO64 0x00000004 /* move inode numbers up
* past 2^32 */
#define XFSMNT_UQUOTA 0x00000008 /* user quota accounting */
#define XFSMNT_PQUOTA 0x00000010 /* IRIX prj quota accounting */
#define XFSMNT_UQUOTAENF 0x00000020 /* user quota limit
* enforcement */
#define XFSMNT_PQUOTAENF 0x00000040 /* IRIX project quota limit
* enforcement */
#define XFSMNT_QUIET 0x00000080 /* don't report mount errors */
#define XFSMNT_NOALIGN 0x00000200 /* don't allocate at
* stripe boundaries*/
#define XFSMNT_RETERR 0x00000400 /* return error to user */
#define XFSMNT_NORECOVERY 0x00000800 /* no recovery, implies
* read-only mount */
#define XFSMNT_SHARED 0x00001000 /* shared XFS mount */
#define XFSMNT_IOSIZE 0x00002000 /* optimize for I/O size */
#define XFSMNT_OSYNCISOSYNC 0x00004000 /* o_sync is REALLY o_sync */
/* (osyncisdsync is default) */
#define XFSMNT_NOATTR2 0x00008000 /* turn off ATTR2 EA format */
#define XFSMNT_32BITINODES 0x00200000 /* restrict inodes to 32
* bits of address space */
#define XFSMNT_GQUOTA 0x00400000 /* group quota accounting */
#define XFSMNT_GQUOTAENF 0x00800000 /* group quota limit
* enforcement */
#define XFSMNT_NOUUID 0x01000000 /* Ignore fs uuid */
#define XFSMNT_DMAPI 0x02000000 /* enable dmapi/xdsm */
#define XFSMNT_BARRIER 0x04000000 /* use write barriers */
#define XFSMNT_IKEEP 0x08000000 /* inode cluster delete */
#define XFSMNT_SWALLOC 0x10000000 /* turn on stripe width
* allocation */
#define XFSMNT_DIRSYNC 0x40000000 /* sync creat,link,unlink,rename
* symlink,mkdir,rmdir,mknod */
#define XFSMNT_FLAGS2 0x80000000 /* more flags set in flags2 */
/*
* XFS mount option flags -- args->flags2
*/
#define XFSMNT2_COMPAT_IOSIZE 0x00000001 /* don't report large preferred
* I/O size in stat(2) */
#define XFSMNT2_FILESTREAMS 0x00000002 /* enable the filestreams
* allocator */
#endif /* __XFS_CLNT_H__ */

5
fs/xfs/xfs_da_btree.c
Просмотреть файл

@ -1566,11 +1566,14 @@ xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno)
int nmap, error, w, count, c, got, i, mapi;
xfs_trans_t *tp;
xfs_mount_t *mp;
xfs_drfsbno_t nblks;
dp = args->dp;
mp = dp->i_mount;
w = args->whichfork;
tp = args->trans;
nblks = dp->i_d.di_nblocks;
/*
* For new directories adjust the file offset and block count.
*/
@ -1647,6 +1650,8 @@ xfs_da_grow_inode(xfs_da_args_t *args, xfs_dablk_t *new_blkno)
}
if (mapp != &map)
kmem_free(mapp);
/* account for newly allocated blocks in reserved blocks total */
args->total -= dp->i_d.di_nblocks - nblks;
*new_blkno = (xfs_dablk_t)bno;
return 0;
}

24
fs/xfs/xfs_da_btree.h
Просмотреть файл

@ -72,27 +72,7 @@ typedef struct xfs_da_intnode {
typedef struct xfs_da_node_hdr xfs_da_node_hdr_t;
typedef struct xfs_da_node_entry xfs_da_node_entry_t;
#define XFS_DA_MAXHASH ((xfs_dahash_t)-1) /* largest valid hash value */
#define XFS_LBSIZE(mp) (mp)->m_sb.sb_blocksize
#define XFS_LBLOG(mp) (mp)->m_sb.sb_blocklog
#define XFS_DA_MAKE_BNOENTRY(mp,bno,entry) \
(((bno) << (mp)->m_dircook_elog) | (entry))
#define XFS_DA_MAKE_COOKIE(mp,bno,entry,hash) \
(((xfs_off_t)XFS_DA_MAKE_BNOENTRY(mp, bno, entry) << 32) | (hash))
#define XFS_DA_COOKIE_HASH(mp,cookie) ((xfs_dahash_t)cookie)
#define XFS_DA_COOKIE_BNO(mp,cookie) \
((((xfs_off_t)(cookie) >> 31) == -1LL ? \
(xfs_dablk_t)0 : \
(xfs_dablk_t)((xfs_off_t)(cookie) >> \
((mp)->m_dircook_elog + 32))))
#define XFS_DA_COOKIE_ENTRY(mp,cookie) \
((((xfs_off_t)(cookie) >> 31) == -1LL ? \
(xfs_dablk_t)0 : \
(xfs_dablk_t)(((xfs_off_t)(cookie) >> 32) & \
((1 << (mp)->m_dircook_elog) - 1))))
/*========================================================================
* Btree searching and modification structure definitions.
@ -226,9 +206,8 @@ struct xfs_nameops {
};
#ifdef __KERNEL__
/*========================================================================
* Function prototypes for the kernel.
* Function prototypes.
*========================================================================*/
/*
@ -289,6 +268,5 @@ xfs_daddr_t xfs_da_blkno(xfs_dabuf_t *dabuf);
extern struct kmem_zone *xfs_da_state_zone;
extern struct kmem_zone *xfs_dabuf_zone;
#endif /* __KERNEL__ */
#endif /* __XFS_DA_BTREE_H__ */

5
fs/xfs/xfs_dinode.h
Просмотреть файл

@ -78,8 +78,7 @@ typedef struct xfs_dinode
xfs_dinode_core_t di_core;
/*
* In adding anything between the core and the union, be
* sure to update the macros like XFS_LITINO below and
* XFS_BMAP_RBLOCK_DSIZE in xfs_bmap_btree.h.
* sure to update the macros like XFS_LITINO below.
*/
__be32 di_next_unlinked;/* agi unlinked list ptr */
union {
@ -166,7 +165,7 @@ typedef enum xfs_dinode_fmt
*/
#define XFS_LITINO(mp) ((mp)->m_litino)
#define XFS_BROOT_SIZE_ADJ \
(sizeof(xfs_bmbt_block_t) - sizeof(xfs_bmdr_block_t))
(XFS_BTREE_LBLOCK_LEN - sizeof(xfs_bmdr_block_t))
/*
* Inode data & attribute fork sizes, per inode.

6
fs/xfs/xfs_dir2.c
Просмотреть файл

@ -525,11 +525,13 @@ xfs_dir2_grow_inode(
xfs_mount_t *mp;
int nmap; /* number of bmap entries */
xfs_trans_t *tp;
xfs_drfsbno_t nblks;
xfs_dir2_trace_args_s("grow_inode", args, space);
dp = args->dp;
tp = args->trans;
mp = dp->i_mount;
nblks = dp->i_d.di_nblocks;
/*
* Set lowest possible block in the space requested.
*/
@ -622,7 +624,11 @@ xfs_dir2_grow_inode(
*/
if (mapp != &map)
kmem_free(mapp);
/* account for newly allocated blocks in reserved blocks total */
args->total -= dp->i_d.di_nblocks - nblks;
*dbp = xfs_dir2_da_to_db(mp, (xfs_dablk_t)bno);
/*
* Update file's size if this is the data space and it grew.
*/

5
fs/xfs/xfs_dmops.c
Просмотреть файл

@ -25,7 +25,6 @@
#include "xfs_inum.h"
#include "xfs_ag.h"
#include "xfs_mount.h"
#include "xfs_clnt.h"
static struct xfs_dmops xfs_dmcore_stub = {
@ -38,9 +37,9 @@ static struct xfs_dmops xfs_dmcore_stub = {
};
int
xfs_dmops_get(struct xfs_mount *mp, struct xfs_mount_args *args)
xfs_dmops_get(struct xfs_mount *mp)
{
if (args->flags & XFSMNT_DMAPI) {
if (mp->m_flags & XFS_MOUNT_DMAPI) {
cmn_err(CE_WARN,
"XFS: dmapi support not available in this kernel.");
return EINVAL;

45
fs/xfs/xfs_extfree_item.c
Просмотреть файл

@ -108,19 +108,16 @@ xfs_efi_item_pin(xfs_efi_log_item_t *efip)
STATIC void
xfs_efi_item_unpin(xfs_efi_log_item_t *efip, int stale)
{
xfs_mount_t *mp;
struct xfs_ail *ailp = efip->efi_item.li_ailp;
mp = efip->efi_item.li_mountp;
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
if (efip->efi_flags & XFS_EFI_CANCELED) {
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip);
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, (xfs_log_item_t *)efip);
xfs_efi_item_free(efip);
} else {
efip->efi_flags |= XFS_EFI_COMMITTED;
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
}
@ -134,26 +131,23 @@ xfs_efi_item_unpin(xfs_efi_log_item_t *efip, int stale)
STATIC void
xfs_efi_item_unpin_remove(xfs_efi_log_item_t *efip, xfs_trans_t *tp)
{
xfs_mount_t *mp;
struct xfs_ail *ailp = efip->efi_item.li_ailp;
xfs_log_item_desc_t *lidp;
mp = efip->efi_item.li_mountp;
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
if (efip->efi_flags & XFS_EFI_CANCELED) {
/*
* free the xaction descriptor pointing to this item
*/
lidp = xfs_trans_find_item(tp, (xfs_log_item_t *) efip);
xfs_trans_free_item(tp, lidp);
/*
* pull the item off the AIL.
* xfs_trans_delete_ail() drops the AIL lock.
*/
xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip);
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, (xfs_log_item_t *)efip);
xfs_efi_item_free(efip);
} else {
efip->efi_flags |= XFS_EFI_COMMITTED;
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
}
@ -268,6 +262,7 @@ xfs_efi_init(xfs_mount_t *mp,
efip->efi_item.li_type = XFS_LI_EFI;
efip->efi_item.li_ops = &xfs_efi_item_ops;
efip->efi_item.li_mountp = mp;
efip->efi_item.li_ailp = mp->m_ail;
efip->efi_format.efi_nextents = nextents;
efip->efi_format.efi_id = (__psint_t)(void*)efip;
@ -345,25 +340,22 @@ void
xfs_efi_release(xfs_efi_log_item_t *efip,
uint nextents)
{
xfs_mount_t *mp;
int extents_left;
struct xfs_ail *ailp = efip->efi_item.li_ailp;
int extents_left;
mp = efip->efi_item.li_mountp;
ASSERT(efip->efi_next_extent > 0);
ASSERT(efip->efi_flags & XFS_EFI_COMMITTED);
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
ASSERT(efip->efi_next_extent >= nextents);
efip->efi_next_extent -= nextents;
extents_left = efip->efi_next_extent;
if (extents_left == 0) {
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
xfs_trans_delete_ail(mp, (xfs_log_item_t *)efip);
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, (xfs_log_item_t *)efip);
xfs_efi_item_free(efip);
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
}
@ -565,6 +557,7 @@ xfs_efd_init(xfs_mount_t *mp,
efdp->efd_item.li_type = XFS_LI_EFD;
efdp->efd_item.li_ops = &xfs_efd_item_ops;
efdp->efd_item.li_mountp = mp;
efdp->efd_item.li_ailp = mp->m_ail;
efdp->efd_efip = efip;
efdp->efd_format.efd_nextents = nextents;
efdp->efd_format.efd_efi_id = efip->efi_format.efi_id;

24
fs/xfs/xfs_fsops.c
Просмотреть файл

@ -126,7 +126,7 @@ xfs_growfs_data_private(
xfs_extlen_t agsize;
xfs_extlen_t tmpsize;
xfs_alloc_rec_t *arec;
xfs_btree_sblock_t *block;
struct xfs_btree_block *block;
xfs_buf_t *bp;
int bucket;
int dpct;
@ -251,14 +251,14 @@ xfs_growfs_data_private(
bp = xfs_buf_get(mp->m_ddev_targp,
XFS_AGB_TO_DADDR(mp, agno, XFS_BNO_BLOCK(mp)),
BTOBB(mp->m_sb.sb_blocksize), 0);
block = XFS_BUF_TO_SBLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
memset(block, 0, mp->m_sb.sb_blocksize);
block->bb_magic = cpu_to_be32(XFS_ABTB_MAGIC);
block->bb_level = 0;
block->bb_numrecs = cpu_to_be16(1);
block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
arec = XFS_BTREE_REC_ADDR(xfs_alloc, block, 1);
block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
arec = XFS_ALLOC_REC_ADDR(mp, block, 1);
arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
arec->ar_blockcount = cpu_to_be32(
agsize - be32_to_cpu(arec->ar_startblock));
@ -272,14 +272,14 @@ xfs_growfs_data_private(
bp = xfs_buf_get(mp->m_ddev_targp,
XFS_AGB_TO_DADDR(mp, agno, XFS_CNT_BLOCK(mp)),
BTOBB(mp->m_sb.sb_blocksize), 0);
block = XFS_BUF_TO_SBLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
memset(block, 0, mp->m_sb.sb_blocksize);
block->bb_magic = cpu_to_be32(XFS_ABTC_MAGIC);
block->bb_level = 0;
block->bb_numrecs = cpu_to_be16(1);
block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
arec = XFS_BTREE_REC_ADDR(xfs_alloc, block, 1);
block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
arec = XFS_ALLOC_REC_ADDR(mp, block, 1);
arec->ar_startblock = cpu_to_be32(XFS_PREALLOC_BLOCKS(mp));
arec->ar_blockcount = cpu_to_be32(
agsize - be32_to_cpu(arec->ar_startblock));
@ -294,13 +294,13 @@ xfs_growfs_data_private(
bp = xfs_buf_get(mp->m_ddev_targp,
XFS_AGB_TO_DADDR(mp, agno, XFS_IBT_BLOCK(mp)),
BTOBB(mp->m_sb.sb_blocksize), 0);
block = XFS_BUF_TO_SBLOCK(bp);
block = XFS_BUF_TO_BLOCK(bp);
memset(block, 0, mp->m_sb.sb_blocksize);
block->bb_magic = cpu_to_be32(XFS_IBT_MAGIC);
block->bb_level = 0;
block->bb_numrecs = 0;
block->bb_leftsib = cpu_to_be32(NULLAGBLOCK);
block->bb_rightsib = cpu_to_be32(NULLAGBLOCK);
block->bb_u.s.bb_leftsib = cpu_to_be32(NULLAGBLOCK);
block->bb_u.s.bb_rightsib = cpu_to_be32(NULLAGBLOCK);
error = xfs_bwrite(mp, bp);
if (error) {
goto error0;

132
fs/xfs/xfs_ialloc.c
Просмотреть файл

@ -118,6 +118,102 @@ xfs_ialloc_cluster_alignment(
return 1;
}
/*
* Lookup the record equal to ino in the btree given by cur.
*/
STATIC int /* error */
xfs_inobt_lookup_eq(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agino_t ino, /* starting inode of chunk */
__int32_t fcnt, /* free inode count */
xfs_inofree_t free, /* free inode mask */
int *stat) /* success/failure */
{
cur->bc_rec.i.ir_startino = ino;
cur->bc_rec.i.ir_freecount = fcnt;
cur->bc_rec.i.ir_free = free;
return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat);
}
/*
* Lookup the first record greater than or equal to ino
* in the btree given by cur.
*/
int /* error */
xfs_inobt_lookup_ge(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agino_t ino, /* starting inode of chunk */
__int32_t fcnt, /* free inode count */
xfs_inofree_t free, /* free inode mask */
int *stat) /* success/failure */
{
cur->bc_rec.i.ir_startino = ino;
cur->bc_rec.i.ir_freecount = fcnt;
cur->bc_rec.i.ir_free = free;
return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat);
}
/*
* Lookup the first record less than or equal to ino
* in the btree given by cur.
*/
int /* error */
xfs_inobt_lookup_le(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agino_t ino, /* starting inode of chunk */
__int32_t fcnt, /* free inode count */
xfs_inofree_t free, /* free inode mask */
int *stat) /* success/failure */
{
cur->bc_rec.i.ir_startino = ino;
cur->bc_rec.i.ir_freecount = fcnt;
cur->bc_rec.i.ir_free = free;
return xfs_btree_lookup(cur, XFS_LOOKUP_LE, stat);
}
/*
* Update the record referred to by cur to the value given
* by [ino, fcnt, free].
* This either works (return 0) or gets an EFSCORRUPTED error.
*/
STATIC int /* error */
xfs_inobt_update(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agino_t ino, /* starting inode of chunk */
__int32_t fcnt, /* free inode count */
xfs_inofree_t free) /* free inode mask */
{
union xfs_btree_rec rec;
rec.inobt.ir_startino = cpu_to_be32(ino);
rec.inobt.ir_freecount = cpu_to_be32(fcnt);
rec.inobt.ir_free = cpu_to_be64(free);
return xfs_btree_update(cur, &rec);
}
/*
* Get the data from the pointed-to record.
*/
int /* error */
xfs_inobt_get_rec(
struct xfs_btree_cur *cur, /* btree cursor */
xfs_agino_t *ino, /* output: starting inode of chunk */
__int32_t *fcnt, /* output: number of free inodes */
xfs_inofree_t *free, /* output: free inode mask */
int *stat) /* output: success/failure */
{
union xfs_btree_rec *rec;
int error;
error = xfs_btree_get_rec(cur, &rec, stat);
if (!error && *stat == 1) {
*ino = be32_to_cpu(rec->inobt.ir_startino);
*fcnt = be32_to_cpu(rec->inobt.ir_freecount);
*free = be64_to_cpu(rec->inobt.ir_free);
}
return error;
}
/*
* Allocate new inodes in the allocation group specified by agbp.
* Return 0 for success, else error code.
@ -335,8 +431,7 @@ xfs_ialloc_ag_alloc(
/*
* Insert records describing the new inode chunk into the btree.
*/
cur = xfs_btree_init_cursor(args.mp, tp, agbp, agno,
XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
cur = xfs_inobt_init_cursor(args.mp, tp, agbp, agno);
for (thisino = newino;
thisino < newino + newlen;
thisino += XFS_INODES_PER_CHUNK) {
@ -346,7 +441,7 @@ xfs_ialloc_ag_alloc(
return error;
}
ASSERT(i == 0);
if ((error = xfs_inobt_insert(cur, &i))) {
if ((error = xfs_btree_insert(cur, &i))) {
xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
return error;
}
@ -676,8 +771,7 @@ nextag:
*/
agno = tagno;
*IO_agbp = NULL;
cur = xfs_btree_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno),
XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
cur = xfs_inobt_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno));
/*
* If pagino is 0 (this is the root inode allocation) use newino.
* This must work because we've just allocated some.
@ -697,7 +791,7 @@ nextag:
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
freecount += rec.ir_freecount;
if ((error = xfs_inobt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto error0;
} while (i == 1);
@ -741,7 +835,7 @@ nextag:
/*
* Search left with tcur, back up 1 record.
*/
if ((error = xfs_inobt_decrement(tcur, 0, &i)))
if ((error = xfs_btree_decrement(tcur, 0, &i)))
goto error1;
doneleft = !i;
if (!doneleft) {
@ -755,7 +849,7 @@ nextag:
/*
* Search right with cur, go forward 1 record.
*/
if ((error = xfs_inobt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto error1;
doneright = !i;
if (!doneright) {
@ -817,7 +911,7 @@ nextag:
* further left.
*/
if (useleft) {
if ((error = xfs_inobt_decrement(tcur, 0,
if ((error = xfs_btree_decrement(tcur, 0,
&i)))
goto error1;
doneleft = !i;
@ -837,7 +931,7 @@ nextag:
* further right.
*/
else {
if ((error = xfs_inobt_increment(cur, 0,
if ((error = xfs_btree_increment(cur, 0,
&i)))
goto error1;
doneright = !i;
@ -892,7 +986,7 @@ nextag:
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
if (rec.ir_freecount > 0)
break;
if ((error = xfs_inobt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
}
@ -926,7 +1020,7 @@ nextag:
goto error0;
XFS_WANT_CORRUPTED_GOTO(i == 1, error0);
freecount += rec.ir_freecount;
if ((error = xfs_inobt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto error0;
} while (i == 1);
ASSERT(freecount == be32_to_cpu(agi->agi_freecount) ||
@ -1022,8 +1116,7 @@ xfs_difree(
/*
* Initialize the cursor.
*/
cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_INO,
(xfs_inode_t *)0, 0);
cur = xfs_inobt_init_cursor(mp, tp, agbp, agno);
#ifdef DEBUG
if (cur->bc_nlevels == 1) {
int freecount = 0;
@ -1036,7 +1129,7 @@ xfs_difree(
goto error0;
if (i) {
freecount += rec.ir_freecount;
if ((error = xfs_inobt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto error0;
}
} while (i == 1);
@ -1098,8 +1191,8 @@ xfs_difree(
xfs_trans_mod_sb(tp, XFS_TRANS_SB_ICOUNT, -ilen);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -(ilen - 1));
if ((error = xfs_inobt_delete(cur, &i))) {
cmn_err(CE_WARN, "xfs_difree: xfs_inobt_delete returned an error %d on %s.\n",
if ((error = xfs_btree_delete(cur, &i))) {
cmn_err(CE_WARN, "xfs_difree: xfs_btree_delete returned an error %d on %s.\n",
error, mp->m_fsname);
goto error0;
}
@ -1141,7 +1234,7 @@ xfs_difree(
goto error0;
if (i) {
freecount += rec.ir_freecount;
if ((error = xfs_inobt_increment(cur, 0, &i)))
if ((error = xfs_btree_increment(cur, 0, &i)))
goto error0;
}
} while (i == 1);
@ -1259,8 +1352,7 @@ xfs_dilocate(
#endif /* DEBUG */
return error;
}
cur = xfs_btree_init_cursor(mp, tp, agbp, agno, XFS_BTNUM_INO,
(xfs_inode_t *)0, 0);
cur = xfs_inobt_init_cursor(mp, tp, agbp, agno);
if ((error = xfs_inobt_lookup_le(cur, agino, 0, 0, &i))) {
#ifdef DEBUG
xfs_fs_cmn_err(CE_ALERT, mp, "xfs_dilocate: "

21
fs/xfs/xfs_ialloc.h
Просмотреть файл

@ -56,7 +56,6 @@ static inline int xfs_ialloc_find_free(xfs_inofree_t *fp)
}
#ifdef __KERNEL__
/*
* Allocate an inode on disk.
* Mode is used to tell whether the new inode will need space, and whether
@ -154,6 +153,24 @@ xfs_ialloc_pagi_init(
struct xfs_trans *tp, /* transaction pointer */
xfs_agnumber_t agno); /* allocation group number */
#endif /* __KERNEL__ */
/*
* Lookup the first record greater than or equal to ino
* in the btree given by cur.
*/
int xfs_inobt_lookup_ge(struct xfs_btree_cur *cur, xfs_agino_t ino,
__int32_t fcnt, xfs_inofree_t free, int *stat);
/*
* Lookup the first record less than or equal to ino
* in the btree given by cur.
*/
int xfs_inobt_lookup_le(struct xfs_btree_cur *cur, xfs_agino_t ino,
__int32_t fcnt, xfs_inofree_t free, int *stat);
/*
* Get the data from the pointed-to record.
*/
extern int xfs_inobt_get_rec(struct xfs_btree_cur *cur, xfs_agino_t *ino,
__int32_t *fcnt, xfs_inofree_t *free, int *stat);
#endif /* __XFS_IALLOC_H__ */

2273
fs/xfs/xfs_ialloc_btree.c
Просмотреть файл

Разница между файлами не показана из-за своего большого размера Загрузить разницу

107
fs/xfs/xfs_ialloc_btree.h
Просмотреть файл

@ -24,7 +24,6 @@
struct xfs_buf;
struct xfs_btree_cur;
struct xfs_btree_sblock;
struct xfs_mount;
/*
@ -70,11 +69,6 @@ typedef struct xfs_inobt_key {
/* btree pointer type */
typedef __be32 xfs_inobt_ptr_t;
/* btree block header type */
typedef struct xfs_btree_sblock xfs_inobt_block_t;
#define XFS_BUF_TO_INOBT_BLOCK(bp) ((xfs_inobt_block_t *)XFS_BUF_PTR(bp))
/*
* Bit manipulations for ir_free.
*/
@ -84,14 +78,6 @@ typedef struct xfs_btree_sblock xfs_inobt_block_t;
#define XFS_INOBT_SET_FREE(rp,i) ((rp)->ir_free |= XFS_INOBT_MASK(i))
#define XFS_INOBT_CLR_FREE(rp,i) ((rp)->ir_free &= ~XFS_INOBT_MASK(i))
/*
* Real block structures have a size equal to the disk block size.
*/
#define XFS_INOBT_BLOCK_MAXRECS(lev,cur) ((cur)->bc_mp->m_inobt_mxr[lev != 0])
#define XFS_INOBT_BLOCK_MINRECS(lev,cur) ((cur)->bc_mp->m_inobt_mnr[lev != 0])
#define XFS_INOBT_IS_LAST_REC(cur) \
((cur)->bc_ptrs[0] == be16_to_cpu(XFS_BUF_TO_INOBT_BLOCK((cur)->bc_bufs[0])->bb_numrecs))
/*
* Maximum number of inode btree levels.
*/
@ -103,76 +89,39 @@ typedef struct xfs_btree_sblock xfs_inobt_block_t;
#define XFS_IBT_BLOCK(mp) ((xfs_agblock_t)(XFS_CNT_BLOCK(mp) + 1))
#define XFS_PREALLOC_BLOCKS(mp) ((xfs_agblock_t)(XFS_IBT_BLOCK(mp) + 1))
/*
* Btree block header size depends on a superblock flag.
*
* (not quite yet, but soon)
*/
#define XFS_INOBT_BLOCK_LEN(mp) XFS_BTREE_SBLOCK_LEN
/*
* Record, key, and pointer address macros for btree blocks.
*
* (note that some of these may appear unused, but they are used in userspace)
*/
#define XFS_INOBT_REC_ADDR(bb,i,cur) \
(XFS_BTREE_REC_ADDR(xfs_inobt, bb, i))
#define XFS_INOBT_REC_ADDR(mp, block, index) \
((xfs_inobt_rec_t *) \
((char *)(block) + \
XFS_INOBT_BLOCK_LEN(mp) + \
(((index) - 1) * sizeof(xfs_inobt_rec_t))))
#define XFS_INOBT_KEY_ADDR(bb,i,cur) \
(XFS_BTREE_KEY_ADDR(xfs_inobt, bb, i))
#define XFS_INOBT_KEY_ADDR(mp, block, index) \
((xfs_inobt_key_t *) \
((char *)(block) + \
XFS_INOBT_BLOCK_LEN(mp) + \
((index) - 1) * sizeof(xfs_inobt_key_t)))
#define XFS_INOBT_PTR_ADDR(bb,i,cur) \
(XFS_BTREE_PTR_ADDR(xfs_inobt, bb, \
i, XFS_INOBT_BLOCK_MAXRECS(1, cur)))
#define XFS_INOBT_PTR_ADDR(mp, block, index, maxrecs) \
((xfs_inobt_ptr_t *) \
((char *)(block) + \
XFS_INOBT_BLOCK_LEN(mp) + \
(maxrecs) * sizeof(xfs_inobt_key_t) + \
((index) - 1) * sizeof(xfs_inobt_ptr_t)))
/*
* Decrement cursor by one record at the level.
* For nonzero levels the leaf-ward information is untouched.
*/
extern int xfs_inobt_decrement(struct xfs_btree_cur *cur, int level, int *stat);
/*
* Delete the record pointed to by cur.
* The cursor refers to the place where the record was (could be inserted)
* when the operation returns.
*/
extern int xfs_inobt_delete(struct xfs_btree_cur *cur, int *stat);
/*
* Get the data from the pointed-to record.
*/
extern int xfs_inobt_get_rec(struct xfs_btree_cur *cur, xfs_agino_t *ino,
__int32_t *fcnt, xfs_inofree_t *free, int *stat);
/*
* Increment cursor by one record at the level.
* For nonzero levels the leaf-ward information is untouched.
*/
extern int xfs_inobt_increment(struct xfs_btree_cur *cur, int level, int *stat);
/*
* Insert the current record at the point referenced by cur.
* The cursor may be inconsistent on return if splits have been done.
*/
extern int xfs_inobt_insert(struct xfs_btree_cur *cur, int *stat);
/*
* Lookup the record equal to ino in the btree given by cur.
*/
extern int xfs_inobt_lookup_eq(struct xfs_btree_cur *cur, xfs_agino_t ino,
__int32_t fcnt, xfs_inofree_t free, int *stat);
/*
* Lookup the first record greater than or equal to ino
* in the btree given by cur.
*/
extern int xfs_inobt_lookup_ge(struct xfs_btree_cur *cur, xfs_agino_t ino,
__int32_t fcnt, xfs_inofree_t free, int *stat);
/*
* Lookup the first record less than or equal to ino
* in the btree given by cur.
*/
extern int xfs_inobt_lookup_le(struct xfs_btree_cur *cur, xfs_agino_t ino,
__int32_t fcnt, xfs_inofree_t free, int *stat);
/*
* Update the record referred to by cur, to the value given
* by [ino, fcnt, free].
* This either works (return 0) or gets an EFSCORRUPTED error.
*/
extern int xfs_inobt_update(struct xfs_btree_cur *cur, xfs_agino_t ino,
__int32_t fcnt, xfs_inofree_t free);
extern struct xfs_btree_cur *xfs_inobt_init_cursor(struct xfs_mount *,
struct xfs_trans *, struct xfs_buf *, xfs_agnumber_t);
extern int xfs_inobt_maxrecs(struct xfs_mount *, int, int);
#endif /* __XFS_IALLOC_BTREE_H__ */

531
fs/xfs/xfs_iget.c
Просмотреть файл

@ -38,15 +38,193 @@
#include "xfs_ialloc.h"
#include "xfs_quota.h"
#include "xfs_utils.h"
#include "xfs_trans_priv.h"
#include "xfs_inode_item.h"
/*
* Check the validity of the inode we just found it the cache
*/
static int
xfs_iget_cache_hit(
struct xfs_perag *pag,
struct xfs_inode *ip,
int flags,
int lock_flags) __releases(pag->pag_ici_lock)
{
struct xfs_mount *mp = ip->i_mount;
int error = EAGAIN;
/*
* If INEW is set this inode is being set up
* If IRECLAIM is set this inode is being torn down
* Pause and try again.
*/
if (xfs_iflags_test(ip, (XFS_INEW|XFS_IRECLAIM))) {
XFS_STATS_INC(xs_ig_frecycle);
goto out_error;
}
/* If IRECLAIMABLE is set, we've torn down the vfs inode part */
if (xfs_iflags_test(ip, XFS_IRECLAIMABLE)) {
/*
* If lookup is racing with unlink, then we should return an
* error immediately so we don't remove it from the reclaim
* list and potentially leak the inode.
*/
if ((ip->i_d.di_mode == 0) && !(flags & XFS_IGET_CREATE)) {
error = ENOENT;
goto out_error;
}
xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
/*
* We need to re-initialise the VFS inode as it has been
* 'freed' by the VFS. Do this here so we can deal with
* errors cleanly, then tag it so it can be set up correctly
* later.
*/
if (!inode_init_always(mp->m_super, VFS_I(ip))) {
error = ENOMEM;
goto out_error;
}
/*
* We must set the XFS_INEW flag before clearing the
* XFS_IRECLAIMABLE flag so that if a racing lookup does
* not find the XFS_IRECLAIMABLE above but has the igrab()
* below succeed we can safely check XFS_INEW to detect
* that this inode is still being initialised.
*/
xfs_iflags_set(ip, XFS_INEW);
xfs_iflags_clear(ip, XFS_IRECLAIMABLE);
/* clear the radix tree reclaim flag as well. */
__xfs_inode_clear_reclaim_tag(mp, pag, ip);
} else if (!igrab(VFS_I(ip))) {
/* If the VFS inode is being torn down, pause and try again. */
XFS_STATS_INC(xs_ig_frecycle);
goto out_error;
} else if (xfs_iflags_test(ip, XFS_INEW)) {
/*
* We are racing with another cache hit that is
* currently recycling this inode out of the XFS_IRECLAIMABLE
* state. Wait for the initialisation to complete before
* continuing.
*/
wait_on_inode(VFS_I(ip));
}
if (ip->i_d.di_mode == 0 && !(flags & XFS_IGET_CREATE)) {
error = ENOENT;
iput(VFS_I(ip));
goto out_error;
}
/* We've got a live one. */
read_unlock(&pag->pag_ici_lock);
if (lock_flags != 0)
xfs_ilock(ip, lock_flags);
xfs_iflags_clear(ip, XFS_ISTALE);
xfs_itrace_exit_tag(ip, "xfs_iget.found");
XFS_STATS_INC(xs_ig_found);
return 0;
out_error:
read_unlock(&pag->pag_ici_lock);
return error;
}
static int
xfs_iget_cache_miss(
struct xfs_mount *mp,
struct xfs_perag *pag,
xfs_trans_t *tp,
xfs_ino_t ino,
struct xfs_inode **ipp,
xfs_daddr_t bno,
int flags,
int lock_flags) __releases(pag->pag_ici_lock)
{
struct xfs_inode *ip;
int error;
unsigned long first_index, mask;
xfs_agino_t agino = XFS_INO_TO_AGINO(mp, ino);
/*
* Read the disk inode attributes into a new inode structure and get
* a new vnode for it. This should also initialize i_ino and i_mount.
*/
error = xfs_iread(mp, tp, ino, &ip, bno,
(flags & XFS_IGET_BULKSTAT) ? XFS_IMAP_BULKSTAT : 0);
if (error)
return error;
xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
if ((ip->i_d.di_mode == 0) && !(flags & XFS_IGET_CREATE)) {
error = ENOENT;
goto out_destroy;
}
if (lock_flags)
xfs_ilock(ip, lock_flags);
/*
* Preload the radix tree so we can insert safely under the
* write spinlock. Note that we cannot sleep inside the preload
* region.
*/
if (radix_tree_preload(GFP_KERNEL)) {
error = EAGAIN;
goto out_unlock;
}
mask = ~(((XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog)) - 1);
first_index = agino & mask;
write_lock(&pag->pag_ici_lock);
/* insert the new inode */
error = radix_tree_insert(&pag->pag_ici_root, agino, ip);
if (unlikely(error)) {
WARN_ON(error != -EEXIST);
XFS_STATS_INC(xs_ig_dup);
error = EAGAIN;
goto out_preload_end;
}
/* These values _must_ be set before releasing the radix tree lock! */
ip->i_udquot = ip->i_gdquot = NULL;
xfs_iflags_set(ip, XFS_INEW);
write_unlock(&pag->pag_ici_lock);
radix_tree_preload_end();
*ipp = ip;
return 0;
out_preload_end:
write_unlock(&pag->pag_ici_lock);
radix_tree_preload_end();
out_unlock:
if (lock_flags)
xfs_iunlock(ip, lock_flags);
out_destroy:
xfs_destroy_inode(ip);
return error;
}
/*
* Look up an inode by number in the given file system.
* The inode is looked up in the cache held in each AG.
* If the inode is found in the cache, attach it to the provided
* vnode.
* If the inode is found in the cache, initialise the vfs inode
* if necessary.
*
* If it is not in core, read it in from the file system's device,
* add it to the cache and attach the provided vnode.
* add it to the cache and initialise the vfs inode.
*
* The inode is locked according to the value of the lock_flags parameter.
* This flag parameter indicates how and if the inode's IO lock and inode lock
@ -63,9 +241,8 @@
* bno -- the block number starting the buffer containing the inode,
* if known (as by bulkstat), else 0.
*/
STATIC int
xfs_iget_core(
struct inode *inode,
int
xfs_iget(
xfs_mount_t *mp,
xfs_trans_t *tp,
xfs_ino_t ino,
@ -74,11 +251,8 @@ xfs_iget_core(
xfs_inode_t **ipp,
xfs_daddr_t bno)
{
struct inode *old_inode;
xfs_inode_t *ip;
xfs_inode_t *iq;
int error;
unsigned long first_index, mask;
xfs_perag_t *pag;
xfs_agino_t agino;
@ -94,291 +268,48 @@ xfs_iget_core(
agino = XFS_INO_TO_AGINO(mp, ino);
again:
error = 0;
read_lock(&pag->pag_ici_lock);
ip = radix_tree_lookup(&pag->pag_ici_root, agino);
if (ip != NULL) {
/*
* If INEW is set this inode is being set up
* we need to pause and try again.
*/
if (xfs_iflags_test(ip, XFS_INEW)) {
read_unlock(&pag->pag_ici_lock);
delay(1);
XFS_STATS_INC(xs_ig_frecycle);
goto again;
}
old_inode = ip->i_vnode;
if (old_inode == NULL) {
/*
* If IRECLAIM is set this inode is
* on its way out of the system,
* we need to pause and try again.
*/
if (xfs_iflags_test(ip, XFS_IRECLAIM)) {
read_unlock(&pag->pag_ici_lock);
delay(1);
XFS_STATS_INC(xs_ig_frecycle);
goto again;
}
ASSERT(xfs_iflags_test(ip, XFS_IRECLAIMABLE));
/*
* If lookup is racing with unlink, then we
* should return an error immediately so we
* don't remove it from the reclaim list and
* potentially leak the inode.
*/
if ((ip->i_d.di_mode == 0) &&
!(flags & XFS_IGET_CREATE)) {
read_unlock(&pag->pag_ici_lock);
xfs_put_perag(mp, pag);
return ENOENT;
}
xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
XFS_STATS_INC(xs_ig_found);
xfs_iflags_clear(ip, XFS_IRECLAIMABLE);
read_unlock(&pag->pag_ici_lock);
XFS_MOUNT_ILOCK(mp);
list_del_init(&ip->i_reclaim);
XFS_MOUNT_IUNLOCK(mp);
goto finish_inode;
} else if (inode != old_inode) {
/* The inode is being torn down, pause and
* try again.
*/
if (old_inode->i_state & (I_FREEING | I_CLEAR)) {
read_unlock(&pag->pag_ici_lock);
delay(1);
XFS_STATS_INC(xs_ig_frecycle);
goto again;
}
/* Chances are the other vnode (the one in the inode) is being torn
* down right now, and we landed on top of it. Question is, what do
* we do? Unhook the old inode and hook up the new one?
*/
cmn_err(CE_PANIC,
"xfs_iget_core: ambiguous vns: vp/0x%p, invp/0x%p",
old_inode, inode);
}
/*
* Inode cache hit
*/
read_unlock(&pag->pag_ici_lock);
XFS_STATS_INC(xs_ig_found);
finish_inode:
if (ip->i_d.di_mode == 0 && !(flags & XFS_IGET_CREATE)) {
xfs_put_perag(mp, pag);
return ENOENT;
}
if (lock_flags != 0)
xfs_ilock(ip, lock_flags);
xfs_iflags_clear(ip, XFS_ISTALE);
xfs_itrace_exit_tag(ip, "xfs_iget.found");
goto return_ip;
}
/*
* Inode cache miss
*/
read_unlock(&pag->pag_ici_lock);
XFS_STATS_INC(xs_ig_missed);
/*
* Read the disk inode attributes into a new inode structure and get
* a new vnode for it. This should also initialize i_ino and i_mount.
*/
error = xfs_iread(mp, tp, ino, &ip, bno,
(flags & XFS_IGET_BULKSTAT) ? XFS_IMAP_BULKSTAT : 0);
if (error) {
xfs_put_perag(mp, pag);
return error;
}
xfs_itrace_exit_tag(ip, "xfs_iget.alloc");
mrlock_init(&ip->i_lock, MRLOCK_ALLOW_EQUAL_PRI|MRLOCK_BARRIER,
"xfsino", ip->i_ino);
mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino);
init_waitqueue_head(&ip->i_ipin_wait);
atomic_set(&ip->i_pincount, 0);
/*
* Because we want to use a counting completion, complete
* the flush completion once to allow a single access to
* the flush completion without blocking.
*/
init_completion(&ip->i_flush);
complete(&ip->i_flush);
if (lock_flags)
xfs_ilock(ip, lock_flags);
if ((ip->i_d.di_mode == 0) && !(flags & XFS_IGET_CREATE)) {
xfs_idestroy(ip);
xfs_put_perag(mp, pag);
return ENOENT;
}
/*
* Preload the radix tree so we can insert safely under the
* write spinlock.
*/
if (radix_tree_preload(GFP_KERNEL)) {
xfs_idestroy(ip);
delay(1);
goto again;
}
mask = ~(((XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog)) - 1);
first_index = agino & mask;
write_lock(&pag->pag_ici_lock);
/*
* insert the new inode
*/
error = radix_tree_insert(&pag->pag_ici_root, agino, ip);
if (unlikely(error)) {
BUG_ON(error != -EEXIST);
write_unlock(&pag->pag_ici_lock);
radix_tree_preload_end();
xfs_idestroy(ip);
XFS_STATS_INC(xs_ig_dup);
goto again;
}
/*
* These values _must_ be set before releasing the radix tree lock!
*/
ip->i_udquot = ip->i_gdquot = NULL;
xfs_iflags_set(ip, XFS_INEW);
write_unlock(&pag->pag_ici_lock);
radix_tree_preload_end();
/*
* Link ip to its mount and thread it on the mount's inode list.
*/
XFS_MOUNT_ILOCK(mp);
if ((iq = mp->m_inodes)) {
ASSERT(iq->i_mprev->i_mnext == iq);
ip->i_mprev = iq->i_mprev;
iq->i_mprev->i_mnext = ip;
iq->i_mprev = ip;
ip->i_mnext = iq;
if (ip) {
error = xfs_iget_cache_hit(pag, ip, flags, lock_flags);
if (error)
goto out_error_or_again;
} else {
ip->i_mnext = ip;
ip->i_mprev = ip;
read_unlock(&pag->pag_ici_lock);
XFS_STATS_INC(xs_ig_missed);
error = xfs_iget_cache_miss(mp, pag, tp, ino, &ip, bno,
flags, lock_flags);
if (error)
goto out_error_or_again;
}
mp->m_inodes = ip;
XFS_MOUNT_IUNLOCK(mp);
xfs_put_perag(mp, pag);
return_ip:
ASSERT(ip->i_df.if_ext_max ==
XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t));
xfs_iflags_set(ip, XFS_IMODIFIED);
*ipp = ip;
/*
* Set up the Linux with the Linux inode.
*/
ip->i_vnode = inode;
inode->i_private = ip;
ASSERT(ip->i_df.if_ext_max ==
XFS_IFORK_DSIZE(ip) / sizeof(xfs_bmbt_rec_t));
/*
* If we have a real type for an on-disk inode, we can set ops(&unlock)
* now. If it's a new inode being created, xfs_ialloc will handle it.
*/
if (ip->i_d.di_mode != 0)
if (xfs_iflags_test(ip, XFS_INEW) && ip->i_d.di_mode != 0)
xfs_setup_inode(ip);
return 0;
out_error_or_again:
if (error == EAGAIN) {
delay(1);
goto again;
}
xfs_put_perag(mp, pag);
return error;
}
/*
* The 'normal' internal xfs_iget, if needed it will
* 'allocate', or 'get', the vnode.
*/
int
xfs_iget(
xfs_mount_t *mp,
xfs_trans_t *tp,
xfs_ino_t ino,
uint flags,
uint lock_flags,
xfs_inode_t **ipp,
xfs_daddr_t bno)
{
struct inode *inode;
xfs_inode_t *ip;
int error;
XFS_STATS_INC(xs_ig_attempts);
retry:
inode = iget_locked(mp->m_super, ino);
if (!inode)
/* If we got no inode we are out of memory */
return ENOMEM;
if (inode->i_state & I_NEW) {
XFS_STATS_INC(vn_active);
XFS_STATS_INC(vn_alloc);
error = xfs_iget_core(inode, mp, tp, ino, flags,
lock_flags, ipp, bno);
if (error) {
make_bad_inode(inode);
if (inode->i_state & I_NEW)
unlock_new_inode(inode);
iput(inode);
}
return error;
}
/*
* If the inode is not fully constructed due to
* filehandle mismatches wait for the inode to go
* away and try again.
*
* iget_locked will call __wait_on_freeing_inode
* to wait for the inode to go away.
*/
if (is_bad_inode(inode)) {
iput(inode);
delay(1);
goto retry;
}
ip = XFS_I(inode);
if (!ip) {
iput(inode);
delay(1);
goto retry;
}
if (lock_flags != 0)
xfs_ilock(ip, lock_flags);
XFS_STATS_INC(xs_ig_found);
*ipp = ip;
return 0;
}
/*
* Look for the inode corresponding to the given ino in the hash table.
* If it is there and its i_transp pointer matches tp, return it.
@ -462,14 +393,13 @@ xfs_ireclaim(xfs_inode_t *ip)
xfs_iextract(ip);
/*
* Here we do a spurious inode lock in order to coordinate with
* xfs_sync(). This is because xfs_sync() references the inodes
* in the mount list without taking references on the corresponding
* vnodes. We make that OK here by ensuring that we wait until
* the inode is unlocked in xfs_sync() before we go ahead and
* free it. We get both the regular lock and the io lock because
* the xfs_sync() code may need to drop the regular one but will
* still hold the io lock.
* Here we do a spurious inode lock in order to coordinate with inode
* cache radix tree lookups. This is because the lookup can reference
* the inodes in the cache without taking references. We make that OK
* here by ensuring that we wait until the inode is unlocked after the
* lookup before we go ahead and free it. We get both the ilock and
* the iolock because the code may need to drop the ilock one but will
* still hold the iolock.
*/
xfs_ilock(ip, XFS_ILOCK_EXCL | XFS_IOLOCK_EXCL);
@ -479,14 +409,6 @@ xfs_ireclaim(xfs_inode_t *ip)
*/
XFS_QM_DQDETACH(ip->i_mount, ip);
/*
* Pull our behavior descriptor from the vnode chain.
*/
if (ip->i_vnode) {
ip->i_vnode->i_private = NULL;
ip->i_vnode = NULL;
}
/*
* Free all memory associated with the inode.
*/
@ -505,38 +427,13 @@ xfs_iextract(
{
xfs_mount_t *mp = ip->i_mount;
xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
xfs_inode_t *iq;
write_lock(&pag->pag_ici_lock);
radix_tree_delete(&pag->pag_ici_root, XFS_INO_TO_AGINO(mp, ip->i_ino));
write_unlock(&pag->pag_ici_lock);
xfs_put_perag(mp, pag);
/*
* Remove from mount's inode list.
*/
XFS_MOUNT_ILOCK(mp);
ASSERT((ip->i_mnext != NULL) && (ip->i_mprev != NULL));
iq = ip->i_mnext;
iq->i_mprev = ip->i_mprev;
ip->i_mprev->i_mnext = iq;
/*
* Fix up the head pointer if it points to the inode being deleted.
*/
if (mp->m_inodes == ip) {
if (ip == iq) {
mp->m_inodes = NULL;
} else {
mp->m_inodes = iq;
}
}
/* Deal with the deleted inodes list */
list_del_init(&ip->i_reclaim);
mp->m_ireclaims++;
XFS_MOUNT_IUNLOCK(mp);
}
/*
@ -737,7 +634,7 @@ xfs_iunlock(
* it is in the AIL and anyone is waiting on it. Don't do
* this if the caller has asked us not to.
*/
xfs_trans_unlocked_item(ip->i_mount,
xfs_trans_unlocked_item(ip->i_itemp->ili_item.li_ailp,
(xfs_log_item_t*)(ip->i_itemp));
}
xfs_ilock_trace(ip, 3, lock_flags, (inst_t *)__return_address);

2
fs/xfs/xfs_imap.h
Просмотреть файл

@ -30,11 +30,9 @@ typedef struct xfs_imap {
ushort im_boffset; /* inode offset in block in bytes */
} xfs_imap_t;
#ifdef __KERNEL__
struct xfs_mount;
struct xfs_trans;
int xfs_imap(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
xfs_imap_t *, uint);
#endif
#endif /* __XFS_IMAP_H__ */

292
fs/xfs/xfs_inode.c
Просмотреть файл

@ -41,6 +41,7 @@
#include "xfs_buf_item.h"
#include "xfs_inode_item.h"
#include "xfs_btree.h"
#include "xfs_btree_trace.h"
#include "xfs_alloc.h"
#include "xfs_ialloc.h"
#include "xfs_bmap.h"
@ -221,25 +222,26 @@ xfs_imap_to_bp(
* Use xfs_imap() to determine the size and location of the
* buffer to read from disk.
*/
STATIC int
int
xfs_inotobp(
xfs_mount_t *mp,
xfs_trans_t *tp,
xfs_ino_t ino,
xfs_dinode_t **dipp,
xfs_buf_t **bpp,
int *offset)
int *offset,
uint imap_flags)
{
xfs_imap_t imap;
xfs_buf_t *bp;
int error;
imap.im_blkno = 0;
error = xfs_imap(mp, tp, ino, &imap, XFS_IMAP_LOOKUP);
error = xfs_imap(mp, tp, ino, &imap, imap_flags | XFS_IMAP_LOOKUP);
if (error)
return error;
error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, 0);
error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, imap_flags);
if (error)
return error;
@ -621,7 +623,7 @@ xfs_iformat_btree(
ifp = XFS_IFORK_PTR(ip, whichfork);
dfp = (xfs_bmdr_block_t *)XFS_DFORK_PTR(dip, whichfork);
size = XFS_BMAP_BROOT_SPACE(dfp);
nrecs = XFS_BMAP_BROOT_NUMRECS(dfp);
nrecs = be16_to_cpu(dfp->bb_numrecs);
/*
* blow out if -- fork has less extents than can fit in
@ -649,8 +651,9 @@ xfs_iformat_btree(
* Copy and convert from the on-disk structure
* to the in-memory structure.
*/
xfs_bmdr_to_bmbt(dfp, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork),
ifp->if_broot, size);
xfs_bmdr_to_bmbt(ip->i_mount, dfp,
XFS_DFORK_SIZE(dip, ip->i_mount, whichfork),
ifp->if_broot, size);
ifp->if_flags &= ~XFS_IFEXTENTS;
ifp->if_flags |= XFS_IFBROOT;
@ -787,6 +790,80 @@ xfs_dic2xflags(
(XFS_DFORK_Q(dip) ? XFS_XFLAG_HASATTR : 0);
}
/*
* Allocate and initialise an xfs_inode.
*/
STATIC struct xfs_inode *
xfs_inode_alloc(
struct xfs_mount *mp,
xfs_ino_t ino)
{
struct xfs_inode *ip;
/*
* if this didn't occur in transactions, we could use
* KM_MAYFAIL and return NULL here on ENOMEM. Set the
* code up to do this anyway.
*/
ip = kmem_zone_alloc(xfs_inode_zone, KM_SLEEP);
if (!ip)
return NULL;
ASSERT(atomic_read(&ip->i_iocount) == 0);
ASSERT(atomic_read(&ip->i_pincount) == 0);
ASSERT(!spin_is_locked(&ip->i_flags_lock));
ASSERT(completion_done(&ip->i_flush));
/*
* initialise the VFS inode here to get failures
* out of the way early.
*/
if (!inode_init_always(mp->m_super, VFS_I(ip))) {
kmem_zone_free(xfs_inode_zone, ip);
return NULL;
}
/* initialise the xfs inode */
ip->i_ino = ino;
ip->i_mount = mp;
ip->i_blkno = 0;
ip->i_len = 0;
ip->i_boffset =0;
ip->i_afp = NULL;
memset(&ip->i_df, 0, sizeof(xfs_ifork_t));
ip->i_flags = 0;
ip->i_update_core = 0;
ip->i_update_size = 0;
ip->i_delayed_blks = 0;
memset(&ip->i_d, 0, sizeof(xfs_icdinode_t));
ip->i_size = 0;
ip->i_new_size = 0;
/*
* Initialize inode's trace buffers.
*/
#ifdef XFS_INODE_TRACE
ip->i_trace = ktrace_alloc(INODE_TRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_BMAP_TRACE
ip->i_xtrace = ktrace_alloc(XFS_BMAP_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_BTREE_TRACE
ip->i_btrace = ktrace_alloc(XFS_BMBT_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_RW_TRACE
ip->i_rwtrace = ktrace_alloc(XFS_RW_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_ILOCK_TRACE
ip->i_lock_trace = ktrace_alloc(XFS_ILOCK_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_DIR2_TRACE
ip->i_dir_trace = ktrace_alloc(XFS_DIR2_KTRACE_SIZE, KM_NOFS);
#endif
return ip;
}
/*
* Given a mount structure and an inode number, return a pointer
* to a newly allocated in-core inode corresponding to the given
@ -809,13 +886,9 @@ xfs_iread(
xfs_inode_t *ip;
int error;
ASSERT(xfs_inode_zone != NULL);
ip = kmem_zone_zalloc(xfs_inode_zone, KM_SLEEP);
ip->i_ino = ino;
ip->i_mount = mp;
atomic_set(&ip->i_iocount, 0);
spin_lock_init(&ip->i_flags_lock);
ip = xfs_inode_alloc(mp, ino);
if (!ip)
return ENOMEM;
/*
* Get pointer's to the on-disk inode and the buffer containing it.
@ -825,41 +898,14 @@ xfs_iread(
* know that this is a new incore inode.
*/
error = xfs_itobp(mp, tp, ip, &dip, &bp, bno, imap_flags, XFS_BUF_LOCK);
if (error) {
kmem_zone_free(xfs_inode_zone, ip);
return error;
}
/*
* Initialize inode's trace buffers.
* Do this before xfs_iformat in case it adds entries.
*/
#ifdef XFS_INODE_TRACE
ip->i_trace = ktrace_alloc(INODE_TRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_BMAP_TRACE
ip->i_xtrace = ktrace_alloc(XFS_BMAP_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_BMBT_TRACE
ip->i_btrace = ktrace_alloc(XFS_BMBT_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_RW_TRACE
ip->i_rwtrace = ktrace_alloc(XFS_RW_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_ILOCK_TRACE
ip->i_lock_trace = ktrace_alloc(XFS_ILOCK_KTRACE_SIZE, KM_NOFS);
#endif
#ifdef XFS_DIR2_TRACE
ip->i_dir_trace = ktrace_alloc(XFS_DIR2_KTRACE_SIZE, KM_NOFS);
#endif
if (error)
goto out_destroy_inode;
/*
* If we got something that isn't an inode it means someone
* (nfs or dmi) has a stale handle.
*/
if (be16_to_cpu(dip->di_core.di_magic) != XFS_DINODE_MAGIC) {
kmem_zone_free(xfs_inode_zone, ip);
xfs_trans_brelse(tp, bp);
#ifdef DEBUG
xfs_fs_cmn_err(CE_ALERT, mp, "xfs_iread: "
"dip->di_core.di_magic (0x%x) != "
@ -867,7 +913,8 @@ xfs_iread(
be16_to_cpu(dip->di_core.di_magic),
XFS_DINODE_MAGIC);
#endif /* DEBUG */
return XFS_ERROR(EINVAL);
error = XFS_ERROR(EINVAL);
goto out_brelse;
}
/*
@ -881,14 +928,12 @@ xfs_iread(
xfs_dinode_from_disk(&ip->i_d, &dip->di_core);
error = xfs_iformat(ip, dip);
if (error) {
kmem_zone_free(xfs_inode_zone, ip);
xfs_trans_brelse(tp, bp);
#ifdef DEBUG
xfs_fs_cmn_err(CE_ALERT, mp, "xfs_iread: "
"xfs_iformat() returned error %d",
error);
#endif /* DEBUG */
return error;
goto out_brelse;
}
} else {
ip->i_d.di_magic = be16_to_cpu(dip->di_core.di_magic);
@ -911,8 +956,6 @@ xfs_iread(
XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t);
}
INIT_LIST_HEAD(&ip->i_reclaim);
/*
* The inode format changed when we moved the link count and
* made it 32 bits long. If this is an old format inode,
@ -956,6 +999,12 @@ xfs_iread(
xfs_trans_brelse(tp, bp);
*ipp = ip;
return 0;
out_brelse:
xfs_trans_brelse(tp, bp);
out_destroy_inode:
xfs_destroy_inode(ip);
return error;
}
/*
@ -1049,6 +1098,7 @@ xfs_ialloc(
uint flags;
int error;
timespec_t tv;
int filestreams = 0;
/*
* Call the space management code to pick
@ -1056,9 +1106,8 @@ xfs_ialloc(
*/
error = xfs_dialloc(tp, pip ? pip->i_ino : 0, mode, okalloc,
ialloc_context, call_again, &ino);
if (error != 0) {
if (error)
return error;
}
if (*call_again || ino == NULLFSINO) {
*ipp = NULL;
return 0;
@ -1072,9 +1121,8 @@ xfs_ialloc(
*/
error = xfs_trans_iget(tp->t_mountp, tp, ino,
XFS_IGET_CREATE, XFS_ILOCK_EXCL, &ip);
if (error != 0) {
if (error)
return error;
}
ASSERT(ip != NULL);
ip->i_d.di_mode = (__uint16_t)mode;
@ -1155,13 +1203,12 @@ xfs_ialloc(
flags |= XFS_ILOG_DEV;
break;
case S_IFREG:
if (pip && xfs_inode_is_filestream(pip)) {
error = xfs_filestream_associate(pip, ip);
if (error < 0)
return -error;
if (!error)
xfs_iflags_set(ip, XFS_IFILESTREAM);
}
/*
* we can't set up filestreams until after the VFS inode
* is set up properly.
*/
if (pip && xfs_inode_is_filestream(pip))
filestreams = 1;
/* fall through */
case S_IFDIR:
if (pip && (pip->i_d.di_flags & XFS_DIFLAG_ANY)) {
@ -1227,6 +1274,15 @@ xfs_ialloc(
/* now that we have an i_mode we can setup inode ops and unlock */
xfs_setup_inode(ip);
/* now we have set up the vfs inode we can associate the filestream */
if (filestreams) {
error = xfs_filestream_associate(pip, ip);
if (error < 0)
return -error;
if (!error)
xfs_iflags_set(ip, XFS_IFILESTREAM);
}
*ipp = ip;
return 0;
}
@ -1414,7 +1470,7 @@ xfs_itruncate_start(
mp = ip->i_mount;
/* wait for the completion of any pending DIOs */
if (new_size < ip->i_size)
if (new_size == 0 || new_size < ip->i_size)
vn_iowait(ip);
/*
@ -1992,7 +2048,7 @@ xfs_iunlink_remove(
}
next_ino = XFS_AGINO_TO_INO(mp, agno, next_agino);
error = xfs_inotobp(mp, tp, next_ino, &last_dip,
&last_ibp, &last_offset);
&last_ibp, &last_offset, 0);
if (error) {
cmn_err(CE_WARN,
"xfs_iunlink_remove: xfs_inotobp() returned an error %d on %s. Returning error.",
@ -2160,9 +2216,9 @@ xfs_ifree_cluster(
iip = (xfs_inode_log_item_t *)lip;
ASSERT(iip->ili_logged == 1);
lip->li_cb = (void(*)(xfs_buf_t*,xfs_log_item_t*)) xfs_istale_done;
spin_lock(&mp->m_ail_lock);
iip->ili_flush_lsn = iip->ili_item.li_lsn;
spin_unlock(&mp->m_ail_lock);
xfs_trans_ail_copy_lsn(mp->m_ail,
&iip->ili_flush_lsn,
&iip->ili_item.li_lsn);
xfs_iflags_set(iip->ili_inode, XFS_ISTALE);
pre_flushed++;
}
@ -2183,9 +2239,8 @@ xfs_ifree_cluster(
iip->ili_last_fields = iip->ili_format.ilf_fields;
iip->ili_format.ilf_fields = 0;
iip->ili_logged = 1;
spin_lock(&mp->m_ail_lock);
iip->ili_flush_lsn = iip->ili_item.li_lsn;
spin_unlock(&mp->m_ail_lock);
xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,
&iip->ili_item.li_lsn);
xfs_buf_attach_iodone(bp,
(void(*)(xfs_buf_t*,xfs_log_item_t*))
@ -2312,9 +2367,10 @@ xfs_iroot_realloc(
int rec_diff,
int whichfork)
{
struct xfs_mount *mp = ip->i_mount;
int cur_max;
xfs_ifork_t *ifp;
xfs_bmbt_block_t *new_broot;
struct xfs_btree_block *new_broot;
int new_max;
size_t new_size;
char *np;
@ -2335,8 +2391,7 @@ xfs_iroot_realloc(
*/
if (ifp->if_broot_bytes == 0) {
new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(rec_diff);
ifp->if_broot = (xfs_bmbt_block_t*)kmem_alloc(new_size,
KM_SLEEP);
ifp->if_broot = kmem_alloc(new_size, KM_SLEEP);
ifp->if_broot_bytes = (int)new_size;
return;
}
@ -2347,18 +2402,16 @@ xfs_iroot_realloc(
* location. The records don't change location because
* they are kept butted up against the btree block header.
*/
cur_max = XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes);
cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0);
new_max = cur_max + rec_diff;
new_size = (size_t)XFS_BMAP_BROOT_SPACE_CALC(new_max);
ifp->if_broot = (xfs_bmbt_block_t *)
kmem_realloc(ifp->if_broot,
new_size,
ifp->if_broot = kmem_realloc(ifp->if_broot, new_size,
(size_t)XFS_BMAP_BROOT_SPACE_CALC(cur_max), /* old size */
KM_SLEEP);
op = (char *)XFS_BMAP_BROOT_PTR_ADDR(ifp->if_broot, 1,
ifp->if_broot_bytes);
np = (char *)XFS_BMAP_BROOT_PTR_ADDR(ifp->if_broot, 1,
(int)new_size);
op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1,
ifp->if_broot_bytes);
np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1,
(int)new_size);
ifp->if_broot_bytes = (int)new_size;
ASSERT(ifp->if_broot_bytes <=
XFS_IFORK_SIZE(ip, whichfork) + XFS_BROOT_SIZE_ADJ);
@ -2372,7 +2425,7 @@ xfs_iroot_realloc(
* records, just get rid of the root and clear the status bit.
*/
ASSERT((ifp->if_broot != NULL) && (ifp->if_broot_bytes > 0));
cur_max = XFS_BMAP_BROOT_MAXRECS(ifp->if_broot_bytes);
cur_max = xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0);
new_max = cur_max + rec_diff;
ASSERT(new_max >= 0);
if (new_max > 0)
@ -2380,11 +2433,11 @@ xfs_iroot_realloc(
else
new_size = 0;
if (new_size > 0) {
new_broot = (xfs_bmbt_block_t *)kmem_alloc(new_size, KM_SLEEP);
new_broot = kmem_alloc(new_size, KM_SLEEP);
/*
* First copy over the btree block header.
*/
memcpy(new_broot, ifp->if_broot, sizeof(xfs_bmbt_block_t));
memcpy(new_broot, ifp->if_broot, XFS_BTREE_LBLOCK_LEN);
} else {
new_broot = NULL;
ifp->if_flags &= ~XFS_IFBROOT;
@ -2397,18 +2450,16 @@ xfs_iroot_realloc(
/*
* First copy the records.
*/
op = (char *)XFS_BMAP_BROOT_REC_ADDR(ifp->if_broot, 1,
ifp->if_broot_bytes);
np = (char *)XFS_BMAP_BROOT_REC_ADDR(new_broot, 1,
(int)new_size);
op = (char *)XFS_BMBT_REC_ADDR(mp, ifp->if_broot, 1);
np = (char *)XFS_BMBT_REC_ADDR(mp, new_broot, 1);
memcpy(np, op, new_max * (uint)sizeof(xfs_bmbt_rec_t));
/*
* Then copy the pointers.
*/
op = (char *)XFS_BMAP_BROOT_PTR_ADDR(ifp->if_broot, 1,
op = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, ifp->if_broot, 1,
ifp->if_broot_bytes);
np = (char *)XFS_BMAP_BROOT_PTR_ADDR(new_broot, 1,
np = (char *)XFS_BMAP_BROOT_PTR_ADDR(mp, new_broot, 1,
(int)new_size);
memcpy(np, op, new_max * (uint)sizeof(xfs_dfsbno_t));
}
@ -2617,6 +2668,10 @@ xfs_idestroy_fork(
* It must free the inode itself and any buffers allocated for
* if_extents/if_data and if_broot. It must also free the lock
* associated with the inode.
*
* Note: because we don't initialise everything on reallocation out
* of the zone, we must ensure we nullify everything correctly before
* freeing the structure.
*/
void
xfs_idestroy(
@ -2631,8 +2686,6 @@ xfs_idestroy(
}
if (ip->i_afp)
xfs_idestroy_fork(ip, XFS_ATTR_FORK);
mrfree(&ip->i_lock);
mrfree(&ip->i_iolock);
#ifdef XFS_INODE_TRACE
ktrace_free(ip->i_trace);
@ -2640,7 +2693,7 @@ xfs_idestroy(
#ifdef XFS_BMAP_TRACE
ktrace_free(ip->i_xtrace);
#endif
#ifdef XFS_BMBT_TRACE
#ifdef XFS_BTREE_TRACE
ktrace_free(ip->i_btrace);
#endif
#ifdef XFS_RW_TRACE
@ -2658,20 +2711,26 @@ xfs_idestroy(
* inode still in the AIL. If it is there, we should remove
* it to prevent a use-after-free from occurring.
*/
xfs_mount_t *mp = ip->i_mount;
xfs_log_item_t *lip = &ip->i_itemp->ili_item;
struct xfs_ail *ailp = lip->li_ailp;
ASSERT(((lip->li_flags & XFS_LI_IN_AIL) == 0) ||
XFS_FORCED_SHUTDOWN(ip->i_mount));
if (lip->li_flags & XFS_LI_IN_AIL) {
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
if (lip->li_flags & XFS_LI_IN_AIL)
xfs_trans_delete_ail(mp, lip);
xfs_trans_ail_delete(ailp, lip);
else
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
xfs_inode_item_destroy(ip);
ip->i_itemp = NULL;
}
/* asserts to verify all state is correct here */
ASSERT(atomic_read(&ip->i_iocount) == 0);
ASSERT(atomic_read(&ip->i_pincount) == 0);
ASSERT(!spin_is_locked(&ip->i_flags_lock));
ASSERT(completion_done(&ip->i_flush));
kmem_zone_free(xfs_inode_zone, ip);
}
@ -2880,7 +2939,7 @@ xfs_iflush_fork(
ASSERT(ifp->if_broot_bytes <=
(XFS_IFORK_SIZE(ip, whichfork) +
XFS_BROOT_SIZE_ADJ));
xfs_bmbt_to_bmdr(ifp->if_broot, ifp->if_broot_bytes,
xfs_bmbt_to_bmdr(mp, ifp->if_broot, ifp->if_broot_bytes,
(xfs_bmdr_block_t *)cp,
XFS_DFORK_SIZE(dip, mp, whichfork));
}
@ -3418,10 +3477,8 @@ xfs_iflush_int(
iip->ili_format.ilf_fields = 0;
iip->ili_logged = 1;
ASSERT(sizeof(xfs_lsn_t) == 8); /* don't lock if it shrinks */
spin_lock(&mp->m_ail_lock);
iip->ili_flush_lsn = iip->ili_item.li_lsn;
spin_unlock(&mp->m_ail_lock);
xfs_trans_ail_copy_lsn(mp->m_ail, &iip->ili_flush_lsn,
&iip->ili_item.li_lsn);
/*
* Attach the function xfs_iflush_done to the inode's
@ -3459,41 +3516,6 @@ corrupt_out:
}
/*
* Flush all inactive inodes in mp.
*/
void
xfs_iflush_all(
xfs_mount_t *mp)
{
xfs_inode_t *ip;
again:
XFS_MOUNT_ILOCK(mp);
ip = mp->m_inodes;
if (ip == NULL)
goto out;
do {
/* Make sure we skip markers inserted by sync */
if (ip->i_mount == NULL) {
ip = ip->i_mnext;
continue;
}
if (!VFS_I(ip)) {
XFS_MOUNT_IUNLOCK(mp);
xfs_finish_reclaim(ip, 0, XFS_IFLUSH_ASYNC);
goto again;
}
ASSERT(vn_count(VFS_I(ip)) == 0);
ip = ip->i_mnext;
} while (ip != mp->m_inodes);
out:
XFS_MOUNT_IUNLOCK(mp);
}
#ifdef XFS_ILOCK_TRACE
ktrace_t *xfs_ilock_trace_buf;

288
fs/xfs/xfs_inode.h
Просмотреть файл

@ -20,7 +20,7 @@
struct xfs_dinode;
struct xfs_dinode_core;
struct xfs_inode;
/*
* Fork identifiers.
@ -63,7 +63,7 @@ typedef struct xfs_ext_irec {
typedef struct xfs_ifork {
int if_bytes; /* bytes in if_u1 */
int if_real_bytes; /* bytes allocated in if_u1 */
xfs_bmbt_block_t *if_broot; /* file's incore btree root */
struct xfs_btree_block *if_broot; /* file's incore btree root */
short if_broot_bytes; /* bytes allocated for root */
unsigned char if_flags; /* per-fork flags */
unsigned char if_ext_max; /* max # of extent records */
@ -83,54 +83,6 @@ typedef struct xfs_ifork {
} if_u2;
} xfs_ifork_t;
/*
* Flags for xfs_ichgtime().
*/
#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
/*
* Per-fork incore inode flags.
*/
#define XFS_IFINLINE 0x01 /* Inline data is read in */
#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
/*
* Flags for xfs_itobp(), xfs_imap() and xfs_dilocate().
*/
#define XFS_IMAP_LOOKUP 0x1
#define XFS_IMAP_BULKSTAT 0x2
#ifdef __KERNEL__
struct bhv_desc;
struct cred;
struct ktrace;
struct xfs_buf;
struct xfs_bmap_free;
struct xfs_bmbt_irec;
struct xfs_bmbt_block;
struct xfs_inode;
struct xfs_inode_log_item;
struct xfs_mount;
struct xfs_trans;
struct xfs_dquot;
#if defined(XFS_ILOCK_TRACE)
#define XFS_ILOCK_KTRACE_SIZE 32
extern ktrace_t *xfs_ilock_trace_buf;
extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
#else
#define xfs_ilock_trace(i,n,f,ra)
#endif
typedef struct dm_attrs_s {
__uint32_t da_dmevmask; /* DMIG event mask */
__uint16_t da_dmstate; /* DMIG state info */
__uint16_t da_pad; /* DMIG extra padding */
} dm_attrs_t;
/*
* This is the xfs in-core inode structure.
* Most of the on-disk inode is embedded in the i_d field.
@ -191,19 +143,98 @@ typedef struct xfs_icdinode {
__uint32_t di_gen; /* generation number */
} xfs_icdinode_t;
typedef struct {
struct xfs_inode *ip_mnext; /* next inode in mount list */
struct xfs_inode *ip_mprev; /* ptr to prev inode */
struct xfs_mount *ip_mount; /* fs mount struct ptr */
} xfs_iptr_t;
/*
* Flags for xfs_ichgtime().
*/
#define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
#define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
/*
* Per-fork incore inode flags.
*/
#define XFS_IFINLINE 0x01 /* Inline data is read in */
#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
/*
* Flags for xfs_inotobp, xfs_itobp(), xfs_imap() and xfs_dilocate().
*/
#define XFS_IMAP_LOOKUP 0x1
#define XFS_IMAP_BULKSTAT 0x2
/*
* Fork handling.
*/
#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
#define XFS_IFORK_PTR(ip,w) \
((w) == XFS_DATA_FORK ? \
&(ip)->i_df : \
(ip)->i_afp)
#define XFS_IFORK_DSIZE(ip) \
(XFS_IFORK_Q(ip) ? \
XFS_IFORK_BOFF(ip) : \
XFS_LITINO((ip)->i_mount))
#define XFS_IFORK_ASIZE(ip) \
(XFS_IFORK_Q(ip) ? \
XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
0)
#define XFS_IFORK_SIZE(ip,w) \
((w) == XFS_DATA_FORK ? \
XFS_IFORK_DSIZE(ip) : \
XFS_IFORK_ASIZE(ip))
#define XFS_IFORK_FORMAT(ip,w) \
((w) == XFS_DATA_FORK ? \
(ip)->i_d.di_format : \
(ip)->i_d.di_aformat)
#define XFS_IFORK_FMT_SET(ip,w,n) \
((w) == XFS_DATA_FORK ? \
((ip)->i_d.di_format = (n)) : \
((ip)->i_d.di_aformat = (n)))
#define XFS_IFORK_NEXTENTS(ip,w) \
((w) == XFS_DATA_FORK ? \
(ip)->i_d.di_nextents : \
(ip)->i_d.di_anextents)
#define XFS_IFORK_NEXT_SET(ip,w,n) \
((w) == XFS_DATA_FORK ? \
((ip)->i_d.di_nextents = (n)) : \
((ip)->i_d.di_anextents = (n)))
#ifdef __KERNEL__
struct bhv_desc;
struct cred;
struct ktrace;
struct xfs_buf;
struct xfs_bmap_free;
struct xfs_bmbt_irec;
struct xfs_inode_log_item;
struct xfs_mount;
struct xfs_trans;
struct xfs_dquot;
#if defined(XFS_ILOCK_TRACE)
#define XFS_ILOCK_KTRACE_SIZE 32
extern ktrace_t *xfs_ilock_trace_buf;
extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
#else
#define xfs_ilock_trace(i,n,f,ra)
#endif
typedef struct dm_attrs_s {
__uint32_t da_dmevmask; /* DMIG event mask */
__uint16_t da_dmstate; /* DMIG state info */
__uint16_t da_pad; /* DMIG extra padding */
} dm_attrs_t;
typedef struct xfs_inode {
/* Inode linking and identification information. */
struct xfs_inode *i_mnext; /* next inode in mount list */
struct xfs_inode *i_mprev; /* ptr to prev inode */
struct xfs_mount *i_mount; /* fs mount struct ptr */
struct list_head i_reclaim; /* reclaim list */
struct inode *i_vnode; /* vnode backpointer */
struct xfs_dquot *i_udquot; /* user dquot */
struct xfs_dquot *i_gdquot; /* group dquot */
@ -238,6 +269,10 @@ typedef struct xfs_inode {
xfs_fsize_t i_size; /* in-memory size */
xfs_fsize_t i_new_size; /* size when write completes */
atomic_t i_iocount; /* outstanding I/O count */
/* VFS inode */
struct inode i_vnode; /* embedded VFS inode */
/* Trace buffers per inode. */
#ifdef XFS_INODE_TRACE
struct ktrace *i_trace; /* general inode trace */
@ -245,7 +280,7 @@ typedef struct xfs_inode {
#ifdef XFS_BMAP_TRACE
struct ktrace *i_xtrace; /* inode extent list trace */
#endif
#ifdef XFS_BMBT_TRACE
#ifdef XFS_BTREE_TRACE
struct ktrace *i_btrace; /* inode bmap btree trace */
#endif
#ifdef XFS_RW_TRACE
@ -265,13 +300,30 @@ typedef struct xfs_inode {
/* Convert from vfs inode to xfs inode */
static inline struct xfs_inode *XFS_I(struct inode *inode)
{
return (struct xfs_inode *)inode->i_private;
return container_of(inode, struct xfs_inode, i_vnode);
}
/* convert from xfs inode to vfs inode */
static inline struct inode *VFS_I(struct xfs_inode *ip)
{
return (struct inode *)ip->i_vnode;
return &ip->i_vnode;
}
/*
* Get rid of a partially initialized inode.
*
* We have to go through destroy_inode to make sure allocations
* from init_inode_always like the security data are undone.
*
* We mark the inode bad so that it takes the short cut in
* the reclaim path instead of going through the flush path
* which doesn't make sense for an inode that has never seen the
* light of day.
*/
static inline void xfs_destroy_inode(struct xfs_inode *ip)
{
make_bad_inode(VFS_I(ip));
return destroy_inode(VFS_I(ip));
}
/*
@ -327,50 +379,26 @@ xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
spin_unlock(&ip->i_flags_lock);
return ret;
}
#endif /* __KERNEL__ */
/*
* Fork handling.
* Manage the i_flush queue embedded in the inode. This completion
* queue synchronizes processes attempting to flush the in-core
* inode back to disk.
*/
static inline void xfs_iflock(xfs_inode_t *ip)
{
wait_for_completion(&ip->i_flush);
}
#define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
#define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
static inline int xfs_iflock_nowait(xfs_inode_t *ip)
{
return try_wait_for_completion(&ip->i_flush);
}
#define XFS_IFORK_PTR(ip,w) \
((w) == XFS_DATA_FORK ? \
&(ip)->i_df : \
(ip)->i_afp)
#define XFS_IFORK_DSIZE(ip) \
(XFS_IFORK_Q(ip) ? \
XFS_IFORK_BOFF(ip) : \
XFS_LITINO((ip)->i_mount))
#define XFS_IFORK_ASIZE(ip) \
(XFS_IFORK_Q(ip) ? \
XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
0)
#define XFS_IFORK_SIZE(ip,w) \
((w) == XFS_DATA_FORK ? \
XFS_IFORK_DSIZE(ip) : \
XFS_IFORK_ASIZE(ip))
#define XFS_IFORK_FORMAT(ip,w) \
((w) == XFS_DATA_FORK ? \
(ip)->i_d.di_format : \
(ip)->i_d.di_aformat)
#define XFS_IFORK_FMT_SET(ip,w,n) \
((w) == XFS_DATA_FORK ? \
((ip)->i_d.di_format = (n)) : \
((ip)->i_d.di_aformat = (n)))
#define XFS_IFORK_NEXTENTS(ip,w) \
((w) == XFS_DATA_FORK ? \
(ip)->i_d.di_nextents : \
(ip)->i_d.di_anextents)
#define XFS_IFORK_NEXT_SET(ip,w,n) \
((w) == XFS_DATA_FORK ? \
((ip)->i_d.di_nextents = (n)) : \
((ip)->i_d.di_anextents = (n)))
#ifdef __KERNEL__
static inline void xfs_ifunlock(xfs_inode_t *ip)
{
complete(&ip->i_flush);
}
/*
* In-core inode flags.
@ -484,25 +512,15 @@ int xfs_isilocked(xfs_inode_t *, uint);
uint xfs_ilock_map_shared(xfs_inode_t *);
void xfs_iunlock_map_shared(xfs_inode_t *, uint);
void xfs_ireclaim(xfs_inode_t *);
int xfs_finish_reclaim(xfs_inode_t *, int, int);
int xfs_finish_reclaim_all(struct xfs_mount *, int);
/*
* xfs_inode.c prototypes.
*/
int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **,
xfs_daddr_t, uint, uint);
int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
xfs_inode_t **, xfs_daddr_t, uint);
int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int);
int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
void xfs_dinode_from_disk(struct xfs_icdinode *,
struct xfs_dinode_core *);
void xfs_dinode_to_disk(struct xfs_dinode_core *,
struct xfs_icdinode *);
uint xfs_ip2xflags(struct xfs_inode *);
uint xfs_dic2xflags(struct xfs_dinode *);
@ -513,17 +531,12 @@ int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
xfs_fsize_t, int, int);
int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
void xfs_idestroy_fork(xfs_inode_t *, int);
void xfs_idestroy(xfs_inode_t *);
void xfs_idata_realloc(xfs_inode_t *, int, int);
void xfs_iextract(xfs_inode_t *);
void xfs_iext_realloc(xfs_inode_t *, int, int);
void xfs_iroot_realloc(xfs_inode_t *, int, int);
void xfs_ipin(xfs_inode_t *);
void xfs_iunpin(xfs_inode_t *);
int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int);
int xfs_iflush(xfs_inode_t *, uint);
void xfs_iflush_all(struct xfs_mount *);
void xfs_ichgtime(xfs_inode_t *, int);
xfs_fsize_t xfs_file_last_byte(xfs_inode_t *);
void xfs_lock_inodes(xfs_inode_t **, int, uint);
@ -532,6 +545,24 @@ void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
void xfs_synchronize_atime(xfs_inode_t *);
void xfs_mark_inode_dirty_sync(xfs_inode_t *);
#endif /* __KERNEL__ */
int xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
xfs_ino_t, struct xfs_dinode **,
struct xfs_buf **, int *, uint);
int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
struct xfs_inode *, struct xfs_dinode **,
struct xfs_buf **, xfs_daddr_t, uint, uint);
void xfs_dinode_from_disk(struct xfs_icdinode *,
struct xfs_dinode_core *);
void xfs_dinode_to_disk(struct xfs_dinode_core *,
struct xfs_icdinode *);
void xfs_idestroy_fork(struct xfs_inode *, int);
void xfs_idata_realloc(struct xfs_inode *, int, int);
void xfs_iroot_realloc(struct xfs_inode *, int, int);
int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
xfs_bmbt_irec_t *);
@ -561,7 +592,8 @@ void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
#ifdef DEBUG
void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t);
void xfs_isize_check(struct xfs_mount *, struct xfs_inode *,
xfs_fsize_t);
#else /* DEBUG */
#define xfs_isize_check(mp, ip, isize)
#endif /* DEBUG */
@ -576,26 +608,4 @@ extern struct kmem_zone *xfs_ifork_zone;
extern struct kmem_zone *xfs_inode_zone;
extern struct kmem_zone *xfs_ili_zone;
/*
* Manage the i_flush queue embedded in the inode. This completion
* queue synchronizes processes attempting to flush the in-core
* inode back to disk.
*/
static inline void xfs_iflock(xfs_inode_t *ip)
{
wait_for_completion(&ip->i_flush);
}
static inline int xfs_iflock_nowait(xfs_inode_t *ip)
{
return try_wait_for_completion(&ip->i_flush);
}
static inline void xfs_ifunlock(xfs_inode_t *ip)
{
complete(&ip->i_flush);
}
#endif /* __KERNEL__ */
#endif /* __XFS_INODE_H__ */

30
fs/xfs/xfs_inode_item.c
Просмотреть файл

@ -932,6 +932,7 @@ xfs_inode_item_init(
iip->ili_item.li_type = XFS_LI_INODE;
iip->ili_item.li_ops = &xfs_inode_item_ops;
iip->ili_item.li_mountp = mp;
iip->ili_item.li_ailp = mp->m_ail;
iip->ili_inode = ip;
/*
@ -976,9 +977,8 @@ xfs_iflush_done(
xfs_buf_t *bp,
xfs_inode_log_item_t *iip)
{
xfs_inode_t *ip;
ip = iip->ili_inode;
xfs_inode_t *ip = iip->ili_inode;
struct xfs_ail *ailp = iip->ili_item.li_ailp;
/*
* We only want to pull the item from the AIL if it is
@ -991,15 +991,12 @@ xfs_iflush_done(
*/
if (iip->ili_logged &&
(iip->ili_item.li_lsn == iip->ili_flush_lsn)) {
spin_lock(&ip->i_mount->m_ail_lock);
spin_lock(&ailp->xa_lock);
if (iip->ili_item.li_lsn == iip->ili_flush_lsn) {
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
xfs_trans_delete_ail(ip->i_mount,
(xfs_log_item_t*)iip);
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, (xfs_log_item_t*)iip);
} else {
spin_unlock(&ip->i_mount->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
}
@ -1031,21 +1028,20 @@ void
xfs_iflush_abort(
xfs_inode_t *ip)
{
xfs_inode_log_item_t *iip;
xfs_inode_log_item_t *iip = ip->i_itemp;
xfs_mount_t *mp;
iip = ip->i_itemp;
mp = ip->i_mount;
if (iip) {
struct xfs_ail *ailp = iip->ili_item.li_ailp;
if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
if (iip->ili_item.li_flags & XFS_LI_IN_AIL) {
/*
* xfs_trans_delete_ail() drops the AIL lock.
*/
xfs_trans_delete_ail(mp, (xfs_log_item_t *)iip);
/* xfs_trans_ail_delete() drops the AIL lock. */
xfs_trans_ail_delete(ailp, (xfs_log_item_t *)iip);
} else
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
iip->ili_logged = 0;
/*

41
fs/xfs/xfs_inode_item.h
Просмотреть файл

@ -112,6 +112,24 @@ typedef struct xfs_inode_log_format_64 {
#define XFS_ILI_IOLOCKED_ANY (XFS_ILI_IOLOCKED_EXCL | XFS_ILI_IOLOCKED_SHARED)
#define XFS_ILOG_FBROOT(w) xfs_ilog_fbroot(w)
static inline int xfs_ilog_fbroot(int w)
{
return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
}
#define XFS_ILOG_FEXT(w) xfs_ilog_fext(w)
static inline int xfs_ilog_fext(int w)
{
return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
}
#define XFS_ILOG_FDATA(w) xfs_ilog_fdata(w)
static inline int xfs_ilog_fdata(int w)
{
return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
}
#ifdef __KERNEL__
struct xfs_buf;
@ -148,26 +166,6 @@ typedef struct xfs_inode_log_item {
} xfs_inode_log_item_t;
#define XFS_ILOG_FDATA(w) xfs_ilog_fdata(w)
static inline int xfs_ilog_fdata(int w)
{
return (w == XFS_DATA_FORK ? XFS_ILOG_DDATA : XFS_ILOG_ADATA);
}
#endif /* __KERNEL__ */
#define XFS_ILOG_FBROOT(w) xfs_ilog_fbroot(w)
static inline int xfs_ilog_fbroot(int w)
{
return (w == XFS_DATA_FORK ? XFS_ILOG_DBROOT : XFS_ILOG_ABROOT);
}
#define XFS_ILOG_FEXT(w) xfs_ilog_fext(w)
static inline int xfs_ilog_fext(int w)
{
return (w == XFS_DATA_FORK ? XFS_ILOG_DEXT : XFS_ILOG_AEXT);
}
static inline int xfs_inode_clean(xfs_inode_t *ip)
{
return (!ip->i_itemp ||
@ -175,9 +173,6 @@ static inline int xfs_inode_clean(xfs_inode_t *ip)
!ip->i_update_core;
}
#ifdef __KERNEL__
extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
extern void xfs_inode_item_destroy(struct xfs_inode *);
extern void xfs_iflush_done(struct xfs_buf *, xfs_inode_log_item_t *);

33
fs/xfs/xfs_itable.c
Просмотреть файл

@ -359,7 +359,6 @@ xfs_bulkstat(
int ubused; /* bytes used by formatter */
xfs_buf_t *bp; /* ptr to on-disk inode cluster buf */
xfs_dinode_t *dip; /* ptr into bp for specific inode */
xfs_inode_t *ip; /* ptr to in-core inode struct */
/*
* Get the last inode value, see if there's nothing to do.
@ -416,8 +415,7 @@ xfs_bulkstat(
/*
* Allocate and initialize a btree cursor for ialloc btree.
*/
cur = xfs_btree_init_cursor(mp, NULL, agbp, agno, XFS_BTNUM_INO,
(xfs_inode_t *)0, 0);
cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
irbp = irbuf;
irbufend = irbuf + nirbuf;
end_of_ag = 0;
@ -472,7 +470,7 @@ xfs_bulkstat(
* In any case, increment to the next record.
*/
if (!error)
error = xfs_inobt_increment(cur, 0, &tmp);
error = xfs_btree_increment(cur, 0, &tmp);
} else {
/*
* Start of ag. Lookup the first inode chunk.
@ -539,7 +537,7 @@ xfs_bulkstat(
* Set agino to after this chunk and bump the cursor.
*/
agino = gino + XFS_INODES_PER_CHUNK;
error = xfs_inobt_increment(cur, 0, &tmp);
error = xfs_btree_increment(cur, 0, &tmp);
cond_resched();
}
/*
@ -586,6 +584,8 @@ xfs_bulkstat(
if (flags & (BULKSTAT_FG_QUICK |
BULKSTAT_FG_INLINE)) {
int offset;
ino = XFS_AGINO_TO_INO(mp, agno,
agino);
bno = XFS_AGB_TO_DADDR(mp, agno,
@ -594,21 +594,15 @@ xfs_bulkstat(
/*
* Get the inode cluster buffer
*/
ASSERT(xfs_inode_zone != NULL);
ip = kmem_zone_zalloc(xfs_inode_zone,
KM_SLEEP);
ip->i_ino = ino;
ip->i_mount = mp;
spin_lock_init(&ip->i_flags_lock);
if (bp)
xfs_buf_relse(bp);
error = xfs_itobp(mp, NULL, ip,
&dip, &bp, bno,
XFS_IMAP_BULKSTAT,
XFS_BUF_LOCK);
error = xfs_inotobp(mp, NULL, ino, &dip,
&bp, &offset,
XFS_IMAP_BULKSTAT);
if (!error)
clustidx = ip->i_boffset / mp->m_sb.sb_inodesize;
kmem_zone_free(xfs_inode_zone, ip);
clustidx = offset / mp->m_sb.sb_inodesize;
if (XFS_TEST_ERROR(error != 0,
mp, XFS_ERRTAG_BULKSTAT_READ_CHUNK,
XFS_RANDOM_BULKSTAT_READ_CHUNK)) {
@ -842,8 +836,7 @@ xfs_inumbers(
agino = 0;
continue;
}
cur = xfs_btree_init_cursor(mp, NULL, agbp, agno,
XFS_BTNUM_INO, (xfs_inode_t *)0, 0);
cur = xfs_inobt_init_cursor(mp, NULL, agbp, agno);
error = xfs_inobt_lookup_ge(cur, agino, 0, 0, &tmp);
if (error) {
xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
@ -887,7 +880,7 @@ xfs_inumbers(
bufidx = 0;
}
if (left) {
error = xfs_inobt_increment(cur, 0, &tmp);
error = xfs_btree_increment(cur, 0, &tmp);
if (error) {
xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
cur = NULL;

10
fs/xfs/xfs_log.c
Просмотреть файл

@ -567,12 +567,12 @@ xfs_log_mount(
/*
* Initialize the AIL now we have a log.
*/
spin_lock_init(&mp->m_ail_lock);
error = xfs_trans_ail_init(mp);
if (error) {
cmn_err(CE_WARN, "XFS: AIL initialisation failed: error %d", error);
goto error;
}
mp->m_log->l_ailp = mp->m_ail;
/*
* skip log recovery on a norecovery mount. pretend it all
@ -900,7 +900,7 @@ xfs_log_move_tail(xfs_mount_t *mp,
int
xfs_log_need_covered(xfs_mount_t *mp)
{
int needed = 0, gen;
int needed = 0;
xlog_t *log = mp->m_log;
if (!xfs_fs_writable(mp))
@ -909,7 +909,7 @@ xfs_log_need_covered(xfs_mount_t *mp)
spin_lock(&log->l_icloglock);
if (((log->l_covered_state == XLOG_STATE_COVER_NEED) ||
(log->l_covered_state == XLOG_STATE_COVER_NEED2))
&& !xfs_trans_first_ail(mp, &gen)
&& !xfs_trans_ail_tail(log->l_ailp)
&& xlog_iclogs_empty(log)) {
if (log->l_covered_state == XLOG_STATE_COVER_NEED)
log->l_covered_state = XLOG_STATE_COVER_DONE;
@ -946,7 +946,7 @@ xlog_assign_tail_lsn(xfs_mount_t *mp)
xfs_lsn_t tail_lsn;
xlog_t *log = mp->m_log;
tail_lsn = xfs_trans_tail_ail(mp);
tail_lsn = xfs_trans_ail_tail(mp->m_ail);
spin_lock(&log->l_grant_lock);
if (tail_lsn != 0) {
log->l_tail_lsn = tail_lsn;
@ -1413,7 +1413,7 @@ xlog_grant_push_ail(xfs_mount_t *mp,
*/
if (threshold_lsn &&
!XLOG_FORCED_SHUTDOWN(log))
xfs_trans_push_ail(mp, threshold_lsn);
xfs_trans_ail_push(log->l_ailp, threshold_lsn);
} /* xlog_grant_push_ail */

1
fs/xfs/xfs_log_priv.h
Просмотреть файл

@ -404,6 +404,7 @@ typedef struct xlog_in_core {
typedef struct log {
/* The following fields don't need locking */
struct xfs_mount *l_mp; /* mount point */
struct xfs_ail *l_ailp; /* AIL log is working with */
struct xfs_buf *l_xbuf; /* extra buffer for log
* wrapping */
struct xfs_buftarg *l_targ; /* buftarg of log */

105
fs/xfs/xfs_log_recover.c
Просмотреть файл

@ -54,10 +54,8 @@ STATIC void xlog_recover_insert_item_backq(xlog_recover_item_t **q,
xlog_recover_item_t *item);
#if defined(DEBUG)
STATIC void xlog_recover_check_summary(xlog_t *);
STATIC void xlog_recover_check_ail(xfs_mount_t *, xfs_log_item_t *, int);
#else
#define xlog_recover_check_summary(log)
#define xlog_recover_check_ail(mp, lip, gen)
#endif
@ -1419,7 +1417,13 @@ xlog_recover_add_to_trans(
return 0;
item = trans->r_itemq;
if (item == NULL) {
ASSERT(*(uint *)dp == XFS_TRANS_HEADER_MAGIC);
/* we need to catch log corruptions here */
if (*(uint *)dp != XFS_TRANS_HEADER_MAGIC) {
xlog_warn("XFS: xlog_recover_add_to_trans: "
"bad header magic number");
ASSERT(0);
return XFS_ERROR(EIO);
}
if (len == sizeof(xfs_trans_header_t))
xlog_recover_add_item(&trans->r_itemq);
memcpy(&trans->r_theader, dp, len); /* d, s, l */
@ -2452,8 +2456,8 @@ xlog_recover_do_inode_trans(
break;
case XFS_ILOG_DBROOT:
xfs_bmbt_to_bmdr((xfs_bmbt_block_t *)src, len,
&(dip->di_u.di_bmbt),
xfs_bmbt_to_bmdr(mp, (struct xfs_btree_block *)src, len,
&dip->di_u.di_bmbt,
XFS_DFORK_DSIZE(dip, mp));
break;
@ -2490,8 +2494,8 @@ xlog_recover_do_inode_trans(
case XFS_ILOG_ABROOT:
dest = XFS_DFORK_APTR(dip);
xfs_bmbt_to_bmdr((xfs_bmbt_block_t *)src, len,
(xfs_bmdr_block_t*)dest,
xfs_bmbt_to_bmdr(mp, (struct xfs_btree_block *)src,
len, (xfs_bmdr_block_t*)dest,
XFS_DFORK_ASIZE(dip, mp));
break;
@ -2683,11 +2687,11 @@ xlog_recover_do_efi_trans(
efip->efi_next_extent = efi_formatp->efi_nextents;
efip->efi_flags |= XFS_EFI_COMMITTED;
spin_lock(&mp->m_ail_lock);
spin_lock(&log->l_ailp->xa_lock);
/*
* xfs_trans_update_ail() drops the AIL lock.
* xfs_trans_ail_update() drops the AIL lock.
*/
xfs_trans_update_ail(mp, (xfs_log_item_t *)efip, lsn);
xfs_trans_ail_update(log->l_ailp, (xfs_log_item_t *)efip, lsn);
return 0;
}
@ -2706,12 +2710,12 @@ xlog_recover_do_efd_trans(
xlog_recover_item_t *item,
int pass)
{
xfs_mount_t *mp;
xfs_efd_log_format_t *efd_formatp;
xfs_efi_log_item_t *efip = NULL;
xfs_log_item_t *lip;
int gen;
__uint64_t efi_id;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp = log->l_ailp;
if (pass == XLOG_RECOVER_PASS1) {
return;
@ -2728,25 +2732,26 @@ xlog_recover_do_efd_trans(
* Search for the efi with the id in the efd format structure
* in the AIL.
*/
mp = log->l_mp;
spin_lock(&mp->m_ail_lock);
lip = xfs_trans_first_ail(mp, &gen);
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
while (lip != NULL) {
if (lip->li_type == XFS_LI_EFI) {
efip = (xfs_efi_log_item_t *)lip;
if (efip->efi_format.efi_id == efi_id) {
/*
* xfs_trans_delete_ail() drops the
* xfs_trans_ail_delete() drops the
* AIL lock.
*/
xfs_trans_delete_ail(mp, lip);
xfs_trans_ail_delete(ailp, lip);
xfs_efi_item_free(efip);
return;
spin_lock(&ailp->xa_lock);
break;
}
}
lip = xfs_trans_next_ail(mp, lip, &gen, NULL);
lip = xfs_trans_ail_cursor_next(ailp, &cur);
}
spin_unlock(&mp->m_ail_lock);
xfs_trans_ail_cursor_done(ailp, &cur);
spin_unlock(&ailp->xa_lock);
}
/*
@ -3029,33 +3034,6 @@ abort_error:
return error;
}
/*
* Verify that once we've encountered something other than an EFI
* in the AIL that there are no more EFIs in the AIL.
*/
#if defined(DEBUG)
STATIC void
xlog_recover_check_ail(
xfs_mount_t *mp,
xfs_log_item_t *lip,
int gen)
{
int orig_gen = gen;
do {
ASSERT(lip->li_type != XFS_LI_EFI);
lip = xfs_trans_next_ail(mp, lip, &gen, NULL);
/*
* The check will be bogus if we restart from the
* beginning of the AIL, so ASSERT that we don't.
* We never should since we're holding the AIL lock
* the entire time.
*/
ASSERT(gen == orig_gen);
} while (lip != NULL);
}
#endif /* DEBUG */
/*
* When this is called, all of the EFIs which did not have
* corresponding EFDs should be in the AIL. What we do now
@ -3080,20 +3058,23 @@ xlog_recover_process_efis(
{
xfs_log_item_t *lip;
xfs_efi_log_item_t *efip;
int gen;
xfs_mount_t *mp;
int error = 0;
struct xfs_ail_cursor cur;
struct xfs_ail *ailp;
mp = log->l_mp;
spin_lock(&mp->m_ail_lock);
lip = xfs_trans_first_ail(mp, &gen);
ailp = log->l_ailp;
spin_lock(&ailp->xa_lock);
lip = xfs_trans_ail_cursor_first(ailp, &cur, 0);
while (lip != NULL) {
/*
* We're done when we see something other than an EFI.
* There should be no EFIs left in the AIL now.
*/
if (lip->li_type != XFS_LI_EFI) {
xlog_recover_check_ail(mp, lip, gen);
#ifdef DEBUG
for (; lip; lip = xfs_trans_ail_cursor_next(ailp, &cur))
ASSERT(lip->li_type != XFS_LI_EFI);
#endif
break;
}
@ -3102,18 +3083,20 @@ xlog_recover_process_efis(
*/
efip = (xfs_efi_log_item_t *)lip;
if (efip->efi_flags & XFS_EFI_RECOVERED) {
lip = xfs_trans_next_ail(mp, lip, &gen, NULL);
lip = xfs_trans_ail_cursor_next(ailp, &cur);
continue;
}
spin_unlock(&mp->m_ail_lock);
error = xlog_recover_process_efi(mp, efip);
spin_unlock(&ailp->xa_lock);
error = xlog_recover_process_efi(log->l_mp, efip);
spin_lock(&ailp->xa_lock);
if (error)
return error;
spin_lock(&mp->m_ail_lock);
lip = xfs_trans_next_ail(mp, lip, &gen, NULL);
goto out;
lip = xfs_trans_ail_cursor_next(ailp, &cur);
}
spin_unlock(&mp->m_ail_lock);
out:
xfs_trans_ail_cursor_done(ailp, &cur);
spin_unlock(&ailp->xa_lock);
return error;
}

47
fs/xfs/xfs_mount.c
Просмотреть файл

@ -567,8 +567,6 @@ xfs_readsb(xfs_mount_t *mp, int flags)
STATIC void
xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
{
int i;
mp->m_agfrotor = mp->m_agirotor = 0;
spin_lock_init(&mp->m_agirotor_lock);
mp->m_maxagi = mp->m_sb.sb_agcount;
@ -582,7 +580,6 @@ xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
mp->m_blockmask = sbp->sb_blocksize - 1;
mp->m_blockwsize = sbp->sb_blocksize >> XFS_WORDLOG;
mp->m_blockwmask = mp->m_blockwsize - 1;
INIT_LIST_HEAD(&mp->m_del_inodes);
/*
* Setup for attributes, in case they get created.
@ -605,24 +602,20 @@ xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
}
ASSERT(mp->m_attroffset < XFS_LITINO(mp));
for (i = 0; i < 2; i++) {
mp->m_alloc_mxr[i] = XFS_BTREE_BLOCK_MAXRECS(sbp->sb_blocksize,
xfs_alloc, i == 0);
mp->m_alloc_mnr[i] = XFS_BTREE_BLOCK_MINRECS(sbp->sb_blocksize,
xfs_alloc, i == 0);
}
for (i = 0; i < 2; i++) {
mp->m_bmap_dmxr[i] = XFS_BTREE_BLOCK_MAXRECS(sbp->sb_blocksize,
xfs_bmbt, i == 0);
mp->m_bmap_dmnr[i] = XFS_BTREE_BLOCK_MINRECS(sbp->sb_blocksize,
xfs_bmbt, i == 0);
}
for (i = 0; i < 2; i++) {
mp->m_inobt_mxr[i] = XFS_BTREE_BLOCK_MAXRECS(sbp->sb_blocksize,
xfs_inobt, i == 0);
mp->m_inobt_mnr[i] = XFS_BTREE_BLOCK_MINRECS(sbp->sb_blocksize,
xfs_inobt, i == 0);
}
mp->m_alloc_mxr[0] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 1);
mp->m_alloc_mxr[1] = xfs_allocbt_maxrecs(mp, sbp->sb_blocksize, 0);
mp->m_alloc_mnr[0] = mp->m_alloc_mxr[0] / 2;
mp->m_alloc_mnr[1] = mp->m_alloc_mxr[1] / 2;
mp->m_inobt_mxr[0] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 1);
mp->m_inobt_mxr[1] = xfs_inobt_maxrecs(mp, sbp->sb_blocksize, 0);
mp->m_inobt_mnr[0] = mp->m_inobt_mxr[0] / 2;
mp->m_inobt_mnr[1] = mp->m_inobt_mxr[1] / 2;
mp->m_bmap_dmxr[0] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 1);
mp->m_bmap_dmxr[1] = xfs_bmbt_maxrecs(mp, sbp->sb_blocksize, 0);
mp->m_bmap_dmnr[0] = mp->m_bmap_dmxr[0] / 2;
mp->m_bmap_dmnr[1] = mp->m_bmap_dmxr[1] / 2;
mp->m_bsize = XFS_FSB_TO_BB(mp, 1);
mp->m_ialloc_inos = (int)MAX((__uint16_t)XFS_INODES_PER_CHUNK,
@ -1241,10 +1234,13 @@ xfs_unmountfs(
* need to force the log first.
*/
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
xfs_iflush_all(mp);
xfs_reclaim_inodes(mp, 0, XFS_IFLUSH_ASYNC);
XFS_QM_DQPURGEALL(mp, XFS_QMOPT_QUOTALL | XFS_QMOPT_UMOUNTING);
if (mp->m_quotainfo)
XFS_QM_DONE(mp);
/*
* Flush out the log synchronously so that we know for sure
* that nothing is pinned. This is important because bflush()
@ -1285,11 +1281,6 @@ xfs_unmountfs(
xfs_unmountfs_wait(mp); /* wait for async bufs */
xfs_log_unmount(mp); /* Done! No more fs ops. */
/*
* All inodes from this mount point should be freed.
*/
ASSERT(mp->m_inodes == NULL);
if ((mp->m_flags & XFS_MOUNT_NOUUID) == 0)
uuid_table_remove(&mp->m_sb.sb_uuid);
@ -1297,8 +1288,6 @@ xfs_unmountfs(
xfs_errortag_clearall(mp, 0);
#endif
xfs_free_perag(mp);
if (mp->m_quotainfo)
XFS_QM_DONE(mp);
}
STATIC void

54
fs/xfs/xfs_mount.h
Просмотреть файл

@ -18,6 +18,7 @@
#ifndef __XFS_MOUNT_H__
#define __XFS_MOUNT_H__
#include "xfs_sync.h"
typedef struct xfs_trans_reservations {
uint tr_write; /* extent alloc trans */
@ -44,14 +45,14 @@ typedef struct xfs_trans_reservations {
} xfs_trans_reservations_t;
#ifndef __KERNEL__
/*
* Moved here from xfs_ag.h to avoid reordering header files
*/
#define XFS_DADDR_TO_AGNO(mp,d) \
((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
#define XFS_DADDR_TO_AGBNO(mp,d) \
((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
#else
#else /* __KERNEL__ */
struct cred;
struct log;
struct xfs_mount_args;
@ -62,6 +63,7 @@ struct xfs_extdelta;
struct xfs_swapext;
struct xfs_mru_cache;
struct xfs_nameops;
struct xfs_ail;
/*
* Prototypes and functions for the Data Migration subsystem.
@ -223,18 +225,10 @@ extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
#endif
typedef struct xfs_ail {
struct list_head xa_ail;
uint xa_gen;
struct task_struct *xa_task;
xfs_lsn_t xa_target;
} xfs_ail_t;
typedef struct xfs_mount {
struct super_block *m_super;
xfs_tid_t m_tid; /* next unused tid for fs */
spinlock_t m_ail_lock; /* fs AIL mutex */
xfs_ail_t m_ail; /* fs active log item list */
struct xfs_ail *m_ail; /* fs active log item list */
xfs_sb_t m_sb; /* copy of fs superblock */
spinlock_t m_sb_lock; /* sb counter lock */
struct xfs_buf *m_sb_bp; /* buffer for superblock */
@ -247,9 +241,6 @@ typedef struct xfs_mount {
xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
spinlock_t m_agirotor_lock;/* .. and lock protecting it */
xfs_agnumber_t m_maxagi; /* highest inode alloc group */
struct xfs_inode *m_inodes; /* active inode list */
struct list_head m_del_inodes; /* inodes to reclaim */
mutex_t m_ilock; /* inode list mutex */
uint m_ireclaims; /* count of calls to reclaim*/
uint m_readio_log; /* min read size log bytes */
uint m_readio_blocks; /* min read size blocks */
@ -267,7 +258,6 @@ typedef struct xfs_mount {
xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
__uint8_t m_dircook_elog; /* log d-cookie entry bits */
__uint8_t m_blkbit_log; /* blocklog + NBBY */
__uint8_t m_blkbb_log; /* blocklog - BBSHIFT */
__uint8_t m_agno_log; /* log #ag's */
@ -276,12 +266,12 @@ typedef struct xfs_mount {
uint m_blockmask; /* sb_blocksize-1 */
uint m_blockwsize; /* sb_blocksize in words */
uint m_blockwmask; /* blockwsize-1 */
uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */
uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */
uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */
uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */
uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */
uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */
uint m_alloc_mxr[2]; /* max alloc btree records */
uint m_alloc_mnr[2]; /* min alloc btree records */
uint m_bmap_dmxr[2]; /* max bmap btree records */
uint m_bmap_dmnr[2]; /* min bmap btree records */
uint m_inobt_mxr[2]; /* max inobt btree records */
uint m_inobt_mnr[2]; /* min inobt btree records */
uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */
@ -313,8 +303,7 @@ typedef struct xfs_mount {
int m_attr_magicpct;/* 37% of the blocksize */
int m_dir_magicpct; /* 37% of the dir blocksize */
__uint8_t m_mk_sharedro; /* mark shared ro on unmount */
__uint8_t m_inode_quiesce;/* call quiesce on new inodes.
field governed by m_ilock */
__uint8_t m_inode_quiesce;/* call quiesce on new inodes. */
__uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
int m_dirblksize; /* directory block sz--bytes */
@ -508,7 +497,6 @@ typedef struct xfs_mod_sb {
#define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock))
#define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock))
extern void xfs_mod_sb(xfs_trans_t *, __int64_t);
extern int xfs_log_sbcount(xfs_mount_t *, uint);
extern int xfs_mountfs(xfs_mount_t *mp);
extern void xfs_mountfs_check_barriers(xfs_mount_t *mp);
@ -525,20 +513,20 @@ extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
extern int xfs_readsb(xfs_mount_t *, int);
extern void xfs_freesb(xfs_mount_t *);
extern int xfs_fs_writable(xfs_mount_t *);
extern int xfs_syncsub(xfs_mount_t *, int, int *);
extern int xfs_sync_inodes(xfs_mount_t *, int, int *);
extern xfs_agnumber_t xfs_initialize_perag(xfs_mount_t *, xfs_agnumber_t);
extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
extern int xfs_dmops_get(struct xfs_mount *, struct xfs_mount_args *);
extern int xfs_dmops_get(struct xfs_mount *);
extern void xfs_dmops_put(struct xfs_mount *);
extern int xfs_qmops_get(struct xfs_mount *, struct xfs_mount_args *);
extern int xfs_qmops_get(struct xfs_mount *);
extern void xfs_qmops_put(struct xfs_mount *);
extern struct xfs_dmops xfs_dmcore_xfs;
#endif /* __KERNEL__ */
extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t);
extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
#endif /* __XFS_MOUNT_H__ */

5
fs/xfs/xfs_qmops.c
Просмотреть файл

@ -28,7 +28,6 @@
#include "xfs_mount.h"
#include "xfs_quota.h"
#include "xfs_error.h"
#include "xfs_clnt.h"
STATIC struct xfs_dquot *
@ -131,9 +130,9 @@ static struct xfs_qmops xfs_qmcore_stub = {
};
int
xfs_qmops_get(struct xfs_mount *mp, struct xfs_mount_args *args)
xfs_qmops_get(struct xfs_mount *mp)
{
if (args->flags & (XFSMNT_UQUOTA | XFSMNT_PQUOTA | XFSMNT_GQUOTA)) {
if (XFS_IS_QUOTA_RUNNING(mp)) {
#ifdef CONFIG_XFS_QUOTA
mp->m_qm_ops = &xfs_qmcore_xfs;
#else

13
fs/xfs/xfs_trans.c
Просмотреть файл

@ -1383,11 +1383,12 @@ xfs_trans_chunk_committed(
xfs_log_item_desc_t *lidp;
xfs_log_item_t *lip;
xfs_lsn_t item_lsn;
struct xfs_mount *mp;
int i;
lidp = licp->lic_descs;
for (i = 0; i < licp->lic_unused; i++, lidp++) {
struct xfs_ail *ailp;
if (xfs_lic_isfree(licp, i)) {
continue;
}
@ -1424,19 +1425,19 @@ xfs_trans_chunk_committed(
* This would cause the earlier transaction to fail
* the test below.
*/
mp = lip->li_mountp;
spin_lock(&mp->m_ail_lock);
ailp = lip->li_ailp;
spin_lock(&ailp->xa_lock);
if (XFS_LSN_CMP(item_lsn, lip->li_lsn) > 0) {
/*
* This will set the item's lsn to item_lsn
* and update the position of the item in
* the AIL.
*
* xfs_trans_update_ail() drops the AIL lock.
* xfs_trans_ail_update() drops the AIL lock.
*/
xfs_trans_update_ail(mp, lip, item_lsn);
xfs_trans_ail_update(ailp, lip, item_lsn);
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
/*

322
fs/xfs/xfs_trans.h
Просмотреть файл

@ -18,6 +18,8 @@
#ifndef __XFS_TRANS_H__
#define __XFS_TRANS_H__
struct xfs_log_item;
/*
* This is the structure written in the log at the head of
* every transaction. It identifies the type and id of the
@ -98,76 +100,6 @@ typedef struct xfs_trans_header {
#define XFS_TRANS_TYPE_MAX 41
/* new transaction types need to be reflected in xfs_logprint(8) */
#ifdef __KERNEL__
struct xfs_buf;
struct xfs_buftarg;
struct xfs_efd_log_item;
struct xfs_efi_log_item;
struct xfs_inode;
struct xfs_item_ops;
struct xfs_log_iovec;
struct xfs_log_item;
struct xfs_log_item_desc;
struct xfs_mount;
struct xfs_trans;
struct xfs_dquot_acct;
typedef struct xfs_log_item {
struct list_head li_ail; /* AIL pointers */
xfs_lsn_t li_lsn; /* last on-disk lsn */
struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
struct xfs_mount *li_mountp; /* ptr to fs mount */
uint li_type; /* item type */
uint li_flags; /* misc flags */
struct xfs_log_item *li_bio_list; /* buffer item list */
void (*li_cb)(struct xfs_buf *,
struct xfs_log_item *);
/* buffer item iodone */
/* callback func */
struct xfs_item_ops *li_ops; /* function list */
} xfs_log_item_t;
#define XFS_LI_IN_AIL 0x1
#define XFS_LI_ABORTED 0x2
typedef struct xfs_item_ops {
uint (*iop_size)(xfs_log_item_t *);
void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
void (*iop_pin)(xfs_log_item_t *);
void (*iop_unpin)(xfs_log_item_t *, int);
void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
uint (*iop_trylock)(xfs_log_item_t *);
void (*iop_unlock)(xfs_log_item_t *);
xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
void (*iop_push)(xfs_log_item_t *);
void (*iop_pushbuf)(xfs_log_item_t *);
void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
} xfs_item_ops_t;
#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip)
#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp)
#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
#define IOP_UNPIN(ip, flags) (*(ip)->li_ops->iop_unpin)(ip, flags)
#define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
#define IOP_TRYLOCK(ip) (*(ip)->li_ops->iop_trylock)(ip)
#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
#define IOP_PUSH(ip) (*(ip)->li_ops->iop_push)(ip)
#define IOP_PUSHBUF(ip) (*(ip)->li_ops->iop_pushbuf)(ip)
#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
/*
* Return values for the IOP_TRYLOCK() routines.
*/
#define XFS_ITEM_SUCCESS 0
#define XFS_ITEM_PINNED 1
#define XFS_ITEM_LOCKED 2
#define XFS_ITEM_FLUSHING 3
#define XFS_ITEM_PUSHBUF 4
#endif /* __KERNEL__ */
/*
* This structure is used to track log items associated with
* a transaction. It points to the log item and keeps some
@ -176,7 +108,7 @@ typedef struct xfs_item_ops {
* once we get to commit processing (see xfs_trans_commit()).
*/
typedef struct xfs_log_item_desc {
xfs_log_item_t *lid_item;
struct xfs_log_item *lid_item;
ushort lid_size;
unsigned char lid_flags;
unsigned char lid_index;
@ -276,94 +208,6 @@ xfs_lic_desc_to_chunk(xfs_log_item_desc_t *dp)
(xfs_caddr_t)(((xfs_log_item_chunk_t*)0)->lic_descs));
}
#ifdef __KERNEL__
/*
* This structure is used to maintain a list of block ranges that have been
* freed in the transaction. The ranges are listed in the perag[] busy list
* between when they're freed and the transaction is committed to disk.
*/
typedef struct xfs_log_busy_slot {
xfs_agnumber_t lbc_ag;
ushort lbc_idx; /* index in perag.busy[] */
} xfs_log_busy_slot_t;
#define XFS_LBC_NUM_SLOTS 31
typedef struct xfs_log_busy_chunk {
struct xfs_log_busy_chunk *lbc_next;
uint lbc_free; /* free slots bitmask */
ushort lbc_unused; /* first unused */
xfs_log_busy_slot_t lbc_busy[XFS_LBC_NUM_SLOTS];
} xfs_log_busy_chunk_t;
#define XFS_LBC_MAX_SLOT (XFS_LBC_NUM_SLOTS - 1)
#define XFS_LBC_FREEMASK ((1U << XFS_LBC_NUM_SLOTS) - 1)
#define XFS_LBC_INIT(cp) ((cp)->lbc_free = XFS_LBC_FREEMASK)
#define XFS_LBC_CLAIM(cp, slot) ((cp)->lbc_free &= ~(1 << (slot)))
#define XFS_LBC_SLOT(cp, slot) (&((cp)->lbc_busy[(slot)]))
#define XFS_LBC_VACANCY(cp) (((cp)->lbc_free) & XFS_LBC_FREEMASK)
#define XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))
/*
* This is the type of function which can be given to xfs_trans_callback()
* to be called upon the transaction's commit to disk.
*/
typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
/*
* This is the structure maintained for every active transaction.
*/
typedef struct xfs_trans {
unsigned int t_magic; /* magic number */
xfs_log_callback_t t_logcb; /* log callback struct */
unsigned int t_type; /* transaction type */
unsigned int t_log_res; /* amt of log space resvd */
unsigned int t_log_count; /* count for perm log res */
unsigned int t_blk_res; /* # of blocks resvd */
unsigned int t_blk_res_used; /* # of resvd blocks used */
unsigned int t_rtx_res; /* # of rt extents resvd */
unsigned int t_rtx_res_used; /* # of resvd rt extents used */
xfs_log_ticket_t t_ticket; /* log mgr ticket */
xfs_lsn_t t_lsn; /* log seq num of start of
* transaction. */
xfs_lsn_t t_commit_lsn; /* log seq num of end of
* transaction. */
struct xfs_mount *t_mountp; /* ptr to fs mount struct */
struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
xfs_trans_callback_t t_callback; /* transaction callback */
void *t_callarg; /* callback arg */
unsigned int t_flags; /* misc flags */
int64_t t_icount_delta; /* superblock icount change */
int64_t t_ifree_delta; /* superblock ifree change */
int64_t t_fdblocks_delta; /* superblock fdblocks chg */
int64_t t_res_fdblocks_delta; /* on-disk only chg */
int64_t t_frextents_delta;/* superblock freextents chg*/
int64_t t_res_frextents_delta; /* on-disk only chg */
#ifdef DEBUG
int64_t t_ag_freeblks_delta; /* debugging counter */
int64_t t_ag_flist_delta; /* debugging counter */
int64_t t_ag_btree_delta; /* debugging counter */
#endif
int64_t t_dblocks_delta;/* superblock dblocks change */
int64_t t_agcount_delta;/* superblock agcount change */
int64_t t_imaxpct_delta;/* superblock imaxpct change */
int64_t t_rextsize_delta;/* superblock rextsize chg */
int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
int64_t t_rblocks_delta;/* superblock rblocks change */
int64_t t_rextents_delta;/* superblocks rextents chg */
int64_t t_rextslog_delta;/* superblocks rextslog chg */
unsigned int t_items_free; /* log item descs free */
xfs_log_item_chunk_t t_items; /* first log item desc chunk */
xfs_trans_header_t t_header; /* header for in-log trans */
unsigned int t_busy_free; /* busy descs free */
xfs_log_busy_chunk_t t_busy; /* busy/async free blocks */
unsigned long t_pflags; /* saved process flags state */
} xfs_trans_t;
#endif /* __KERNEL__ */
#define XFS_TRANS_MAGIC 0x5452414E /* 'TRAN' */
/*
* Values for t_flags.
@ -906,6 +750,157 @@ typedef struct xfs_trans {
#define XFS_DQUOT_REF 1
#ifdef __KERNEL__
struct xfs_buf;
struct xfs_buftarg;
struct xfs_efd_log_item;
struct xfs_efi_log_item;
struct xfs_inode;
struct xfs_item_ops;
struct xfs_log_iovec;
struct xfs_log_item_desc;
struct xfs_mount;
struct xfs_trans;
struct xfs_dquot_acct;
typedef struct xfs_log_item {
struct list_head li_ail; /* AIL pointers */
xfs_lsn_t li_lsn; /* last on-disk lsn */
struct xfs_log_item_desc *li_desc; /* ptr to current desc*/
struct xfs_mount *li_mountp; /* ptr to fs mount */
struct xfs_ail *li_ailp; /* ptr to AIL */
uint li_type; /* item type */
uint li_flags; /* misc flags */
struct xfs_log_item *li_bio_list; /* buffer item list */
void (*li_cb)(struct xfs_buf *,
struct xfs_log_item *);
/* buffer item iodone */
/* callback func */
struct xfs_item_ops *li_ops; /* function list */
} xfs_log_item_t;
#define XFS_LI_IN_AIL 0x1
#define XFS_LI_ABORTED 0x2
typedef struct xfs_item_ops {
uint (*iop_size)(xfs_log_item_t *);
void (*iop_format)(xfs_log_item_t *, struct xfs_log_iovec *);
void (*iop_pin)(xfs_log_item_t *);
void (*iop_unpin)(xfs_log_item_t *, int);
void (*iop_unpin_remove)(xfs_log_item_t *, struct xfs_trans *);
uint (*iop_trylock)(xfs_log_item_t *);
void (*iop_unlock)(xfs_log_item_t *);
xfs_lsn_t (*iop_committed)(xfs_log_item_t *, xfs_lsn_t);
void (*iop_push)(xfs_log_item_t *);
void (*iop_pushbuf)(xfs_log_item_t *);
void (*iop_committing)(xfs_log_item_t *, xfs_lsn_t);
} xfs_item_ops_t;
#define IOP_SIZE(ip) (*(ip)->li_ops->iop_size)(ip)
#define IOP_FORMAT(ip,vp) (*(ip)->li_ops->iop_format)(ip, vp)
#define IOP_PIN(ip) (*(ip)->li_ops->iop_pin)(ip)
#define IOP_UNPIN(ip, flags) (*(ip)->li_ops->iop_unpin)(ip, flags)
#define IOP_UNPIN_REMOVE(ip,tp) (*(ip)->li_ops->iop_unpin_remove)(ip, tp)
#define IOP_TRYLOCK(ip) (*(ip)->li_ops->iop_trylock)(ip)
#define IOP_UNLOCK(ip) (*(ip)->li_ops->iop_unlock)(ip)
#define IOP_COMMITTED(ip, lsn) (*(ip)->li_ops->iop_committed)(ip, lsn)
#define IOP_PUSH(ip) (*(ip)->li_ops->iop_push)(ip)
#define IOP_PUSHBUF(ip) (*(ip)->li_ops->iop_pushbuf)(ip)
#define IOP_COMMITTING(ip, lsn) (*(ip)->li_ops->iop_committing)(ip, lsn)
/*
* Return values for the IOP_TRYLOCK() routines.
*/
#define XFS_ITEM_SUCCESS 0
#define XFS_ITEM_PINNED 1
#define XFS_ITEM_LOCKED 2
#define XFS_ITEM_FLUSHING 3
#define XFS_ITEM_PUSHBUF 4
/*
* This structure is used to maintain a list of block ranges that have been
* freed in the transaction. The ranges are listed in the perag[] busy list
* between when they're freed and the transaction is committed to disk.
*/
typedef struct xfs_log_busy_slot {
xfs_agnumber_t lbc_ag;
ushort lbc_idx; /* index in perag.busy[] */
} xfs_log_busy_slot_t;
#define XFS_LBC_NUM_SLOTS 31
typedef struct xfs_log_busy_chunk {
struct xfs_log_busy_chunk *lbc_next;
uint lbc_free; /* free slots bitmask */
ushort lbc_unused; /* first unused */
xfs_log_busy_slot_t lbc_busy[XFS_LBC_NUM_SLOTS];
} xfs_log_busy_chunk_t;
#define XFS_LBC_MAX_SLOT (XFS_LBC_NUM_SLOTS - 1)
#define XFS_LBC_FREEMASK ((1U << XFS_LBC_NUM_SLOTS) - 1)
#define XFS_LBC_INIT(cp) ((cp)->lbc_free = XFS_LBC_FREEMASK)
#define XFS_LBC_CLAIM(cp, slot) ((cp)->lbc_free &= ~(1 << (slot)))
#define XFS_LBC_SLOT(cp, slot) (&((cp)->lbc_busy[(slot)]))
#define XFS_LBC_VACANCY(cp) (((cp)->lbc_free) & XFS_LBC_FREEMASK)
#define XFS_LBC_ISFREE(cp, slot) ((cp)->lbc_free & (1 << (slot)))
/*
* This is the type of function which can be given to xfs_trans_callback()
* to be called upon the transaction's commit to disk.
*/
typedef void (*xfs_trans_callback_t)(struct xfs_trans *, void *);
/*
* This is the structure maintained for every active transaction.
*/
typedef struct xfs_trans {
unsigned int t_magic; /* magic number */
xfs_log_callback_t t_logcb; /* log callback struct */
unsigned int t_type; /* transaction type */
unsigned int t_log_res; /* amt of log space resvd */
unsigned int t_log_count; /* count for perm log res */
unsigned int t_blk_res; /* # of blocks resvd */
unsigned int t_blk_res_used; /* # of resvd blocks used */
unsigned int t_rtx_res; /* # of rt extents resvd */
unsigned int t_rtx_res_used; /* # of resvd rt extents used */
xfs_log_ticket_t t_ticket; /* log mgr ticket */
xfs_lsn_t t_lsn; /* log seq num of start of
* transaction. */
xfs_lsn_t t_commit_lsn; /* log seq num of end of
* transaction. */
struct xfs_mount *t_mountp; /* ptr to fs mount struct */
struct xfs_dquot_acct *t_dqinfo; /* acctg info for dquots */
xfs_trans_callback_t t_callback; /* transaction callback */
void *t_callarg; /* callback arg */
unsigned int t_flags; /* misc flags */
int64_t t_icount_delta; /* superblock icount change */
int64_t t_ifree_delta; /* superblock ifree change */
int64_t t_fdblocks_delta; /* superblock fdblocks chg */
int64_t t_res_fdblocks_delta; /* on-disk only chg */
int64_t t_frextents_delta;/* superblock freextents chg*/
int64_t t_res_frextents_delta; /* on-disk only chg */
#ifdef DEBUG
int64_t t_ag_freeblks_delta; /* debugging counter */
int64_t t_ag_flist_delta; /* debugging counter */
int64_t t_ag_btree_delta; /* debugging counter */
#endif
int64_t t_dblocks_delta;/* superblock dblocks change */
int64_t t_agcount_delta;/* superblock agcount change */
int64_t t_imaxpct_delta;/* superblock imaxpct change */
int64_t t_rextsize_delta;/* superblock rextsize chg */
int64_t t_rbmblocks_delta;/* superblock rbmblocks chg */
int64_t t_rblocks_delta;/* superblock rblocks change */
int64_t t_rextents_delta;/* superblocks rextents chg */
int64_t t_rextslog_delta;/* superblocks rextslog chg */
unsigned int t_items_free; /* log item descs free */
xfs_log_item_chunk_t t_items; /* first log item desc chunk */
xfs_trans_header_t t_header; /* header for in-log trans */
unsigned int t_busy_free; /* busy descs free */
xfs_log_busy_chunk_t t_busy; /* busy/async free blocks */
unsigned long t_pflags; /* saved process flags state */
} xfs_trans_t;
/*
* XFS transaction mechanism exported interfaces that are
* actually macros.
@ -928,7 +923,6 @@ typedef struct xfs_trans {
/*
* XFS transaction mechanism exported interfaces.
*/
void xfs_trans_init(struct xfs_mount *);
xfs_trans_t *xfs_trans_alloc(struct xfs_mount *, uint);
xfs_trans_t *_xfs_trans_alloc(struct xfs_mount *, uint);
xfs_trans_t *xfs_trans_dup(xfs_trans_t *);
@ -975,13 +969,8 @@ int _xfs_trans_commit(xfs_trans_t *,
int *);
#define xfs_trans_commit(tp, flags) _xfs_trans_commit(tp, flags, NULL)
void xfs_trans_cancel(xfs_trans_t *, int);
int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
int xfs_trans_ail_init(struct xfs_mount *);
void xfs_trans_ail_destroy(struct xfs_mount *);
void xfs_trans_push_ail(struct xfs_mount *, xfs_lsn_t);
xfs_lsn_t xfs_trans_tail_ail(struct xfs_mount *);
void xfs_trans_unlocked_item(struct xfs_mount *,
xfs_log_item_t *);
xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
xfs_agnumber_t ag,
xfs_extlen_t idx);
@ -990,4 +979,7 @@ extern kmem_zone_t *xfs_trans_zone;
#endif /* __KERNEL__ */
void xfs_trans_init(struct xfs_mount *);
int xfs_trans_roll(struct xfs_trans **, struct xfs_inode *);
#endif /* __XFS_TRANS_H__ */

362
fs/xfs/xfs_trans_ail.c
Просмотреть файл

@ -1,5 +1,6 @@
/*
* Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
* Copyright (c) 2008 Dave Chinner
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or
@ -28,13 +29,13 @@
#include "xfs_trans_priv.h"
#include "xfs_error.h"
STATIC void xfs_ail_insert(xfs_ail_t *, xfs_log_item_t *);
STATIC xfs_log_item_t * xfs_ail_delete(xfs_ail_t *, xfs_log_item_t *);
STATIC xfs_log_item_t * xfs_ail_min(xfs_ail_t *);
STATIC xfs_log_item_t * xfs_ail_next(xfs_ail_t *, xfs_log_item_t *);
STATIC void xfs_ail_insert(struct xfs_ail *, xfs_log_item_t *);
STATIC xfs_log_item_t * xfs_ail_delete(struct xfs_ail *, xfs_log_item_t *);
STATIC xfs_log_item_t * xfs_ail_min(struct xfs_ail *);
STATIC xfs_log_item_t * xfs_ail_next(struct xfs_ail *, xfs_log_item_t *);
#ifdef DEBUG
STATIC void xfs_ail_check(xfs_ail_t *, xfs_log_item_t *);
STATIC void xfs_ail_check(struct xfs_ail *, xfs_log_item_t *);
#else
#define xfs_ail_check(a,l)
#endif /* DEBUG */
@ -50,20 +51,20 @@ STATIC void xfs_ail_check(xfs_ail_t *, xfs_log_item_t *);
* lsn of the last item in the AIL.
*/
xfs_lsn_t
xfs_trans_tail_ail(
xfs_mount_t *mp)
xfs_trans_ail_tail(
struct xfs_ail *ailp)
{
xfs_lsn_t lsn;
xfs_log_item_t *lip;
spin_lock(&mp->m_ail_lock);
lip = xfs_ail_min(&mp->m_ail);
spin_lock(&ailp->xa_lock);
lip = xfs_ail_min(ailp);
if (lip == NULL) {
lsn = (xfs_lsn_t)0;
} else {
lsn = lip->li_lsn;
}
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
return lsn;
}
@ -85,16 +86,125 @@ xfs_trans_tail_ail(
* any of the objects, so the lock is not needed.
*/
void
xfs_trans_push_ail(
xfs_mount_t *mp,
xfs_lsn_t threshold_lsn)
xfs_trans_ail_push(
struct xfs_ail *ailp,
xfs_lsn_t threshold_lsn)
{
xfs_log_item_t *lip;
xfs_log_item_t *lip;
lip = xfs_ail_min(&mp->m_ail);
if (lip && !XFS_FORCED_SHUTDOWN(mp)) {
if (XFS_LSN_CMP(threshold_lsn, mp->m_ail.xa_target) > 0)
xfsaild_wakeup(mp, threshold_lsn);
lip = xfs_ail_min(ailp);
if (lip && !XFS_FORCED_SHUTDOWN(ailp->xa_mount)) {
if (XFS_LSN_CMP(threshold_lsn, ailp->xa_target) > 0)
xfsaild_wakeup(ailp, threshold_lsn);
}
}
/*
* AIL traversal cursor initialisation.
*
* The cursor keeps track of where our current traversal is up
* to by tracking the next ƣtem in the list for us. However, for
* this to be safe, removing an object from the AIL needs to invalidate
* any cursor that points to it. hence the traversal cursor needs to
* be linked to the struct xfs_ail so that deletion can search all the
* active cursors for invalidation.
*
* We don't link the push cursor because it is embedded in the struct
* xfs_ail and hence easily findable.
*/
STATIC void
xfs_trans_ail_cursor_init(
struct xfs_ail *ailp,
struct xfs_ail_cursor *cur)
{
cur->item = NULL;
if (cur == &ailp->xa_cursors)
return;
cur->next = ailp->xa_cursors.next;
ailp->xa_cursors.next = cur;
}
/*
* Set the cursor to the next item, because when we look
* up the cursor the current item may have been freed.
*/
STATIC void
xfs_trans_ail_cursor_set(
struct xfs_ail *ailp,
struct xfs_ail_cursor *cur,
struct xfs_log_item *lip)
{
if (lip)
cur->item = xfs_ail_next(ailp, lip);
}
/*
* Get the next item in the traversal and advance the cursor.
* If the cursor was invalidated (inidicated by a lip of 1),
* restart the traversal.
*/
struct xfs_log_item *
xfs_trans_ail_cursor_next(
struct xfs_ail *ailp,
struct xfs_ail_cursor *cur)
{
struct xfs_log_item *lip = cur->item;
if ((__psint_t)lip & 1)
lip = xfs_ail_min(ailp);
xfs_trans_ail_cursor_set(ailp, cur, lip);
return lip;
}
/*
* Now that the traversal is complete, we need to remove the cursor
* from the list of traversing cursors. Avoid removing the embedded
* push cursor, but use the fact it is alway present to make the
* list deletion simple.
*/
void
xfs_trans_ail_cursor_done(
struct xfs_ail *ailp,
struct xfs_ail_cursor *done)
{
struct xfs_ail_cursor *prev = NULL;
struct xfs_ail_cursor *cur;
done->item = NULL;
if (done == &ailp->xa_cursors)
return;
prev = &ailp->xa_cursors;
for (cur = prev->next; cur; prev = cur, cur = prev->next) {
if (cur == done) {
prev->next = cur->next;
break;
}
}
ASSERT(cur);
}
/*
* Invalidate any cursor that is pointing to this item. This is
* called when an item is removed from the AIL. Any cursor pointing
* to this object is now invalid and the traversal needs to be
* terminated so it doesn't reference a freed object. We set the
* cursor item to a value of 1 so we can distinguish between an
* invalidation and the end of the list when getting the next item
* from the cursor.
*/
STATIC void
xfs_trans_ail_cursor_clear(
struct xfs_ail *ailp,
struct xfs_log_item *lip)
{
struct xfs_ail_cursor *cur;
/* need to search all cursors */
for (cur = &ailp->xa_cursors; cur; cur = cur->next) {
if (cur->item == lip)
cur->item = (struct xfs_log_item *)
((__psint_t)cur->item | 1);
}
}
@ -103,25 +213,27 @@ xfs_trans_push_ail(
* Return the current tree generation number for use
* in calls to xfs_trans_next_ail().
*/
STATIC xfs_log_item_t *
xfs_trans_first_push_ail(
xfs_mount_t *mp,
int *gen,
xfs_lsn_t lsn)
xfs_log_item_t *
xfs_trans_ail_cursor_first(
struct xfs_ail *ailp,
struct xfs_ail_cursor *cur,
xfs_lsn_t lsn)
{
xfs_log_item_t *lip;
xfs_log_item_t *lip;
lip = xfs_ail_min(&mp->m_ail);
*gen = (int)mp->m_ail.xa_gen;
xfs_trans_ail_cursor_init(ailp, cur);
lip = xfs_ail_min(ailp);
if (lsn == 0)
return lip;
goto out;
list_for_each_entry(lip, &mp->m_ail.xa_ail, li_ail) {
list_for_each_entry(lip, &ailp->xa_ail, li_ail) {
if (XFS_LSN_CMP(lip->li_lsn, lsn) >= 0)
return lip;
goto out;
}
return NULL;
lip = NULL;
out:
xfs_trans_ail_cursor_set(ailp, cur, lip);
return lip;
}
/*
@ -129,29 +241,29 @@ xfs_trans_first_push_ail(
*/
long
xfsaild_push(
xfs_mount_t *mp,
struct xfs_ail *ailp,
xfs_lsn_t *last_lsn)
{
long tout = 1000; /* milliseconds */
xfs_lsn_t last_pushed_lsn = *last_lsn;
xfs_lsn_t target = mp->m_ail.xa_target;
xfs_lsn_t target = ailp->xa_target;
xfs_lsn_t lsn;
xfs_log_item_t *lip;
int gen;
int restarts;
int flush_log, count, stuck;
xfs_mount_t *mp = ailp->xa_mount;
struct xfs_ail_cursor *cur = &ailp->xa_cursors;
#define XFS_TRANS_PUSH_AIL_RESTARTS 10
spin_lock(&mp->m_ail_lock);
lip = xfs_trans_first_push_ail(mp, &gen, *last_lsn);
spin_lock(&ailp->xa_lock);
xfs_trans_ail_cursor_init(ailp, cur);
lip = xfs_trans_ail_cursor_first(ailp, cur, *last_lsn);
if (!lip || XFS_FORCED_SHUTDOWN(mp)) {
/*
* AIL is empty or our push has reached the end.
*/
spin_unlock(&mp->m_ail_lock);
xfs_trans_ail_cursor_done(ailp, cur);
spin_unlock(&ailp->xa_lock);
last_pushed_lsn = 0;
goto out;
return tout;
}
XFS_STATS_INC(xs_push_ail);
@ -169,7 +281,7 @@ xfsaild_push(
*/
tout = 10;
lsn = lip->li_lsn;
flush_log = stuck = count = restarts = 0;
flush_log = stuck = count = 0;
while ((XFS_LSN_CMP(lip->li_lsn, target) < 0)) {
int lock_result;
/*
@ -184,7 +296,7 @@ xfsaild_push(
* skip to the next item in the list.
*/
lock_result = IOP_TRYLOCK(lip);
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
switch (lock_result) {
case XFS_ITEM_SUCCESS:
XFS_STATS_INC(xs_push_ail_success);
@ -221,7 +333,7 @@ xfsaild_push(
break;
}
spin_lock(&mp->m_ail_lock);
spin_lock(&ailp->xa_lock);
/* should we bother continuing? */
if (XFS_FORCED_SHUTDOWN(mp))
break;
@ -244,14 +356,13 @@ xfsaild_push(
if (stuck > 100)
break;
lip = xfs_trans_next_ail(mp, lip, &gen, &restarts);
lip = xfs_trans_ail_cursor_next(ailp, cur);
if (lip == NULL)
break;
if (restarts > XFS_TRANS_PUSH_AIL_RESTARTS)
break;
lsn = lip->li_lsn;
}
spin_unlock(&mp->m_ail_lock);
xfs_trans_ail_cursor_done(ailp, cur);
spin_unlock(&ailp->xa_lock);
if (flush_log) {
/*
@ -274,8 +385,7 @@ xfsaild_push(
*/
tout += 20;
last_pushed_lsn = 0;
} else if ((restarts > XFS_TRANS_PUSH_AIL_RESTARTS) ||
((stuck * 100) / count > 90)) {
} else if ((stuck * 100) / count > 90) {
/*
* Either there is a lot of contention on the AIL or we
* are stuck due to operations in progress. "Stuck" in this
@ -287,7 +397,6 @@ xfsaild_push(
*/
tout += 10;
}
out:
*last_lsn = last_pushed_lsn;
return tout;
} /* xfsaild_push */
@ -303,7 +412,7 @@ out:
*/
void
xfs_trans_unlocked_item(
xfs_mount_t *mp,
struct xfs_ail *ailp,
xfs_log_item_t *lip)
{
xfs_log_item_t *min_lip;
@ -315,7 +424,7 @@ xfs_trans_unlocked_item(
* over some potentially valid data.
*/
if (!(lip->li_flags & XFS_LI_IN_AIL) ||
XFS_FORCED_SHUTDOWN(mp)) {
XFS_FORCED_SHUTDOWN(ailp->xa_mount)) {
return;
}
@ -331,10 +440,10 @@ xfs_trans_unlocked_item(
* the call to xfs_log_move_tail() doesn't do anything if there's
* not enough free space to wake people up so we're safe calling it.
*/
min_lip = xfs_ail_min(&mp->m_ail);
min_lip = xfs_ail_min(ailp);
if (min_lip == lip)
xfs_log_move_tail(mp, 1);
xfs_log_move_tail(ailp->xa_mount, 1);
} /* xfs_trans_unlocked_item */
@ -347,41 +456,37 @@ xfs_trans_unlocked_item(
* we move in the AIL is the minimum one, update the tail lsn in the
* log manager.
*
* Increment the AIL's generation count to indicate that the tree
* has changed.
*
* This function must be called with the AIL lock held. The lock
* is dropped before returning.
*/
void
xfs_trans_update_ail(
xfs_mount_t *mp,
xfs_trans_ail_update(
struct xfs_ail *ailp,
xfs_log_item_t *lip,
xfs_lsn_t lsn) __releases(mp->m_ail_lock)
xfs_lsn_t lsn) __releases(ailp->xa_lock)
{
xfs_log_item_t *dlip=NULL;
xfs_log_item_t *dlip = NULL;
xfs_log_item_t *mlip; /* ptr to minimum lip */
mlip = xfs_ail_min(&mp->m_ail);
mlip = xfs_ail_min(ailp);
if (lip->li_flags & XFS_LI_IN_AIL) {
dlip = xfs_ail_delete(&mp->m_ail, lip);
dlip = xfs_ail_delete(ailp, lip);
ASSERT(dlip == lip);
xfs_trans_ail_cursor_clear(ailp, dlip);
} else {
lip->li_flags |= XFS_LI_IN_AIL;
}
lip->li_lsn = lsn;
xfs_ail_insert(&mp->m_ail, lip);
mp->m_ail.xa_gen++;
xfs_ail_insert(ailp, lip);
if (mlip == dlip) {
mlip = xfs_ail_min(&mp->m_ail);
spin_unlock(&mp->m_ail_lock);
xfs_log_move_tail(mp, mlip->li_lsn);
mlip = xfs_ail_min(ailp);
spin_unlock(&ailp->xa_lock);
xfs_log_move_tail(ailp->xa_mount, mlip->li_lsn);
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
@ -403,29 +508,30 @@ xfs_trans_update_ail(
* is dropped before returning.
*/
void
xfs_trans_delete_ail(
xfs_mount_t *mp,
xfs_log_item_t *lip) __releases(mp->m_ail_lock)
xfs_trans_ail_delete(
struct xfs_ail *ailp,
xfs_log_item_t *lip) __releases(ailp->xa_lock)
{
xfs_log_item_t *dlip;
xfs_log_item_t *mlip;
if (lip->li_flags & XFS_LI_IN_AIL) {
mlip = xfs_ail_min(&mp->m_ail);
dlip = xfs_ail_delete(&mp->m_ail, lip);
mlip = xfs_ail_min(ailp);
dlip = xfs_ail_delete(ailp, lip);
ASSERT(dlip == lip);
xfs_trans_ail_cursor_clear(ailp, dlip);
lip->li_flags &= ~XFS_LI_IN_AIL;
lip->li_lsn = 0;
mp->m_ail.xa_gen++;
if (mlip == dlip) {
mlip = xfs_ail_min(&mp->m_ail);
spin_unlock(&mp->m_ail_lock);
xfs_log_move_tail(mp, (mlip ? mlip->li_lsn : 0));
mlip = xfs_ail_min(ailp);
spin_unlock(&ailp->xa_lock);
xfs_log_move_tail(ailp->xa_mount,
(mlip ? mlip->li_lsn : 0));
} else {
spin_unlock(&mp->m_ail_lock);
spin_unlock(&ailp->xa_lock);
}
}
else {
@ -433,13 +539,13 @@ xfs_trans_delete_ail(
* If the file system is not being shutdown, we are in
* serious trouble if we get to this stage.
*/
if (XFS_FORCED_SHUTDOWN(mp))
spin_unlock(&mp->m_ail_lock);
else {
struct xfs_mount *mp = ailp->xa_mount;
spin_unlock(&ailp->xa_lock);
if (!XFS_FORCED_SHUTDOWN(mp)) {
xfs_cmn_err(XFS_PTAG_AILDELETE, CE_ALERT, mp,
"%s: attempting to delete a log item that is not in the AIL",
__func__);
spin_unlock(&mp->m_ail_lock);
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
}
}
@ -447,56 +553,6 @@ xfs_trans_delete_ail(
/*
* Return the item in the AIL with the smallest lsn.
* Return the current tree generation number for use
* in calls to xfs_trans_next_ail().
*/
xfs_log_item_t *
xfs_trans_first_ail(
xfs_mount_t *mp,
int *gen)
{
xfs_log_item_t *lip;
lip = xfs_ail_min(&mp->m_ail);
*gen = (int)mp->m_ail.xa_gen;
return lip;
}
/*
* If the generation count of the tree has not changed since the
* caller last took something from the AIL, then return the elmt
* in the tree which follows the one given. If the count has changed,
* then return the minimum elmt of the AIL and bump the restarts counter
* if one is given.
*/
xfs_log_item_t *
xfs_trans_next_ail(
xfs_mount_t *mp,
xfs_log_item_t *lip,
int *gen,
int *restarts)
{
xfs_log_item_t *nlip;
ASSERT(mp && lip && gen);
if (mp->m_ail.xa_gen == *gen) {
nlip = xfs_ail_next(&mp->m_ail, lip);
} else {
nlip = xfs_ail_min(&mp->m_ail);
*gen = (int)mp->m_ail.xa_gen;
if (restarts != NULL) {
XFS_STATS_INC(xs_push_ail_restarts);
(*restarts)++;
}
}
return (nlip);
}
/*
* The active item list (AIL) is a doubly linked list of log
* items sorted by ascending lsn. The base of the list is
@ -515,15 +571,35 @@ int
xfs_trans_ail_init(
xfs_mount_t *mp)
{
INIT_LIST_HEAD(&mp->m_ail.xa_ail);
return xfsaild_start(mp);
struct xfs_ail *ailp;
int error;
ailp = kmem_zalloc(sizeof(struct xfs_ail), KM_MAYFAIL);
if (!ailp)
return ENOMEM;
ailp->xa_mount = mp;
INIT_LIST_HEAD(&ailp->xa_ail);
spin_lock_init(&ailp->xa_lock);
error = xfsaild_start(ailp);
if (error)
goto out_free_ailp;
mp->m_ail = ailp;
return 0;
out_free_ailp:
kmem_free(ailp);
return error;
}
void
xfs_trans_ail_destroy(
xfs_mount_t *mp)
{
xfsaild_stop(mp);
struct xfs_ail *ailp = mp->m_ail;
xfsaild_stop(ailp);
kmem_free(ailp);
}
/*
@ -534,7 +610,7 @@ xfs_trans_ail_destroy(
*/
STATIC void
xfs_ail_insert(
xfs_ail_t *ailp,
struct xfs_ail *ailp,
xfs_log_item_t *lip)
/* ARGSUSED */
{
@ -568,7 +644,7 @@ xfs_ail_insert(
/*ARGSUSED*/
STATIC xfs_log_item_t *
xfs_ail_delete(
xfs_ail_t *ailp,
struct xfs_ail *ailp,
xfs_log_item_t *lip)
/* ARGSUSED */
{
@ -585,7 +661,7 @@ xfs_ail_delete(
*/
STATIC xfs_log_item_t *
xfs_ail_min(
xfs_ail_t *ailp)
struct xfs_ail *ailp)
/* ARGSUSED */
{
if (list_empty(&ailp->xa_ail))
@ -601,7 +677,7 @@ xfs_ail_min(
*/
STATIC xfs_log_item_t *
xfs_ail_next(
xfs_ail_t *ailp,
struct xfs_ail *ailp,
xfs_log_item_t *lip)
/* ARGSUSED */
{
@ -617,7 +693,7 @@ xfs_ail_next(
*/
STATIC void
xfs_ail_check(
xfs_ail_t *ailp,
struct xfs_ail *ailp,
xfs_log_item_t *lip)
{
xfs_log_item_t *prev_lip;

7
fs/xfs/xfs_trans_buf.c
Просмотреть файл

@ -527,9 +527,8 @@ xfs_trans_brelse(xfs_trans_t *tp,
lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *);
if (lip->li_type == XFS_LI_BUF) {
bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*);
xfs_trans_unlocked_item(
bip->bli_item.li_mountp,
lip);
xfs_trans_unlocked_item(bip->bli_item.li_ailp,
lip);
}
}
xfs_buf_relse(bp);
@ -626,7 +625,7 @@ xfs_trans_brelse(xfs_trans_t *tp,
* tell the AIL that the buffer is being unlocked.
*/
if (bip != NULL) {
xfs_trans_unlocked_item(bip->bli_item.li_mountp,
xfs_trans_unlocked_item(bip->bli_item.li_ailp,
(xfs_log_item_t*)bip);
}

10
fs/xfs/xfs_trans_item.c
Просмотреть файл

@ -22,6 +22,14 @@
#include "xfs_inum.h"
#include "xfs_trans.h"
#include "xfs_trans_priv.h"
/* XXX: from here down needed until struct xfs_trans has it's own ailp */
#include "xfs_bit.h"
#include "xfs_buf_item.h"
#include "xfs_sb.h"
#include "xfs_ag.h"
#include "xfs_dir2.h"
#include "xfs_dmapi.h"
#include "xfs_mount.h"
STATIC int xfs_trans_unlock_chunk(xfs_log_item_chunk_t *,
int, int, xfs_lsn_t);
@ -79,6 +87,7 @@ xfs_trans_add_item(xfs_trans_t *tp, xfs_log_item_t *lip)
lidp->lid_size = 0;
lip->li_desc = lidp;
lip->li_mountp = tp->t_mountp;
lip->li_ailp = tp->t_mountp->m_ail;
return lidp;
}
@ -120,6 +129,7 @@ xfs_trans_add_item(xfs_trans_t *tp, xfs_log_item_t *lip)
lidp->lid_size = 0;
lip->li_desc = lidp;
lip->li_mountp = tp->t_mountp;
lip->li_ailp = tp->t_mountp->m_ail;
return lidp;
}

100
fs/xfs/xfs_trans_priv.h
Просмотреть файл

@ -44,25 +44,93 @@ xfs_log_busy_slot_t *xfs_trans_add_busy(xfs_trans_t *tp,
xfs_extlen_t idx);
/*
* From xfs_trans_ail.c
* AIL traversal cursor.
*
* Rather than using a generation number for detecting changes in the ail, use
* a cursor that is protected by the ail lock. The aild cursor exists in the
* struct xfs_ail, but other traversals can declare it on the stack and link it
* to the ail list.
*
* When an object is deleted from or moved int the AIL, the cursor list is
* searched to see if the object is a designated cursor item. If it is, it is
* deleted from the cursor so that the next time the cursor is used traversal
* will return to the start.
*
* This means a traversal colliding with a removal will cause a restart of the
* list scan, rather than any insertion or deletion anywhere in the list. The
* low bit of the item pointer is set if the cursor has been invalidated so
* that we can tell the difference between invalidation and reaching the end
* of the list to trigger traversal restarts.
*/
void xfs_trans_update_ail(struct xfs_mount *mp,
struct xfs_log_item *lip, xfs_lsn_t lsn)
__releases(mp->m_ail_lock);
void xfs_trans_delete_ail(struct xfs_mount *mp,
struct xfs_log_item *lip)
__releases(mp->m_ail_lock);
struct xfs_log_item *xfs_trans_first_ail(struct xfs_mount *, int *);
struct xfs_log_item *xfs_trans_next_ail(struct xfs_mount *,
struct xfs_log_item *, int *, int *);
struct xfs_ail_cursor {
struct xfs_ail_cursor *next;
struct xfs_log_item *item;
};
/*
* AIL push thread support
* Private AIL structures.
*
* Eventually we need to drive the locking in here as well.
*/
long xfsaild_push(struct xfs_mount *, xfs_lsn_t *);
void xfsaild_wakeup(struct xfs_mount *, xfs_lsn_t);
int xfsaild_start(struct xfs_mount *);
void xfsaild_stop(struct xfs_mount *);
struct xfs_ail {
struct xfs_mount *xa_mount;
struct list_head xa_ail;
uint xa_gen;
struct task_struct *xa_task;
xfs_lsn_t xa_target;
struct xfs_ail_cursor xa_cursors;
spinlock_t xa_lock;
};
/*
* From xfs_trans_ail.c
*/
void xfs_trans_ail_update(struct xfs_ail *ailp,
struct xfs_log_item *lip, xfs_lsn_t lsn)
__releases(ailp->xa_lock);
void xfs_trans_ail_delete(struct xfs_ail *ailp,
struct xfs_log_item *lip)
__releases(ailp->xa_lock);
void xfs_trans_ail_push(struct xfs_ail *, xfs_lsn_t);
void xfs_trans_unlocked_item(struct xfs_ail *,
xfs_log_item_t *);
xfs_lsn_t xfs_trans_ail_tail(struct xfs_ail *ailp);
struct xfs_log_item *xfs_trans_ail_cursor_first(struct xfs_ail *ailp,
struct xfs_ail_cursor *cur,
xfs_lsn_t lsn);
struct xfs_log_item *xfs_trans_ail_cursor_next(struct xfs_ail *ailp,
struct xfs_ail_cursor *cur);
void xfs_trans_ail_cursor_done(struct xfs_ail *ailp,
struct xfs_ail_cursor *cur);
long xfsaild_push(struct xfs_ail *, xfs_lsn_t *);
void xfsaild_wakeup(struct xfs_ail *, xfs_lsn_t);
int xfsaild_start(struct xfs_ail *);
void xfsaild_stop(struct xfs_ail *);
#if BITS_PER_LONG != 64
static inline void
xfs_trans_ail_copy_lsn(
struct xfs_ail *ailp,
xfs_lsn_t *dst,
xfs_lsn_t *src)
{
ASSERT(sizeof(xfs_lsn_t) == 8); /* don't lock if it shrinks */
spin_lock(&ailp->xa_lock);
*dst = *src;
spin_unlock(&ailp->xa_lock);
}
#else
static inline void
xfs_trans_ail_copy_lsn(
struct xfs_ail *ailp,
xfs_lsn_t *dst,
xfs_lsn_t *src)
{
ASSERT(sizeof(xfs_lsn_t) == 8);
*dst = *src;
}
#endif
#endif /* __XFS_TRANS_PRIV_H__ */

617
fs/xfs/xfs_vfsops.c
Просмотреть файл

@ -49,71 +49,15 @@
#include "xfs_extfree_item.h"
#include "xfs_acl.h"
#include "xfs_attr.h"
#include "xfs_clnt.h"
#include "xfs_mru_cache.h"
#include "xfs_filestream.h"
#include "xfs_fsops.h"
#include "xfs_vnodeops.h"
#include "xfs_vfsops.h"
#include "xfs_utils.h"
#include "xfs_sync.h"
STATIC void
xfs_quiesce_fs(
xfs_mount_t *mp)
{
int count = 0, pincount;
xfs_flush_buftarg(mp->m_ddev_targp, 0);
xfs_finish_reclaim_all(mp, 0);
/* This loop must run at least twice.
* The first instance of the loop will flush
* most meta data but that will generate more
* meta data (typically directory updates).
* Which then must be flushed and logged before
* we can write the unmount record.
*/
do {
xfs_syncsub(mp, SYNC_INODE_QUIESCE, NULL);
pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
if (!pincount) {
delay(50);
count++;
}
} while (count < 2);
}
/*
* Second stage of a quiesce. The data is already synced, now we have to take
* care of the metadata. New transactions are already blocked, so we need to
* wait for any remaining transactions to drain out before proceding.
*/
void
xfs_attr_quiesce(
xfs_mount_t *mp)
{
int error = 0;
/* wait for all modifications to complete */
while (atomic_read(&mp->m_active_trans) > 0)
delay(100);
/* flush inodes and push all remaining buffers out to disk */
xfs_quiesce_fs(mp);
ASSERT_ALWAYS(atomic_read(&mp->m_active_trans) == 0);
/* Push the superblock and write an unmount record */
error = xfs_log_sbcount(mp, 1);
if (error)
xfs_fs_cmn_err(CE_WARN, mp,
"xfs_attr_quiesce: failed to log sb changes. "
"Frozen image may not be consistent.");
xfs_log_unmount_write(mp);
xfs_unmountfs_writesb(mp);
}
/*
* xfs_unmount_flush implements a set of flush operation on special
* inodes, which are needed as a separate set of operations so that
@ -196,562 +140,3 @@ fscorrupt_out2:
return XFS_ERROR(EFSCORRUPTED);
}
/*
* xfs_sync flushes any pending I/O to file system vfsp.
*
* This routine is called by vfs_sync() to make sure that things make it
* out to disk eventually, on sync() system calls to flush out everything,
* and when the file system is unmounted. For the vfs_sync() case, all
* we really need to do is sync out the log to make all of our meta-data
* updates permanent (except for timestamps). For calls from pflushd(),
* dirty pages are kept moving by calling pdflush() on the inodes
* containing them. We also flush the inodes that we can lock without
* sleeping and the superblock if we can lock it without sleeping from
* vfs_sync() so that items at the tail of the log are always moving out.
*
* Flags:
* SYNC_BDFLUSH - We're being called from vfs_sync() so we don't want
* to sleep if we can help it. All we really need
* to do is ensure that the log is synced at least
* periodically. We also push the inodes and
* superblock if we can lock them without sleeping
* and they are not pinned.
* SYNC_ATTR - We need to flush the inodes. If SYNC_BDFLUSH is not
* set, then we really want to lock each inode and flush
* it.
* SYNC_WAIT - All the flushes that take place in this call should
* be synchronous.
* SYNC_DELWRI - This tells us to push dirty pages associated with
* inodes. SYNC_WAIT and SYNC_BDFLUSH are used to
* determine if they should be flushed sync, async, or
* delwri.
* SYNC_CLOSE - This flag is passed when the system is being
* unmounted. We should sync and invalidate everything.
* SYNC_FSDATA - This indicates that the caller would like to make
* sure the superblock is safe on disk. We can ensure
* this by simply making sure the log gets flushed
* if SYNC_BDFLUSH is set, and by actually writing it
* out otherwise.
* SYNC_IOWAIT - The caller wants us to wait for all data I/O to complete
* before we return (including direct I/O). Forms the drain
* side of the write barrier needed to safely quiesce the
* filesystem.
*
*/
int
xfs_sync(
xfs_mount_t *mp,
int flags)
{
int error;
/*
* Get the Quota Manager to flush the dquots.
*
* If XFS quota support is not enabled or this filesystem
* instance does not use quotas XFS_QM_DQSYNC will always
* return zero.
*/
error = XFS_QM_DQSYNC(mp, flags);
if (error) {
/*
* If we got an IO error, we will be shutting down.
* So, there's nothing more for us to do here.
*/
ASSERT(error != EIO || XFS_FORCED_SHUTDOWN(mp));
if (XFS_FORCED_SHUTDOWN(mp))
return XFS_ERROR(error);
}
if (flags & SYNC_IOWAIT)
xfs_filestream_flush(mp);
return xfs_syncsub(mp, flags, NULL);
}
/*
* xfs sync routine for internal use
*
* This routine supports all of the flags defined for the generic vfs_sync
* interface as explained above under xfs_sync.
*
*/
int
xfs_sync_inodes(
xfs_mount_t *mp,
int flags,
int *bypassed)
{
xfs_inode_t *ip = NULL;
struct inode *vp = NULL;
int error;
int last_error;
uint64_t fflag;
uint lock_flags;
uint base_lock_flags;
boolean_t mount_locked;
boolean_t vnode_refed;
int preempt;
xfs_iptr_t *ipointer;
#ifdef DEBUG
boolean_t ipointer_in = B_FALSE;
#define IPOINTER_SET ipointer_in = B_TRUE
#define IPOINTER_CLR ipointer_in = B_FALSE
#else
#define IPOINTER_SET
#define IPOINTER_CLR
#endif
/* Insert a marker record into the inode list after inode ip. The list
* must be locked when this is called. After the call the list will no
* longer be locked.
*/
#define IPOINTER_INSERT(ip, mp) { \
ASSERT(ipointer_in == B_FALSE); \
ipointer->ip_mnext = ip->i_mnext; \
ipointer->ip_mprev = ip; \
ip->i_mnext = (xfs_inode_t *)ipointer; \
ipointer->ip_mnext->i_mprev = (xfs_inode_t *)ipointer; \
preempt = 0; \
XFS_MOUNT_IUNLOCK(mp); \
mount_locked = B_FALSE; \
IPOINTER_SET; \
}
/* Remove the marker from the inode list. If the marker was the only item
* in the list then there are no remaining inodes and we should zero out
* the whole list. If we are the current head of the list then move the head
* past us.
*/
#define IPOINTER_REMOVE(ip, mp) { \
ASSERT(ipointer_in == B_TRUE); \
if (ipointer->ip_mnext != (xfs_inode_t *)ipointer) { \
ip = ipointer->ip_mnext; \
ip->i_mprev = ipointer->ip_mprev; \
ipointer->ip_mprev->i_mnext = ip; \
if (mp->m_inodes == (xfs_inode_t *)ipointer) { \
mp->m_inodes = ip; \
} \
} else { \
ASSERT(mp->m_inodes == (xfs_inode_t *)ipointer); \
mp->m_inodes = NULL; \
ip = NULL; \
} \
IPOINTER_CLR; \
}
#define XFS_PREEMPT_MASK 0x7f
ASSERT(!(flags & SYNC_BDFLUSH));
if (bypassed)
*bypassed = 0;
if (mp->m_flags & XFS_MOUNT_RDONLY)
return 0;
error = 0;
last_error = 0;
preempt = 0;
/* Allocate a reference marker */
ipointer = (xfs_iptr_t *)kmem_zalloc(sizeof(xfs_iptr_t), KM_SLEEP);
fflag = XFS_B_ASYNC; /* default is don't wait */
if (flags & SYNC_DELWRI)
fflag = XFS_B_DELWRI;
if (flags & SYNC_WAIT)
fflag = 0; /* synchronous overrides all */
base_lock_flags = XFS_ILOCK_SHARED;
if (flags & (SYNC_DELWRI | SYNC_CLOSE)) {
/*
* We need the I/O lock if we're going to call any of
* the flush/inval routines.
*/
base_lock_flags |= XFS_IOLOCK_SHARED;
}
XFS_MOUNT_ILOCK(mp);
ip = mp->m_inodes;
mount_locked = B_TRUE;
vnode_refed = B_FALSE;
IPOINTER_CLR;
do {
ASSERT(ipointer_in == B_FALSE);
ASSERT(vnode_refed == B_FALSE);
lock_flags = base_lock_flags;
/*
* There were no inodes in the list, just break out
* of the loop.
*/
if (ip == NULL) {
break;
}
/*
* We found another sync thread marker - skip it
*/
if (ip->i_mount == NULL) {
ip = ip->i_mnext;
continue;
}
vp = VFS_I(ip);
/*
* If the vnode is gone then this is being torn down,
* call reclaim if it is flushed, else let regular flush
* code deal with it later in the loop.
*/
if (vp == NULL) {
/* Skip ones already in reclaim */
if (ip->i_flags & XFS_IRECLAIM) {
ip = ip->i_mnext;
continue;
}
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0) {
ip = ip->i_mnext;
} else if ((xfs_ipincount(ip) == 0) &&
xfs_iflock_nowait(ip)) {
IPOINTER_INSERT(ip, mp);
xfs_finish_reclaim(ip, 1,
XFS_IFLUSH_DELWRI_ELSE_ASYNC);
XFS_MOUNT_ILOCK(mp);
mount_locked = B_TRUE;
IPOINTER_REMOVE(ip, mp);
} else {
xfs_iunlock(ip, XFS_ILOCK_EXCL);
ip = ip->i_mnext;
}
continue;
}
if (VN_BAD(vp)) {
ip = ip->i_mnext;
continue;
}
if (XFS_FORCED_SHUTDOWN(mp) && !(flags & SYNC_CLOSE)) {
XFS_MOUNT_IUNLOCK(mp);
kmem_free(ipointer);
return 0;
}
/*
* Try to lock without sleeping. We're out of order with
* the inode list lock here, so if we fail we need to drop
* the mount lock and try again. If we're called from
* bdflush() here, then don't bother.
*
* The inode lock here actually coordinates with the
* almost spurious inode lock in xfs_ireclaim() to prevent
* the vnode we handle here without a reference from
* being freed while we reference it. If we lock the inode
* while it's on the mount list here, then the spurious inode
* lock in xfs_ireclaim() after the inode is pulled from
* the mount list will sleep until we release it here.
* This keeps the vnode from being freed while we reference
* it.
*/
if (xfs_ilock_nowait(ip, lock_flags) == 0) {
if (vp == NULL) {
ip = ip->i_mnext;
continue;
}
vp = vn_grab(vp);
if (vp == NULL) {
ip = ip->i_mnext;
continue;
}
IPOINTER_INSERT(ip, mp);
xfs_ilock(ip, lock_flags);
ASSERT(vp == VFS_I(ip));
ASSERT(ip->i_mount == mp);
vnode_refed = B_TRUE;
}
/* From here on in the loop we may have a marker record
* in the inode list.
*/
/*
* If we have to flush data or wait for I/O completion
* we need to drop the ilock that we currently hold.
* If we need to drop the lock, insert a marker if we
* have not already done so.
*/
if ((flags & (SYNC_CLOSE|SYNC_IOWAIT)) ||
((flags & SYNC_DELWRI) && VN_DIRTY(vp))) {
if (mount_locked) {
IPOINTER_INSERT(ip, mp);
}
xfs_iunlock(ip, XFS_ILOCK_SHARED);
if (flags & SYNC_CLOSE) {
/* Shutdown case. Flush and invalidate. */
if (XFS_FORCED_SHUTDOWN(mp))
xfs_tosspages(ip, 0, -1,
FI_REMAPF);
else
error = xfs_flushinval_pages(ip,
0, -1, FI_REMAPF);
} else if ((flags & SYNC_DELWRI) && VN_DIRTY(vp)) {
error = xfs_flush_pages(ip, 0,
-1, fflag, FI_NONE);
}
/*
* When freezing, we need to wait ensure all I/O (including direct
* I/O) is complete to ensure no further data modification can take
* place after this point
*/
if (flags & SYNC_IOWAIT)
vn_iowait(ip);
xfs_ilock(ip, XFS_ILOCK_SHARED);
}
if ((flags & SYNC_ATTR) &&
(ip->i_update_core ||
(ip->i_itemp && ip->i_itemp->ili_format.ilf_fields))) {
if (mount_locked)
IPOINTER_INSERT(ip, mp);
if (flags & SYNC_WAIT) {
xfs_iflock(ip);
error = xfs_iflush(ip, XFS_IFLUSH_SYNC);
/*
* If we can't acquire the flush lock, then the inode
* is already being flushed so don't bother waiting.
*
* If we can lock it then do a delwri flush so we can
* combine multiple inode flushes in each disk write.
*/
} else if (xfs_iflock_nowait(ip)) {
error = xfs_iflush(ip, XFS_IFLUSH_DELWRI);
} else if (bypassed) {
(*bypassed)++;
}
}
if (lock_flags != 0) {
xfs_iunlock(ip, lock_flags);
}
if (vnode_refed) {
/*
* If we had to take a reference on the vnode
* above, then wait until after we've unlocked
* the inode to release the reference. This is
* because we can be already holding the inode
* lock when IRELE() calls xfs_inactive().
*
* Make sure to drop the mount lock before calling
* IRELE() so that we don't trip over ourselves if
* we have to go for the mount lock again in the
* inactive code.
*/
if (mount_locked) {
IPOINTER_INSERT(ip, mp);
}
IRELE(ip);
vnode_refed = B_FALSE;
}
if (error) {
last_error = error;
}
/*
* bail out if the filesystem is corrupted.
*/
if (error == EFSCORRUPTED) {
if (!mount_locked) {
XFS_MOUNT_ILOCK(mp);
IPOINTER_REMOVE(ip, mp);
}
XFS_MOUNT_IUNLOCK(mp);
ASSERT(ipointer_in == B_FALSE);
kmem_free(ipointer);
return XFS_ERROR(error);
}
/* Let other threads have a chance at the mount lock
* if we have looped many times without dropping the
* lock.
*/
if ((++preempt & XFS_PREEMPT_MASK) == 0) {
if (mount_locked) {
IPOINTER_INSERT(ip, mp);
}
}
if (mount_locked == B_FALSE) {
XFS_MOUNT_ILOCK(mp);
mount_locked = B_TRUE;
IPOINTER_REMOVE(ip, mp);
continue;
}
ASSERT(ipointer_in == B_FALSE);
ip = ip->i_mnext;
} while (ip != mp->m_inodes);
XFS_MOUNT_IUNLOCK(mp);
ASSERT(ipointer_in == B_FALSE);
kmem_free(ipointer);
return XFS_ERROR(last_error);
}
/*
* xfs sync routine for internal use
*
* This routine supports all of the flags defined for the generic vfs_sync
* interface as explained above under xfs_sync.
*
*/
int
xfs_syncsub(
xfs_mount_t *mp,
int flags,
int *bypassed)
{
int error = 0;
int last_error = 0;
uint log_flags = XFS_LOG_FORCE;
xfs_buf_t *bp;
xfs_buf_log_item_t *bip;
/*
* Sync out the log. This ensures that the log is periodically
* flushed even if there is not enough activity to fill it up.
*/
if (flags & SYNC_WAIT)
log_flags |= XFS_LOG_SYNC;
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
if (flags & (SYNC_ATTR|SYNC_DELWRI)) {
if (flags & SYNC_BDFLUSH)
xfs_finish_reclaim_all(mp, 1);
else
error = xfs_sync_inodes(mp, flags, bypassed);
}
/*
* Flushing out dirty data above probably generated more
* log activity, so if this isn't vfs_sync() then flush
* the log again.
*/
if (flags & SYNC_DELWRI) {
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
}
if (flags & SYNC_FSDATA) {
/*
* If this is vfs_sync() then only sync the superblock
* if we can lock it without sleeping and it is not pinned.
*/
if (flags & SYNC_BDFLUSH) {
bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
if (bp != NULL) {
bip = XFS_BUF_FSPRIVATE(bp,xfs_buf_log_item_t*);
if ((bip != NULL) &&
xfs_buf_item_dirty(bip)) {
if (!(XFS_BUF_ISPINNED(bp))) {
XFS_BUF_ASYNC(bp);
error = xfs_bwrite(mp, bp);
} else {
xfs_buf_relse(bp);
}
} else {
xfs_buf_relse(bp);
}
}
} else {
bp = xfs_getsb(mp, 0);
/*
* If the buffer is pinned then push on the log so
* we won't get stuck waiting in the write for
* someone, maybe ourselves, to flush the log.
* Even though we just pushed the log above, we
* did not have the superblock buffer locked at
* that point so it can become pinned in between
* there and here.
*/
if (XFS_BUF_ISPINNED(bp))
xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
if (flags & SYNC_WAIT)
XFS_BUF_UNASYNC(bp);
else
XFS_BUF_ASYNC(bp);
error = xfs_bwrite(mp, bp);
}
if (error) {
last_error = error;
}
}
/*
* Now check to see if the log needs a "dummy" transaction.
*/
if (!(flags & SYNC_REMOUNT) && xfs_log_need_covered(mp)) {
xfs_trans_t *tp;
xfs_inode_t *ip;
/*
* Put a dummy transaction in the log to tell
* recovery that all others are OK.
*/
tp = xfs_trans_alloc(mp, XFS_TRANS_DUMMY1);
if ((error = xfs_trans_reserve(tp, 0,
XFS_ICHANGE_LOG_RES(mp),
0, 0, 0))) {
xfs_trans_cancel(tp, 0);
return error;
}
ip = mp->m_rootip;
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_ihold(tp, ip);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
error = xfs_trans_commit(tp, 0);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_log_force(mp, (xfs_lsn_t)0, log_flags);
}
/*
* When shutting down, we need to insure that the AIL is pushed
* to disk or the filesystem can appear corrupt from the PROM.
*/
if ((flags & (SYNC_CLOSE|SYNC_WAIT)) == (SYNC_CLOSE|SYNC_WAIT)) {
XFS_bflush(mp->m_ddev_targp);
if (mp->m_rtdev_targp) {
XFS_bflush(mp->m_rtdev_targp);
}
}
return XFS_ERROR(last_error);
}

2
fs/xfs/xfs_vfsops.h
Просмотреть файл

@ -8,9 +8,7 @@ struct kstatfs;
struct xfs_mount;
struct xfs_mount_args;
int xfs_sync(struct xfs_mount *mp, int flags);
void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
int lnnum);
void xfs_attr_quiesce(struct xfs_mount *mp);
#endif /* _XFS_VFSOPS_H */

141
fs/xfs/xfs_vnodeops.c
Просмотреть файл

@ -79,8 +79,7 @@ int
xfs_setattr(
struct xfs_inode *ip,
struct iattr *iattr,
int flags,
cred_t *credp)
int flags)
{
xfs_mount_t *mp = ip->i_mount;
struct inode *inode = VFS_I(ip);
@ -233,10 +232,6 @@ xfs_setattr(
/*
* Change file ownership. Must be the owner or privileged.
* If the system was configured with the "restricted_chown"
* option, the owner is not permitted to give away the file,
* and can change the group id only to a group of which he
* or she is a member.
*/
if (mask & (ATTR_UID|ATTR_GID)) {
/*
@ -260,9 +255,8 @@ xfs_setattr(
* shall be equal to either the group ID or one of the
* supplementary group IDs of the calling process.
*/
if (restricted_chown &&
(iuid != uid || (igid != gid &&
!in_group_p((gid_t)gid))) &&
if ((iuid != uid ||
(igid != gid && !in_group_p((gid_t)gid))) &&
!capable(CAP_CHOWN)) {
code = XFS_ERROR(EPERM);
goto error_return;
@ -456,10 +450,6 @@ xfs_setattr(
/*
* Change file ownership. Must be the owner or privileged.
* If the system was configured with the "restricted_chown"
* option, the owner is not permitted to give away the file,
* and can change the group id only to a group of which he
* or she is a member.
*/
if (mask & (ATTR_UID|ATTR_GID)) {
/*
@ -2009,7 +1999,7 @@ xfs_remove(
goto out_bmap_cancel;
/*
* Drop the link from dp to ip.
* Drop the "." link from ip to self.
*/
error = xfs_droplink(tp, ip);
if (error)
@ -2024,7 +2014,7 @@ xfs_remove(
}
/*
* Drop the "." link from ip to self.
* Drop the link from dp to ip.
*/
error = xfs_droplink(tp, ip);
if (error)
@ -2833,122 +2823,10 @@ xfs_reclaim(
if (!ip->i_update_core && (ip->i_itemp == NULL)) {
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_iflock(ip);
return xfs_finish_reclaim(ip, 1, XFS_IFLUSH_DELWRI_ELSE_SYNC);
} else {
xfs_mount_t *mp = ip->i_mount;
/* Protect sync and unpin from us */
XFS_MOUNT_ILOCK(mp);
spin_lock(&ip->i_flags_lock);
__xfs_iflags_set(ip, XFS_IRECLAIMABLE);
VFS_I(ip)->i_private = NULL;
ip->i_vnode = NULL;
spin_unlock(&ip->i_flags_lock);
list_add_tail(&ip->i_reclaim, &mp->m_del_inodes);
XFS_MOUNT_IUNLOCK(mp);
xfs_iflags_set(ip, XFS_IRECLAIMABLE);
return xfs_reclaim_inode(ip, 1, XFS_IFLUSH_DELWRI_ELSE_SYNC);
}
return 0;
}
int
xfs_finish_reclaim(
xfs_inode_t *ip,
int locked,
int sync_mode)
{
xfs_perag_t *pag = xfs_get_perag(ip->i_mount, ip->i_ino);
struct inode *vp = VFS_I(ip);
if (vp && VN_BAD(vp))
goto reclaim;
/* The hash lock here protects a thread in xfs_iget_core from
* racing with us on linking the inode back with a vnode.
* Once we have the XFS_IRECLAIM flag set it will not touch
* us.
*/
write_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
if (__xfs_iflags_test(ip, XFS_IRECLAIM) ||
(!__xfs_iflags_test(ip, XFS_IRECLAIMABLE) && vp == NULL)) {
spin_unlock(&ip->i_flags_lock);
write_unlock(&pag->pag_ici_lock);
if (locked) {
xfs_ifunlock(ip);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
}
return 1;
}
__xfs_iflags_set(ip, XFS_IRECLAIM);
spin_unlock(&ip->i_flags_lock);
write_unlock(&pag->pag_ici_lock);
xfs_put_perag(ip->i_mount, pag);
/*
* If the inode is still dirty, then flush it out. If the inode
* is not in the AIL, then it will be OK to flush it delwri as
* long as xfs_iflush() does not keep any references to the inode.
* We leave that decision up to xfs_iflush() since it has the
* knowledge of whether it's OK to simply do a delwri flush of
* the inode or whether we need to wait until the inode is
* pulled from the AIL.
* We get the flush lock regardless, though, just to make sure
* we don't free it while it is being flushed.
*/
if (!locked) {
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_iflock(ip);
}
/*
* In the case of a forced shutdown we rely on xfs_iflush() to
* wait for the inode to be unpinned before returning an error.
*/
if (xfs_iflush(ip, sync_mode) == 0) {
/* synchronize with xfs_iflush_done */
xfs_iflock(ip);
xfs_ifunlock(ip);
}
xfs_iunlock(ip, XFS_ILOCK_EXCL);
reclaim:
xfs_ireclaim(ip);
return 0;
}
int
xfs_finish_reclaim_all(xfs_mount_t *mp, int noblock)
{
int purged;
xfs_inode_t *ip, *n;
int done = 0;
while (!done) {
purged = 0;
XFS_MOUNT_ILOCK(mp);
list_for_each_entry_safe(ip, n, &mp->m_del_inodes, i_reclaim) {
if (noblock) {
if (xfs_ilock_nowait(ip, XFS_ILOCK_EXCL) == 0)
continue;
if (xfs_ipincount(ip) ||
!xfs_iflock_nowait(ip)) {
xfs_iunlock(ip, XFS_ILOCK_EXCL);
continue;
}
}
XFS_MOUNT_IUNLOCK(mp);
if (xfs_finish_reclaim(ip, noblock,
XFS_IFLUSH_DELWRI_ELSE_ASYNC))
delay(1);
purged = 1;
break;
}
done = !purged;
}
XFS_MOUNT_IUNLOCK(mp);
xfs_inode_set_reclaim_tag(ip);
return 0;
}
@ -3474,7 +3352,6 @@ xfs_change_file_space(
int cmd,
xfs_flock64_t *bf,
xfs_off_t offset,
cred_t *credp,
int attr_flags)
{
xfs_mount_t *mp = ip->i_mount;
@ -3562,7 +3439,7 @@ xfs_change_file_space(
iattr.ia_valid = ATTR_SIZE;
iattr.ia_size = startoffset;
error = xfs_setattr(ip, &iattr, attr_flags, credp);
error = xfs_setattr(ip, &iattr, attr_flags);
if (error)
return error;

6
fs/xfs/xfs_vnodeops.h
Просмотреть файл

@ -15,8 +15,7 @@ struct xfs_iomap;
int xfs_open(struct xfs_inode *ip);
int xfs_setattr(struct xfs_inode *ip, struct iattr *vap, int flags,
struct cred *credp);
int xfs_setattr(struct xfs_inode *ip, struct iattr *vap, int flags);
#define XFS_ATTR_DMI 0x01 /* invocation from a DMI function */
#define XFS_ATTR_NONBLOCK 0x02 /* return EAGAIN if operation would block */
#define XFS_ATTR_NOLOCK 0x04 /* Don't grab any conflicting locks */
@ -44,8 +43,7 @@ int xfs_inode_flush(struct xfs_inode *ip, int flags);
int xfs_set_dmattrs(struct xfs_inode *ip, u_int evmask, u_int16_t state);
int xfs_reclaim(struct xfs_inode *ip);
int xfs_change_file_space(struct xfs_inode *ip, int cmd,
xfs_flock64_t *bf, xfs_off_t offset,
struct cred *credp, int attr_flags);
xfs_flock64_t *bf, xfs_off_t offset, int attr_flags);
int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name,
struct xfs_inode *src_ip, struct xfs_inode *target_dp,
struct xfs_name *target_name, struct xfs_inode *target_ip);

2
include/linux/fs.h
Просмотреть файл

@ -1874,7 +1874,9 @@ extern loff_t default_llseek(struct file *file, loff_t offset, int origin);
extern loff_t vfs_llseek(struct file *file, loff_t offset, int origin);
extern struct inode * inode_init_always(struct super_block *, struct inode *);
extern void inode_init_once(struct inode *);
extern void inode_add_to_lists(struct super_block *, struct inode *);
extern void iput(struct inode *);
extern struct inode * igrab(struct inode *);
extern ino_t iunique(struct super_block *, ino_t);

1
kernel/sysctl_check.c
Просмотреть файл

@ -730,7 +730,6 @@ static const struct trans_ctl_table trans_fs_quota_table[] = {
};
static const struct trans_ctl_table trans_fs_xfs_table[] = {
{ XFS_RESTRICT_CHOWN, "restrict_chown" },
{ XFS_SGID_INHERIT, "irix_sgid_inherit" },
{ XFS_SYMLINK_MODE, "irix_symlink_mode" },
{ XFS_PANIC_MASK, "panic_mask" },