2005-04-17 02:20:36 +04:00
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/*
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* JFFS2 -- Journalling Flash File System, Version 2.
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*
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2007-04-25 17:16:47 +04:00
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* Copyright © 2001-2007 Red Hat, Inc.
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2005-04-17 02:20:36 +04:00
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*
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* Created by David Woodhouse <dwmw2@infradead.org>
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*
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* For licensing information, see the file 'LICENCE' in this directory.
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*
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*/
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2012-02-16 03:56:45 +04:00
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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2005-04-17 02:20:36 +04:00
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/fs.h>
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2006-10-11 15:52:47 +04:00
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#include <linux/err.h>
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2005-04-17 02:20:36 +04:00
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#include <linux/mount.h>
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2019-03-25 19:38:32 +03:00
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#include <linux/fs_context.h>
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#include <linux/fs_parser.h>
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2005-04-17 02:20:36 +04:00
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#include <linux/jffs2.h>
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#include <linux/pagemap.h>
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2007-05-11 09:51:50 +04:00
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#include <linux/mtd/super.h>
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2005-04-17 02:20:36 +04:00
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#include <linux/ctype.h>
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#include <linux/namei.h>
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2011-10-17 05:15:16 +04:00
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#include <linux/seq_file.h>
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2008-07-31 23:39:25 +04:00
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#include <linux/exportfs.h>
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2005-04-17 02:20:36 +04:00
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#include "compr.h"
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#include "nodelist.h"
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static void jffs2_put_super(struct super_block *);
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2006-12-07 07:33:20 +03:00
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static struct kmem_cache *jffs2_inode_cachep;
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2005-04-17 02:20:36 +04:00
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static struct inode *jffs2_alloc_inode(struct super_block *sb)
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{
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2008-05-01 15:28:04 +04:00
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struct jffs2_inode_info *f;
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f = kmem_cache_alloc(jffs2_inode_cachep, GFP_KERNEL);
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if (!f)
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2005-04-17 02:20:36 +04:00
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return NULL;
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2008-05-01 15:28:04 +04:00
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return &f->vfs_inode;
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2005-04-17 02:20:36 +04:00
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}
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2019-04-16 03:15:58 +03:00
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static void jffs2_free_inode(struct inode *inode)
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2005-04-17 02:20:36 +04:00
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{
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2019-03-26 04:39:50 +03:00
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struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
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kfree(f->target);
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kmem_cache_free(jffs2_inode_cachep, f);
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2005-04-17 02:20:36 +04:00
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}
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2008-07-26 06:45:34 +04:00
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static void jffs2_i_init_once(void *foo)
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2005-04-17 02:20:36 +04:00
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{
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2008-05-01 15:28:04 +04:00
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struct jffs2_inode_info *f = foo;
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2005-04-17 02:20:36 +04:00
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2008-05-01 15:28:04 +04:00
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mutex_init(&f->sem);
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inode_init_once(&f->vfs_inode);
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2005-04-17 02:20:36 +04:00
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}
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2011-10-17 05:15:16 +04:00
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static const char *jffs2_compr_name(unsigned int compr)
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{
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switch (compr) {
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case JFFS2_COMPR_MODE_NONE:
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return "none";
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2011-10-17 05:15:23 +04:00
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#ifdef CONFIG_JFFS2_LZO
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case JFFS2_COMPR_MODE_FORCELZO:
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return "lzo";
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#endif
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#ifdef CONFIG_JFFS2_ZLIB
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case JFFS2_COMPR_MODE_FORCEZLIB:
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return "zlib";
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#endif
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2011-10-17 05:15:16 +04:00
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default:
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/* should never happen; programmer error */
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WARN_ON(1);
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return "";
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}
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}
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2011-12-09 06:32:45 +04:00
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static int jffs2_show_options(struct seq_file *s, struct dentry *root)
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2011-10-17 05:15:16 +04:00
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{
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2011-12-09 06:32:45 +04:00
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struct jffs2_sb_info *c = JFFS2_SB_INFO(root->d_sb);
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2011-10-17 05:15:16 +04:00
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struct jffs2_mount_opts *opts = &c->mount_opts;
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if (opts->override_compr)
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seq_printf(s, ",compr=%s", jffs2_compr_name(opts->compr));
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2012-04-11 01:22:35 +04:00
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if (opts->rp_size)
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seq_printf(s, ",rp_size=%u", opts->rp_size / 1024);
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2011-10-17 05:15:16 +04:00
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return 0;
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}
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2005-04-17 02:20:36 +04:00
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static int jffs2_sync_fs(struct super_block *sb, int wait)
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{
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struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
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2012-08-23 11:10:07 +04:00
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#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
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2018-10-19 11:30:20 +03:00
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if (jffs2_is_writebuffered(c))
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cancel_delayed_work_sync(&c->wbuf_dwork);
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2012-08-23 11:10:07 +04:00
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#endif
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2008-04-22 18:13:40 +04:00
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mutex_lock(&c->alloc_sem);
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2005-04-17 02:20:36 +04:00
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jffs2_flush_wbuf_pad(c);
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2008-04-22 18:13:40 +04:00
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mutex_unlock(&c->alloc_sem);
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2005-04-17 02:20:36 +04:00
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return 0;
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}
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2008-07-31 23:39:25 +04:00
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static struct inode *jffs2_nfs_get_inode(struct super_block *sb, uint64_t ino,
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uint32_t generation)
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{
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/* We don't care about i_generation. We'll destroy the flash
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before we start re-using inode numbers anyway. And even
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if that wasn't true, we'd have other problems...*/
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return jffs2_iget(sb, ino);
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}
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static struct dentry *jffs2_fh_to_dentry(struct super_block *sb, struct fid *fid,
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int fh_len, int fh_type)
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{
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return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
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jffs2_nfs_get_inode);
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}
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static struct dentry *jffs2_fh_to_parent(struct super_block *sb, struct fid *fid,
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int fh_len, int fh_type)
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{
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return generic_fh_to_parent(sb, fid, fh_len, fh_type,
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jffs2_nfs_get_inode);
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}
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static struct dentry *jffs2_get_parent(struct dentry *child)
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{
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struct jffs2_inode_info *f;
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uint32_t pino;
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VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
Convert the following where appropriate:
(1) S_ISLNK(dentry->d_inode) to d_is_symlink(dentry).
(2) S_ISREG(dentry->d_inode) to d_is_reg(dentry).
(3) S_ISDIR(dentry->d_inode) to d_is_dir(dentry). This is actually more
complicated than it appears as some calls should be converted to
d_can_lookup() instead. The difference is whether the directory in
question is a real dir with a ->lookup op or whether it's a fake dir with
a ->d_automount op.
In some circumstances, we can subsume checks for dentry->d_inode not being
NULL into this, provided we the code isn't in a filesystem that expects
d_inode to be NULL if the dirent really *is* negative (ie. if we're going to
use d_inode() rather than d_backing_inode() to get the inode pointer).
Note that the dentry type field may be set to something other than
DCACHE_MISS_TYPE when d_inode is NULL in the case of unionmount, where the VFS
manages the fall-through from a negative dentry to a lower layer. In such a
case, the dentry type of the negative union dentry is set to the same as the
type of the lower dentry.
However, if you know d_inode is not NULL at the call site, then you can use
the d_is_xxx() functions even in a filesystem.
There is one further complication: a 0,0 chardev dentry may be labelled
DCACHE_WHITEOUT_TYPE rather than DCACHE_SPECIAL_TYPE. Strictly, this was
intended for special directory entry types that don't have attached inodes.
The following perl+coccinelle script was used:
use strict;
my @callers;
open($fd, 'git grep -l \'S_IS[A-Z].*->d_inode\' |') ||
die "Can't grep for S_ISDIR and co. callers";
@callers = <$fd>;
close($fd);
unless (@callers) {
print "No matches\n";
exit(0);
}
my @cocci = (
'@@',
'expression E;',
'@@',
'',
'- S_ISLNK(E->d_inode->i_mode)',
'+ d_is_symlink(E)',
'',
'@@',
'expression E;',
'@@',
'',
'- S_ISDIR(E->d_inode->i_mode)',
'+ d_is_dir(E)',
'',
'@@',
'expression E;',
'@@',
'',
'- S_ISREG(E->d_inode->i_mode)',
'+ d_is_reg(E)' );
my $coccifile = "tmp.sp.cocci";
open($fd, ">$coccifile") || die $coccifile;
print($fd "$_\n") || die $coccifile foreach (@cocci);
close($fd);
foreach my $file (@callers) {
chomp $file;
print "Processing ", $file, "\n";
system("spatch", "--sp-file", $coccifile, $file, "--in-place", "--no-show-diff") == 0 ||
die "spatch failed";
}
[AV: overlayfs parts skipped]
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-01-29 15:02:35 +03:00
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BUG_ON(!d_is_dir(child));
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2008-07-31 23:39:25 +04:00
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2015-03-18 01:25:59 +03:00
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f = JFFS2_INODE_INFO(d_inode(child));
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2008-07-31 23:39:25 +04:00
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pino = f->inocache->pino_nlink;
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JFFS2_DEBUG("Parent of directory ino #%u is #%u\n",
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f->inocache->ino, pino);
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2016-04-10 08:33:30 +03:00
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return d_obtain_alias(jffs2_iget(child->d_sb, pino));
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2008-07-31 23:39:25 +04:00
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}
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2009-09-22 04:01:10 +04:00
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static const struct export_operations jffs2_export_ops = {
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2008-07-31 23:39:25 +04:00
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.get_parent = jffs2_get_parent,
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.fh_to_dentry = jffs2_fh_to_dentry,
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.fh_to_parent = jffs2_fh_to_parent,
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};
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2011-10-17 05:15:16 +04:00
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/*
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* JFFS2 mount options.
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*
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2019-03-25 19:38:32 +03:00
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* Opt_source: The source device
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2011-10-17 05:15:16 +04:00
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* Opt_override_compr: override default compressor
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2012-04-11 01:22:35 +04:00
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* Opt_rp_size: size of reserved pool in KiB
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2011-10-17 05:15:16 +04:00
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*/
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enum {
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Opt_override_compr,
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2012-04-11 01:22:35 +04:00
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Opt_rp_size,
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2011-10-17 05:15:16 +04:00
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};
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2019-09-07 05:12:08 +03:00
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static const struct fs_parameter_enum jffs2_param_compr[] = {
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{"none", JFFS2_COMPR_MODE_NONE },
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2011-10-17 05:15:23 +04:00
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#ifdef CONFIG_JFFS2_LZO
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2019-09-07 05:12:08 +03:00
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{"lzo", JFFS2_COMPR_MODE_FORCELZO },
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2011-10-17 05:15:23 +04:00
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#endif
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#ifdef CONFIG_JFFS2_ZLIB
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2019-09-07 05:12:08 +03:00
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{"zlib", JFFS2_COMPR_MODE_FORCEZLIB },
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2011-10-17 05:15:23 +04:00
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#endif
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2019-03-25 19:38:32 +03:00
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{}
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};
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2019-09-07 05:12:08 +03:00
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static const struct fs_parameter_spec jffs2_param_specs[] = {
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fsparam_enum ("compr", Opt_override_compr, jffs2_param_compr),
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fsparam_u32 ("rp_size", Opt_rp_size),
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{}
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};
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2019-03-25 19:38:32 +03:00
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const struct fs_parameter_description jffs2_fs_parameters = {
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.name = "jffs2",
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.specs = jffs2_param_specs,
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};
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static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
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{
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struct fs_parse_result result;
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struct jffs2_sb_info *c = fc->s_fs_info;
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int opt;
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opt = fs_parse(fc, &jffs2_fs_parameters, param, &result);
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if (opt < 0)
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return opt;
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switch (opt) {
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case Opt_override_compr:
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c->mount_opts.compr = result.uint_32;
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c->mount_opts.override_compr = true;
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break;
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case Opt_rp_size:
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if (result.uint_32 > UINT_MAX / 1024)
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return invalf(fc, "jffs2: rp_size unrepresentable");
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opt = result.uint_32 * 1024;
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if (opt > c->mtd->size)
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return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
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c->mtd->size / 1024);
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c->mount_opts.rp_size = opt;
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break;
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default:
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return -EINVAL;
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2011-10-17 05:15:16 +04:00
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}
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return 0;
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}
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2019-03-25 19:38:32 +03:00
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static int jffs2_reconfigure(struct fs_context *fc)
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2011-10-17 05:15:16 +04:00
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{
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2019-03-25 19:38:32 +03:00
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struct super_block *sb = fc->root->d_sb;
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2011-10-17 05:15:16 +04:00
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2014-03-13 18:14:33 +04:00
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sync_filesystem(sb);
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2019-03-25 19:38:32 +03:00
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return jffs2_do_remount_fs(sb, fc);
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2011-10-17 05:15:16 +04:00
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}
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2007-02-12 11:55:41 +03:00
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static const struct super_operations jffs2_super_operations =
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2005-04-17 02:20:36 +04:00
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{
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.alloc_inode = jffs2_alloc_inode,
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2019-04-16 03:15:58 +03:00
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.free_inode = jffs2_free_inode,
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2005-04-17 02:20:36 +04:00
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.put_super = jffs2_put_super,
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.statfs = jffs2_statfs,
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2010-06-07 22:34:48 +04:00
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.evict_inode = jffs2_evict_inode,
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2005-04-17 02:20:36 +04:00
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.dirty_inode = jffs2_dirty_inode,
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2011-10-17 05:15:16 +04:00
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.show_options = jffs2_show_options,
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2005-04-17 02:20:36 +04:00
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.sync_fs = jffs2_sync_fs,
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};
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2007-05-11 09:51:50 +04:00
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/*
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* fill in the superblock
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*/
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2019-03-25 19:38:32 +03:00
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static int jffs2_fill_super(struct super_block *sb, struct fs_context *fc)
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2005-04-17 02:20:36 +04:00
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{
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2019-03-25 19:38:32 +03:00
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struct jffs2_sb_info *c = sb->s_fs_info;
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2010-08-16 00:51:10 +04:00
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2012-02-16 03:56:43 +04:00
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jffs2_dbg(1, "jffs2_get_sb_mtd():"
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2007-05-11 09:51:50 +04:00
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" New superblock for device %d (\"%s\")\n",
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2012-02-16 03:56:43 +04:00
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sb->s_mtd->index, sb->s_mtd->name);
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2005-04-17 02:20:36 +04:00
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2007-05-11 09:51:50 +04:00
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|
c->mtd = sb->s_mtd;
|
|
|
|
c->os_priv = sb;
|
2011-10-17 05:15:16 +04:00
|
|
|
|
2007-05-11 09:51:50 +04:00
|
|
|
/* Initialize JFFS2 superblock locks, the further initialization will
|
|
|
|
* be done later */
|
2008-04-22 18:13:40 +04:00
|
|
|
mutex_init(&c->alloc_sem);
|
|
|
|
mutex_init(&c->erase_free_sem);
|
2005-07-12 20:37:12 +04:00
|
|
|
init_waitqueue_head(&c->erase_wait);
|
|
|
|
init_waitqueue_head(&c->inocache_wq);
|
|
|
|
spin_lock_init(&c->erase_completion_lock);
|
|
|
|
spin_lock_init(&c->inocache_lock);
|
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
sb->s_op = &jffs2_super_operations;
|
2008-07-31 23:39:25 +04:00
|
|
|
sb->s_export_op = &jffs2_export_ops;
|
2017-11-28 00:05:09 +03:00
|
|
|
sb->s_flags = sb->s_flags | SB_NOATIME;
|
2006-05-13 10:09:47 +04:00
|
|
|
sb->s_xattr = jffs2_xattr_handlers;
|
|
|
|
#ifdef CONFIG_JFFS2_FS_POSIX_ACL
|
2017-11-28 00:05:09 +03:00
|
|
|
sb->s_flags |= SB_POSIXACL;
|
2006-05-13 10:09:47 +04:00
|
|
|
#endif
|
2019-03-25 19:38:32 +03:00
|
|
|
return jffs2_do_fill_super(sb, fc);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int jffs2_get_tree(struct fs_context *fc)
|
|
|
|
{
|
|
|
|
return get_tree_mtd(fc, jffs2_fill_super);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void jffs2_free_fc(struct fs_context *fc)
|
|
|
|
{
|
|
|
|
kfree(fc->s_fs_info);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
2019-03-25 19:38:32 +03:00
|
|
|
static const struct fs_context_operations jffs2_context_ops = {
|
|
|
|
.free = jffs2_free_fc,
|
|
|
|
.parse_param = jffs2_parse_param,
|
|
|
|
.get_tree = jffs2_get_tree,
|
|
|
|
.reconfigure = jffs2_reconfigure,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int jffs2_init_fs_context(struct fs_context *fc)
|
2005-04-17 02:20:36 +04:00
|
|
|
{
|
2019-03-25 19:38:32 +03:00
|
|
|
struct jffs2_sb_info *ctx;
|
|
|
|
|
|
|
|
ctx = kzalloc(sizeof(struct jffs2_sb_info), GFP_KERNEL);
|
|
|
|
if (!ctx)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
fc->s_fs_info = ctx;
|
|
|
|
fc->ops = &jffs2_context_ops;
|
|
|
|
return 0;
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void jffs2_put_super (struct super_block *sb)
|
|
|
|
{
|
|
|
|
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
|
|
|
|
|
2012-02-16 03:56:43 +04:00
|
|
|
jffs2_dbg(2, "%s()\n", __func__);
|
2005-04-17 02:20:36 +04:00
|
|
|
|
2008-04-22 18:13:40 +04:00
|
|
|
mutex_lock(&c->alloc_sem);
|
2005-04-17 02:20:36 +04:00
|
|
|
jffs2_flush_wbuf_pad(c);
|
2008-04-22 18:13:40 +04:00
|
|
|
mutex_unlock(&c->alloc_sem);
|
2005-09-07 12:35:26 +04:00
|
|
|
|
|
|
|
jffs2_sum_exit(c);
|
|
|
|
|
2005-04-17 02:20:36 +04:00
|
|
|
jffs2_free_ino_caches(c);
|
|
|
|
jffs2_free_raw_node_refs(c);
|
2016-01-23 02:11:02 +03:00
|
|
|
kvfree(c->blocks);
|
2005-04-17 02:20:36 +04:00
|
|
|
jffs2_flash_cleanup(c);
|
|
|
|
kfree(c->inocache_list);
|
2006-05-13 10:09:47 +04:00
|
|
|
jffs2_clear_xattr_subsystem(c);
|
2011-12-30 18:35:35 +04:00
|
|
|
mtd_sync(c->mtd);
|
2012-02-16 03:56:43 +04:00
|
|
|
jffs2_dbg(1, "%s(): returning\n", __func__);
|
2005-04-17 02:20:36 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
static void jffs2_kill_sb(struct super_block *sb)
|
|
|
|
{
|
|
|
|
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
|
2018-04-03 06:56:44 +03:00
|
|
|
if (c && !sb_rdonly(sb))
|
2005-05-18 15:37:28 +04:00
|
|
|
jffs2_stop_garbage_collect_thread(c);
|
2007-05-11 09:51:50 +04:00
|
|
|
kill_mtd_super(sb);
|
2005-04-17 02:20:36 +04:00
|
|
|
kfree(c);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct file_system_type jffs2_fs_type = {
|
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.name = "jffs2",
|
2019-03-25 19:38:32 +03:00
|
|
|
.init_fs_context = jffs2_init_fs_context,
|
|
|
|
.parameters = &jffs2_fs_parameters,
|
2005-04-17 02:20:36 +04:00
|
|
|
.kill_sb = jffs2_kill_sb,
|
|
|
|
};
|
2013-03-03 07:39:14 +04:00
|
|
|
MODULE_ALIAS_FS("jffs2");
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
static int __init init_jffs2_fs(void)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
2006-05-15 03:49:43 +04:00
|
|
|
/* Paranoia checks for on-medium structures. If we ask GCC
|
|
|
|
to pack them with __attribute__((packed)) then it _also_
|
|
|
|
assumes that they're not aligned -- so it emits crappy
|
|
|
|
code on some architectures. Ideally we want an attribute
|
|
|
|
which means just 'no padding', without the alignment
|
|
|
|
thing. But GCC doesn't have that -- we have to just
|
|
|
|
hope the structs are the right sizes, instead. */
|
2006-10-11 12:22:05 +04:00
|
|
|
BUILD_BUG_ON(sizeof(struct jffs2_unknown_node) != 12);
|
|
|
|
BUILD_BUG_ON(sizeof(struct jffs2_raw_dirent) != 40);
|
|
|
|
BUILD_BUG_ON(sizeof(struct jffs2_raw_inode) != 68);
|
|
|
|
BUILD_BUG_ON(sizeof(struct jffs2_raw_summary) != 32);
|
2006-05-15 03:49:43 +04:00
|
|
|
|
2012-02-16 03:56:45 +04:00
|
|
|
pr_info("version 2.2."
|
2005-02-09 12:24:26 +03:00
|
|
|
#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
|
2005-04-17 02:20:36 +04:00
|
|
|
" (NAND)"
|
2005-09-07 12:35:26 +04:00
|
|
|
#endif
|
|
|
|
#ifdef CONFIG_JFFS2_SUMMARY
|
|
|
|
" (SUMMARY) "
|
2005-04-17 02:20:36 +04:00
|
|
|
#endif
|
2007-04-25 17:16:47 +04:00
|
|
|
" © 2001-2006 Red Hat, Inc.\n");
|
2005-04-17 02:20:36 +04:00
|
|
|
|
|
|
|
jffs2_inode_cachep = kmem_cache_create("jffs2_i",
|
|
|
|
sizeof(struct jffs2_inode_info),
|
2006-03-24 14:16:06 +03:00
|
|
|
0, (SLAB_RECLAIM_ACCOUNT|
|
2016-01-15 02:18:21 +03:00
|
|
|
SLAB_MEM_SPREAD|SLAB_ACCOUNT),
|
2007-07-20 05:11:58 +04:00
|
|
|
jffs2_i_init_once);
|
2005-04-17 02:20:36 +04:00
|
|
|
if (!jffs2_inode_cachep) {
|
2012-02-16 03:56:45 +04:00
|
|
|
pr_err("error: Failed to initialise inode cache\n");
|
2005-04-17 02:20:36 +04:00
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
ret = jffs2_compressors_init();
|
|
|
|
if (ret) {
|
2012-02-16 03:56:45 +04:00
|
|
|
pr_err("error: Failed to initialise compressors\n");
|
2005-04-17 02:20:36 +04:00
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
ret = jffs2_create_slab_caches();
|
|
|
|
if (ret) {
|
2012-02-16 03:56:45 +04:00
|
|
|
pr_err("error: Failed to initialise slab caches\n");
|
2005-04-17 02:20:36 +04:00
|
|
|
goto out_compressors;
|
|
|
|
}
|
|
|
|
ret = register_filesystem(&jffs2_fs_type);
|
|
|
|
if (ret) {
|
2012-02-16 03:56:45 +04:00
|
|
|
pr_err("error: Failed to register filesystem\n");
|
2005-04-17 02:20:36 +04:00
|
|
|
goto out_slab;
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
out_slab:
|
|
|
|
jffs2_destroy_slab_caches();
|
|
|
|
out_compressors:
|
|
|
|
jffs2_compressors_exit();
|
|
|
|
out:
|
|
|
|
kmem_cache_destroy(jffs2_inode_cachep);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit exit_jffs2_fs(void)
|
|
|
|
{
|
|
|
|
unregister_filesystem(&jffs2_fs_type);
|
|
|
|
jffs2_destroy_slab_caches();
|
|
|
|
jffs2_compressors_exit();
|
2012-09-26 05:33:07 +04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Make sure all delayed rcu free inodes are flushed before we
|
|
|
|
* destroy cache.
|
|
|
|
*/
|
|
|
|
rcu_barrier();
|
2005-04-17 02:20:36 +04:00
|
|
|
kmem_cache_destroy(jffs2_inode_cachep);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(init_jffs2_fs);
|
|
|
|
module_exit(exit_jffs2_fs);
|
|
|
|
|
|
|
|
MODULE_DESCRIPTION("The Journalling Flash File System, v2");
|
|
|
|
MODULE_AUTHOR("Red Hat, Inc.");
|
2005-11-07 14:16:07 +03:00
|
|
|
MODULE_LICENSE("GPL"); // Actually dual-licensed, but it doesn't matter for
|
2005-04-17 02:20:36 +04:00
|
|
|
// the sake of this tag. It's Free Software.
|