Jan Kara 08142579b6 mm: fix assertion mapping->nrpages == 0 in end_writeback() ... Under heavy memory and filesystem load, users observe the assertion mapping->nrpages == 0 in end_writeback() trigger. This can be caused by page reclaim reclaiming the last page from a mapping in the following race: CPU0 CPU1 ... shrink_page_list() __remove_mapping() __delete_from_page_cache() radix_tree_delete() evict_inode() truncate_inode_pages() truncate_inode_pages_range() pagevec_lookup() - finds nothing end_writeback() mapping->nrpages != 0 -> BUG page->mapping = NULL mapping->nrpages-- Fix the problem by doing a reliable check of mapping->nrpages under mapping->tree_lock in end_writeback(). Analyzed by Jay <jinshan.xiong@whamcloud.com>, lost in LKML, and dug out by Miklos Szeredi <mszeredi@suse.de>. Cc: Jay <jinshan.xiong@whamcloud.com> Cc: Miklos Szeredi <mszeredi@suse.de> Signed-off-by: Jan Kara <jack@suse.cz> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2011-06-27 18:00:13 -07:00
..
9p	9p: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:53 -04:00
adfs	Fix common misspellings	2011-03-31 11:26:23 -03:00
affs	affs: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:53 -04:00
afs	AFS: Use i_generation not i_version for the vnode uniquifier	2011-06-16 11:44:48 -04:00
autofs4	autofs4: bogus dentry_unhash() added in ->unlink()	2011-05-30 01:50:53 -04:00
befs	Fix common misspellings	2011-03-31 11:26:23 -03:00
bfs	bfs: remove unnecessary dentry_unhash on dir rename	2011-05-28 01:02:50 -04:00
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable	2011-06-27 13:32:14 -07:00
cachefiles	Fix common misspellings	2011-03-31 11:26:23 -03:00
ceph	ceph: unwind canceled flock state	2011-06-07 21:36:45 -07:00
cifs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6	2011-06-26 19:40:31 -07:00
coda	coda_ioctl_permission() is safe in RCU mode	2011-06-20 10:44:19 -04:00
configfs	configfs: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:54 -04:00
cramfs	cramfs: generate unique inode number for better inode cache usage	2011-01-13 08:03:23 -08:00
debugfs	debugfs: move to new strtobool	2011-05-19 16:55:28 +09:30
devpts	fs/devpts/inode.c: correctly check d_alloc_name() return code in devpts_pty_new()	2011-03-22 17:44:17 -07:00
dlm	Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6	2011-05-26 13:19:00 -07:00
ecryptfs	eCryptfs: Remove ecryptfs_header_cache_2	2011-05-29 14:24:25 -05:00
efs	block: remove per-queue plugging	2011-03-10 08:52:07 +01:00
exofs	exofs: remove unnecessary dentry_unhash on rmdir/rename_dir	2011-05-26 07:26:57 -04:00
exportfs	vfs: Add open by file handle support	2011-03-15 02:21:44 -04:00
ext2	ext2: remove unnecessary dentry_unhash on rmdir/rename_dir	2011-05-26 07:26:56 -04:00
ext3	fs: pass exact type of data dirties to ->dirty_inode	2011-05-27 07:04:40 -04:00
ext4	ext4: fixed tracepoints cleanup	2011-06-06 09:51:52 -04:00
fat	fat: Fix corrupt inode flags when remove ATTR_SYS flag	2011-05-31 19:42:24 +09:00
freevxfs	treewide: fix a few typos in comments	2011-05-10 10:16:21 +02:00
fscache	fscache: remove dead code under CONFIG_WORKQUEUE_DEBUGFS	2011-05-25 08:39:44 -07:00
fuse	more conservative S_NOSEC handling	2011-06-03 18:24:58 -04:00
gfs2	Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-fixes	2011-06-07 18:44:10 -07:00
hfs	hfs: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:52 -04:00
hfsplus	hfsplus: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:52 -04:00
hostfs	hostfs: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:52 -04:00
hpfs	hpfs: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:54 -04:00
hppfs	fs: icache RCU free inodes	2011-01-07 17:50:26 +11:00
hugetlbfs	mm: don't access vm_flags as 'int'	2011-05-26 09:20:31 -07:00
isofs	isofs: fix bh leak in isofs_fill_super() error case	2011-06-18 07:25:42 -07:00
jbd	jbd: Fix comment to match the code in journal_start()	2011-05-24 00:27:53 +02:00
jbd2	jbd2: Fix oops in jbd2_journal_remove_journal_head()	2011-06-13 15:38:22 -04:00
jffs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2011-05-28 13:03:41 -07:00
jfs	jfs: agstart field must be 64 bits	2011-06-20 17:53:24 -05:00
lockd	NLM: Don't hang forever on NLM unlock requests	2011-06-15 11:24:27 -04:00
logfs	logfs doesn't need ->permission() at all	2011-06-20 10:44:26 -04:00
minix	minix: remove unnecessary dentry_unhash on rmdir, dir rename	2011-05-28 01:02:54 -04:00
ncpfs	ncpfs: fix rename over directory with dangling references	2011-05-28 01:02:53 -04:00
nfs	NFS: Fix decode_secinfo_maxsz	2011-06-21 11:54:07 -04:00
nfs_common	Fix common misspellings	2011-03-31 11:26:23 -03:00
nfsd	nfsd4: fix break_lease flags on nfsd open	2011-06-20 10:38:01 -04:00
nilfs2	nilfs2_permission() doesn't need to bail out in RCU mode	2011-06-20 10:44:33 -04:00
nls	…
notify	Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6	2011-04-07 11:14:49 -07:00
ntfs	Fix common misspellings	2011-03-31 11:26:23 -03:00
ocfs2	more conservative S_NOSEC handling	2011-06-03 18:24:58 -04:00
omfs	Remove unneeded version.h includes from fs/	2011-06-24 08:34:22 -07:00
openpromfs	fs: icache RCU free inodes	2011-01-07 17:50:26 +11:00
partitions	Revert "block: Remove extra discard_alignment from hd_struct."	2011-05-30 07:42:51 +02:00
proc	proc_sys_permission() is OK in RCU mode	2011-06-20 10:45:25 -04:00
pstore	pstore: fix pstore filesystem mount/remount issue	2011-05-16 11:05:00 -07:00
qnx4	block: remove per-queue plugging	2011-03-10 08:52:07 +01:00
quota	vmscan: change shrinker API by passing shrink_control struct	2011-05-25 08:39:26 -07:00
ramfs	ramfs: fix memleak on no-mmu arch	2011-04-14 16:06:56 -07:00
reiserfs	reiserfs_permission() doesn't need to bail out in RCU mode	2011-06-20 10:45:21 -04:00
romfs	romfs: fix romfs_get_unmapped_area() argument check	2011-06-27 18:00:12 -07:00
squashfs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pkl/squashfs-linus	2011-05-29 11:19:45 -07:00
sysfs	Delay struct net freeing while there's a sysfs instance refering to it	2011-06-12 17:45:41 -04:00
sysv	sysv: remove unnecessary dentry_unhash from rmdir, dir rename	2011-05-28 01:02:50 -04:00
ubifs	ubifs: dereferencing an ERR_PTR in ubifs_mount()	2011-06-20 10:42:34 -04:00
udf	udf: remove unnecessary dentry_unhash from rmdir, dir rename	2011-05-28 01:02:52 -04:00
ufs	ufs: remove unnecessary dentry_unhash from rmdir, dir rename	2011-05-28 01:02:51 -04:00
xfs	xfs: prevent bogus assert when trying to remove non-existent attribute	2011-06-23 22:13:51 -05:00
Kconfig	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2011-05-26 09:52:14 -07:00
Kconfig.binfmt	…
Makefile	Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6	2011-03-16 19:01:29 -07:00
aio.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	2011-03-24 10:16:26 -07:00
anon_inodes.c	sanitize vfsmount refcounting changes	2011-01-16 13:47:07 -05:00
attr.c	Cache xattr security drop check for write v2	2011-05-28 12:02:09 -04:00
bad_inode.c	bad_inode_permission() is safe from RCU mode	2011-06-20 10:44:00 -04:00
binfmt_aout.c	…
binfmt_elf.c	brk: COMPAT_BRK: fix detection of randomized brk	2011-04-14 16:06:55 -07:00
binfmt_elf_fdpic.c	…
binfmt_em86.c	…
binfmt_flat.c	CRED: Fix load_flat_shared_library() to initialise bprm correctly	2011-05-03 10:10:51 +10:00
binfmt_misc.c	convert get_sb_single() users	2010-10-29 04:16:28 -04:00
binfmt_script.c	…
binfmt_som.c	…
bio-integrity.c	block: Require subsystems to explicitly allocate bio_set integrity mempool	2011-03-17 11:11:05 +01:00
bio.c	block: improve the bio_add_page() and bio_add_pc_page() descriptions	2011-05-28 14:44:46 +02:00
block_dev.c	block: use the passed in @bdev when claiming if partno is zero	2011-06-13 12:45:48 +02:00
buffer.c	vfs: Fix data corruption after failed write in __block_write_begin()	2011-06-16 11:44:46 -04:00
char_dev.c	Merge branch 'for-2.6.38/core' of git://git.kernel.dk/linux-2.6-block	2011-01-13 10:45:01 -08:00
compat.c	exec: unify do_execve/compat_do_execve code	2011-04-09 15:53:56 +02:00
compat_binfmt_elf.c	…
compat_ioctl.c	Merge branch 'tty-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6	2011-01-07 14:39:20 -08:00
dcache.c	vmscan: change shrinker API by passing shrink_control struct	2011-05-25 08:39:26 -07:00
dcookies.c	oprofile, dcookies: Fix possible circular locking dependency	2011-05-31 16:33:35 +02:00
direct-io.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	2011-03-24 10:16:26 -07:00
drop_caches.c	vmscan: change shrinker API by passing shrink_control struct	2011-05-25 08:39:26 -07:00
eventfd.c	Docbook: add fs/eventfd.c and fix typos in it	2011-02-21 15:07:04 -08:00
eventpoll.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
exec.c	KEYS/DNS: Fix ____call_usermodehelper() to not lose the session keyring	2011-06-17 09:40:48 -07:00
fcntl.c	userns: rename is_owner_or_cap to inode_owner_or_capable	2011-03-23 19:47:13 -07:00
fhandle.c	fs/fhandle.c: add <linux/personality.h> for ia64	2011-04-14 16:06:56 -07:00
fifo.c	Filesystem: fifo: Fixed coding style issue.	2011-03-21 00:16:09 -04:00
file.c	vfs: avoid large kmalloc()s for the fdtable	2011-04-28 11:28:20 -07:00
file_table.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2011-03-16 13:26:17 -07:00
filesystems.c	fs: synchronize_rcu when unregister_filesystem success not failure	2011-04-17 10:42:01 -07:00
fs-writeback.c	fs: pass exact type of data dirties to ->dirty_inode	2011-05-27 07:04:40 -04:00
fs_struct.c	sanitize vfsmount refcounting changes	2011-01-16 13:47:07 -05:00
generic_acl.c	userns: rename is_owner_or_cap to inode_owner_or_capable	2011-03-23 19:47:13 -07:00
inode.c	mm: fix assertion mapping->nrpages == 0 in end_writeback()	2011-06-27 18:00:13 -07:00
internal.h	fs: move i_wb_list out from under inode_lock	2011-03-24 21:17:51 -04:00
ioctl.c	vfs: cleanup do_vfs_ioctl()	2011-03-21 00:16:08 -04:00
ioprio.c	ioprio: grab rcu_read_lock in sys_ioprio_{set,get}()	2010-11-15 10:23:31 +01:00
libfs.c	libfs: drop unneeded dentry_unhash	2011-05-26 07:26:50 -04:00
locks.c	Merge branch 'for-2.6.39' of git://linux-nfs.org/~bfields/linux	2011-03-24 08:20:39 -07:00
mbcache.c	vmscan: change shrinker API by passing shrink_control struct	2011-05-25 08:39:26 -07:00
mpage.c	mm/fs: add hooks to support cleancache	2011-05-26 10:01:43 -06:00
namei.c	fix comment in generic_permission()	2011-06-20 10:45:56 -04:00
namespace.c	fs/namespace.c: bound mount propagation fix	2011-05-26 07:26:44 -04:00
nfsctl.c	open-style analog of vfs_path_lookup()	2011-03-14 09:15:28 -04:00
no-block.c	…
open.c	fs: Use BUG_ON(!mnt) at dentry_open().	2011-03-21 01:10:41 -04:00
pipe.c	Fix broken "pipe: use event aware wakeups" optimization	2011-01-20 16:21:59 -08:00
pnode.c	fs: scale mntget/mntput	2011-01-07 17:50:33 +11:00
pnode.h	…
posix_acl.c	NFS: Prevent memory allocation failure in nfsacl_encode()	2011-01-25 15:24:47 -05:00
read_write.c	fix signedness mess in rw_verify_area() on 64bit architectures	2011-01-12 20:06:58 -05:00
read_write.h	…
readdir.c	…
select.c	select: remove unused MAX_SELECT_SECONDS	2011-03-21 00:16:08 -04:00
seq_file.c	…
signalfd.c	…
splice.c	splice: add wakeup_pipe_readers()	2011-05-23 19:58:53 +02:00
stack.c	…
stat.c	readlinkat(), fchownat() and fstatat() with empty relative pathnames	2011-03-15 02:21:45 -04:00
statfs.c	clean statfs-like syscalls up	2011-03-14 09:15:28 -04:00
super.c	more conservative S_NOSEC handling	2011-06-03 18:24:58 -04:00
sync.c	Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block	2011-03-24 10:16:26 -07:00
timerfd.c	timerfd: Fix wakeup of processes when timer is cancelled on clock change	2011-06-14 11:46:14 +02:00
utimes.c	userns: rename is_owner_or_cap to inode_owner_or_capable	2011-03-23 19:47:13 -07:00
xattr.c	Cache xattr security drop check for write v2	2011-05-28 12:02:09 -04:00
xattr_acl.c	…