Chris Mason e3f24cc521 Btrfs: don't release pages when we can't clear the uptodate bits ... Btrfs tracks uptodate state in an rbtree as well as in the page bits. This is supposed to enable us to use block sizes other than the page size, but there are a few parts still missing before that completely works. But, our readpage routine trusts this additional range based tracking of uptodateness, much in the same way the buffer head up to date bits are trusted for the other filesystems. The problem is that sometimes we need to allocate memory in order to split records in the rbtree, even when we are just clearing bits. This can be difficult when our clearing function is called GFP_ATOMIC, which can happen in the releasepage path. So, what happens today looks like this: releasepage called with GFP_ATOMIC btrfs_releasepage calls clear_extent_bit clear_extent_bit fails to allocate ram, leaving the up to date bit set btrfs_releasepage returns success The end result is the page being gone, but btrfs thinking the range is up to date. Later on if someone tries to read that same page, the btrfs readpage code will return immediately thinking the page is already up to date. This commit fixes things to fail the releasepage when we can't clear the extent state bits. It covers both data pages and metadata tree blocks. Signed-off-by: Chris Mason <chris.mason@oracle.com>		2011-02-14 13:04:01 -05:00
..
9p	fs/9p: Don't use dotl version of mknod for dotu inode operations	2010-09-13 08:13:03 -05:00
adfs	check ATTR_SIZE contraints in inode_change_ok	2010-08-09 16:47:39 -04:00
affs	AFFS: wait for sb synchronization when needed	2010-08-09 16:48:51 -04:00
afs	Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6	2010-08-13 10:37:30 -07:00
autofs	autofs/autofs4: Move compat_ioctl handling into fs	2010-08-09 00:13:34 +02:00
autofs4	autofs4: remove unneeded null check in try_to_fill_dentry()	2010-08-11 08:59:06 -07:00
befs	fix typos concerning "initiali[zs]e"	2010-06-16 18:05:05 +02:00
bfs	BFS: clean up the superblock usage	2010-08-09 16:48:53 -04:00
btrfs	Btrfs: don't release pages when we can't clear the uptodate bits	2011-02-14 13:04:01 -05:00
cachefiles	Add a dummy printk function for the maintenance of unused printks	2010-08-12 09:51:35 -07:00
ceph	ceph: update issue_seq on cap grant	2010-10-07 08:01:50 -07:00
cifs	cifs: prevent infinite recursion in cifs_reconnect_tcon	2010-10-01 17:50:08 +00:00
coda	Coda: mount hangs because of missed REQ_WRITE rename	2010-09-19 11:03:09 -07:00
configfs	fix setattr error handling in sysfs, configfs	2010-06-04 17:16:29 -04:00
cramfs	cramfs: only unlock new inodes	2010-08-18 01:01:33 -04:00
debugfs	Add x64 support to debugfs	2010-05-19 22:41:57 -04:00
devpts	Simplify devpts_get_sb() failure exits	2010-05-21 18:31:12 -04:00
dlm	fs/dlm: Drop unnecessary null test	2010-08-05 14:23:45 -05:00
ecryptfs	eCryptfs: Fix encrypted file name lookup regression	2010-08-27 10:50:53 -05:00
efs
exofs	exofs: Fix double page_unlock BUG in write_begin/end	2010-10-08 11:26:54 -04:00
exportfs
ext2	mbcache: Remove unused features	2010-08-09 16:48:45 -04:00
ext3	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-08-10 11:26:52 -07:00
ext4	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-08-10 11:26:52 -07:00
fat	remove SWRITE* I/O types	2010-08-18 01:09:01 -04:00
freevxfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-08-10 11:26:52 -07:00
fscache	Add a dummy printk function for the maintenance of unused printks	2010-08-12 09:51:35 -07:00
fuse	fuse: Initialize total_len in fuse_retrieve()	2010-10-04 10:45:32 +02:00
gfs2	GFS2: gfs2_logd should be using interruptible waits	2010-09-17 14:00:10 +01:00
hfs	convert remaining ->clear_inode() to ->evict_inode()	2010-08-09 16:48:37 -04:00
hfsplus	convert remaining ->clear_inode() to ->evict_inode()	2010-08-09 16:48:37 -04:00
hostfs	hostfs ->follow_link() braino	2010-08-18 06:21:10 -04:00
hpfs	switch hpfs to ->evict_inode()	2010-08-09 16:48:17 -04:00
hppfs	switch hppfs to ->evict_inode()	2010-08-09 16:48:16 -04:00
hugetlbfs	new helper: end_writeback()	2010-08-09 16:47:49 -04:00
isofs	isofs: Fix lseek() to position beyond 4 GB	2010-08-11 00:29:47 -04:00
jbd	remove SWRITE* I/O types	2010-08-18 01:09:01 -04:00
jbd2	remove SWRITE* I/O types	2010-08-18 01:09:01 -04:00
jffs2	Merge git://git.infradead.org/mtd-2.6	2010-08-10 11:49:21 -07:00
jfs	jfs: don't allow os2 xattr namespace overlap with others	2010-08-10 15:33:09 -07:00
lockd
logfs	logfs: kill BKL	2010-08-14 00:24:24 +02:00
minix	minix: fix regression in minix_mkdir()	2010-09-09 18:57:25 -07:00
ncpfs	Merge branch 'bkl/ioctl' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing	2010-08-10 13:58:28 -07:00
nfs	SUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependencies	2010-09-12 19:57:50 -04:00
nfs_common
nfsd	nfsd: fix BUG at fs/nfsd/nfsfh.h:199 on unlink	2010-10-13 15:48:55 -04:00
nilfs2	nilfs2: fix leak of shadow dat inode in error path of load_nilfs	2010-08-30 10:18:03 +09:00
nls
notify	fanotify: disable fanotify syscalls	2010-10-11 18:15:28 -07:00
ntfs	convert remaining ->clear_inode() to ->evict_inode()	2010-08-09 16:48:37 -04:00
ocfs2	ocfs2: Don't walk off the end of fast symlinks.	2010-09-29 17:33:05 -07:00
omfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/bcopeland/omfs	2010-08-10 11:47:36 -07:00
openpromfs
partitions	[S390] partitions: fix build error in ibm partition detection code	2010-08-13 10:06:55 +02:00
proc	proc: make /proc/pid/limits world readable	2010-10-01 10:50:59 -07:00
qnx4	get rid of cont_write_begin_newtrunc	2010-08-09 16:47:31 -04:00
quota	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-08-10 11:26:52 -07:00
ramfs	check ATTR_SIZE contraints in inode_change_ok	2010-08-09 16:47:39 -04:00
reiserfs	reiserfs: fix unwanted reiserfs lock recursion	2010-10-01 10:50:59 -07:00
romfs
smbfs	switch smbfs to evict_inode()	2010-08-09 16:48:00 -04:00
squashfs	Squashfs: fix checkpatch.pl warnings	2010-08-08 22:29:33 +00:00
sysfs	sysfs: checking for NULL instead of ERR_PTR	2010-09-03 17:26:28 -07:00
sysv	fs/sysv/super.c: add support for non-PDP11 v7 filesystems	2010-08-11 08:59:23 -07:00
ubifs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-08-10 11:26:52 -07:00
udf	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6	2010-08-10 11:26:52 -07:00
ufs	remove SWRITE* I/O types	2010-08-18 01:09:01 -04:00
xfs	xfs: properly account for reclaimed inodes	2010-10-06 22:35:48 -05:00
aio.c	aio: do not return ERESTARTSYS as a result of AIO	2010-09-22 17:22:39 -07:00
anon_inodes.c	Revert "anon_inode: set S_IFREG on the anon_inode"	2010-05-27 22:03:05 -04:00
attr.c	check ATTR_SIZE contraints in inode_change_ok	2010-08-09 16:47:39 -04:00
bad_inode.c	bkl: Remove locked .ioctl file operation	2010-08-14 00:24:24 +02:00
binfmt_aout.c	Don't dump task struct in a.out core-dumps	2010-10-14 10:57:40 -07:00
binfmt_elf_fdpic.c	binfmt_elf_fdpic: Fix clear_user() error handling	2010-06-01 08:11:06 -07:00
binfmt_elf.c
binfmt_em86.c
binfmt_flat.c	flat: tweak default stack alignment	2010-06-29 15:29:31 -07:00
binfmt_misc.c	binfmt_misc: fix binfmt_misc priority	2010-09-09 18:57:24 -07:00
binfmt_script.c	Make do_execve() take a const filename pointer	2010-08-17 18:07:43 -07:00
binfmt_som.c
bio-integrity.c	fs/bio-integrity.c: return -ENOMEM on kmalloc failure	2010-08-23 13:36:59 +02:00
bio.c	block: unify flags for struct bio and struct request	2010-08-07 18:20:39 +02:00
block_dev.c	blkdev: cgroup whitelist permission fix	2010-08-11 08:59:18 -07:00
buffer.c	remove SWRITE* I/O types	2010-08-18 01:09:01 -04:00
char_dev.c	char: Mark /dev/zero and /dev/kmem as not capable of writeback	2010-09-22 09:48:47 +02:00
compat_binfmt_elf.c
compat_ioctl.c	bkl: Remove locked .ioctl file operation	2010-08-14 00:24:24 +02:00
compat.c	Prevent freeing uninitialized pointer in compat_do_readv_writev	2010-09-22 17:22:38 -07:00
dcache.c	fs: brlock vfsmount_lock	2010-08-18 08:35:48 -04:00
dcookies.c
direct-io.c	O_DIRECT: fix the splitting up of contiguous I/O	2010-09-09 18:57:22 -07:00
drop_caches.c	simplify checks for I_CLEAR/I_FREEING	2010-08-09 16:47:44 -04:00
eventfd.c
eventpoll.c	sched, wait: Use wrapper functions	2010-05-11 17:43:58 +02:00
exec.c	Export dump_{write,seek} to binary loader modules	2010-10-14 19:15:28 -07:00
fcntl.c	vfs: take O_NONBLOCK out of the O_* uniqueness test	2010-09-09 18:57:25 -07:00
fifo.c
file_table.c	fs: scale files_lock	2010-08-18 08:35:48 -04:00
file.c	vfs: use kmalloc() to allocate fdmem if possible	2010-08-11 08:59:02 -07:00
filesystems.c
fs_struct.c	fs: fs_struct rwlock to spinlock	2010-08-18 08:35:46 -04:00
fs-writeback.c	Add new functions for triggering inode writeback	2010-10-29 11:25:29 -04:00
generic_acl.c	vfs: update ctime when changing the file's permission by setfacl	2010-08-18 01:04:22 -04:00
inode.c	Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify	2010-08-10 11:39:13 -07:00
internal.h	fs: brlock vfsmount_lock	2010-08-18 08:35:48 -04:00
ioctl.c	bkl: Remove locked .ioctl file operation	2010-08-14 00:24:24 +02:00
ioprio.c
Kconfig	fs/Kconfig: Fix typo Userpace -> Userspace	2010-07-20 17:30:22 +02:00
Kconfig.binfmt
libfs.c	check ATTR_SIZE contraints in inode_change_ok	2010-08-09 16:47:39 -04:00
locks.c
Makefile	Take statfs variants to fs/statfs.c	2010-05-21 18:31:17 -04:00
mbcache.c	mbcache: Limit the maximum number of cache entries	2010-08-18 06:24:41 -04:00
mpage.c
namei.c	fs: brlock vfsmount_lock	2010-08-18 08:35:48 -04:00
namespace.c	VFS: Sanity check mount flags passed to change_mnt_propagation()	2010-09-07 13:46:20 -07:00
nfsctl.c
no-block.c
open.c	fs: cleanup files_lock locking	2010-08-18 08:35:47 -04:00
pipe.c	pipe: fix check in "set size" fcntl	2010-06-10 19:08:34 +02:00
pnode.c	fs: brlock vfsmount_lock	2010-08-18 08:35:48 -04:00
pnode.h
posix_acl.c
read_write.c	fsnotify: pass a file instead of an inode to open, read, and write	2010-07-28 09:58:32 -04:00
read_write.h
readdir.c	vfs: fix warning: 'dirent' is used uninitialized in this function	2010-08-09 20:45:05 -07:00
select.c
seq_file.c
signalfd.c	signalfd: fill in ssi_int for posix timers and message queues	2010-08-11 08:59:20 -07:00
splice.c	splice: fix misuse of SPLICE_F_NONBLOCK	2010-08-07 18:52:56 +02:00
stack.c
stat.c	Mark arguments to certain syscalls as being const	2010-08-13 16:53:13 -07:00
statfs.c	add f_flags to struct statfs(64)	2010-08-09 16:48:44 -04:00
super.c	fs: scale files_lock	2010-08-18 08:35:48 -04:00
sync.c	get rid of file_fsync()	2010-08-09 16:47:43 -04:00
timerfd.c	fs/timerfd.c: make use of wait_event_interruptible_locked_irq()	2010-05-20 13:21:42 -07:00
utimes.c	Mark arguments to certain syscalls as being const	2010-08-13 16:53:13 -07:00
xattr_acl.c
xattr.c	fs: xattr_handler table should be const	2010-05-21 18:31:18 -04:00