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Christoph Hellwig 070ecdca54 xfs: skip writeback from reclaim context 
Allowing writeback from reclaim context causes massive problems with stack
overflows as we can call into the writeback code which tends to be a heavy
stack user both in the generic code and XFS from random contexts that
perform memory allocations.

Follow the example of btrfs (and in slightly different form ext4) and refuse
to write out data from reclaim context.  This issue should really be handled
by the VM so that we can tune better for this case, but until we get it
sorted out there we have to hack around this in each filesystem with a
complex writeback path.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2010-06-03 16:22:29 +10:00
..
9p
9p: add bdi backing to mount session
2010-04-22 11:42:00 +02:00
adfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
affs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
afs
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
2010-04-28 07:56:05 -07:00
autofs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
autofs4
autofs4-2.6.34-rc1 - fix link_count usage
2010-05-10 09:48:10 -07:00
befs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
bfs
pass writeback_control to ->write_inode
2010-03-05 13:25:52 -05:00
btrfs
Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
2010-05-15 12:55:31 -07:00
cachefiles
CacheFiles: Fix error handling in cachefiles_determine_cache_security()
2010-05-12 18:23:58 -07:00
ceph
ceph: preserve seq # on requeued messages after transient transport errors
2010-05-11 21:20:38 -07:00
cifs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
2010-05-13 10:36:16 -07:00
coda
coda: add bdi backing to mount session
2010-04-22 12:12:40 +02:00
configfs
Fix the regression created by "set S_DEAD on unlink()..." commit
2010-05-15 07:16:33 -04:00
cramfs
…
debugfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
devpts
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
dlm
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ecryptfs
ecryptfs: add bdi backing to mount session
2010-04-22 12:22:04 +02:00
efs
…
exofs
exofs: Fix "add bdi backing to mount session" fall out
2010-04-29 20:35:29 +02:00
exportfs
nfs: new subdir Documentation/filesystems/nfs
2009-10-27 19:34:04 -04:00
ext2
ext2: symlink must be handled via filesystem specific operation
2010-04-12 21:11:25 +02:00
ext3
ext3: symlink must be handled via filesystem specific operation
2010-04-12 21:11:39 +02:00
ext4
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
2010-04-25 10:01:51 -07:00
fat
Merge branch 'master' into export-slabh
2010-04-05 11:37:28 +09:00
freevxfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
fscache
fs-cache: order the debugfs stats correctly
2010-04-07 08:38:05 -07:00
fuse
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
gfs2
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
hfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
hfsplus
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
hostfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
hpfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
hppfs
hppfs can use existing proc_mnt, no need for do_kern_mount() in there
2010-03-03 14:08:00 -05:00
hugetlbfs
Untangling ima mess, part 1: alloc_file()
2009-12-16 12:16:47 -05:00
isofs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
jbd
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
jbd2
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
jffs2
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
jfs
JFS: Free sbi memory in error path
2010-05-15 07:16:34 -04:00
lockd
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
logfs
Fix double-free in logfs
2010-05-15 07:16:33 -04:00
minix
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ncpfs
ncpfs: add bdi backing to mount session
2010-04-22 12:31:11 +02:00
nfs
NFS: Fix RCU issues in the NFSv4 delegation code
2010-05-01 12:37:18 -04:00
nfs_common
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
nfsd
nfsd4: bug in read_buf
2010-04-26 15:39:08 -04:00
nilfs2
nilfs2: fix sync silent failure
2010-05-03 07:36:01 -07:00
nls
Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
2009-09-30 09:31:14 -07:00
notify
Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify
2010-05-14 11:49:42 -07:00
ntfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
ocfs2
ocfs2: Avoid a gcc warning in ocfs2_wipe_inode().
2010-05-03 19:15:49 -07:00
omfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
openpromfs
…
partitions
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
proc
revert "procfs: provide stack information for threads" and its fixup commits
2010-05-11 17:33:41 -07:00
qnx4
fs/qnx4: decrement sizeof size in strncmp
2010-02-04 11:55:46 +01:00
quota
quota: Convert __DQUOT_PARANOIA symbol to standard config option
2010-04-20 18:25:25 +02:00
ramfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
reiserfs
reiserfs: fix corruption during shrinking of xattrs
2010-04-24 11:31:24 -07:00
romfs
fix leak in romfs_fill_super()
2010-01-26 22:22:26 -05:00
smbfs
smbfs: add bdi backing to mount session
2010-04-22 12:37:07 +02:00
squashfs
squashfs: fix potential buffer over-run on 4K block file systems
2010-04-25 02:09:05 +01:00
sysfs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
sysv
fs/sysv: dereferencing ERR_PTR()
2010-05-15 07:16:33 -04:00
ubifs
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
udf
udf: add speciffic ->setattr callback
2010-04-08 15:35:20 +02:00
ufs
ufs: make solaris fsck happy
2010-03-12 15:52:35 -08:00
xfs
xfs: skip writeback from reclaim context
2010-06-03 16:22:29 +10:00
aio.c
aio: remove unused field
2009-12-16 07:20:13 -08:00
anon_inodes.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
attr.c
fs: use rlimit helpers
2010-03-06 11:26:29 -08:00
bad_inode.c
…
binfmt_aout.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
binfmt_elf_fdpic.c
Remove redundant check for CONFIG_MMU
2010-04-27 09:01:26 -07:00
binfmt_elf.c
coredump: pass mm->flags as a coredump parameter for consistency
2010-03-06 11:26:46 -08:00
binfmt_em86.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
binfmt_flat.c
uclinux: error message when FLAT reloc symbol is invalid, v2
2010-04-21 13:28:49 +10:00
binfmt_misc.c
…
binfmt_script.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
binfmt_som.c
Split 'flush_old_exec' into two functions
2010-01-29 08:22:01 -08:00
bio-integrity.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
bio.c
Merge branch 'master' into for-linus
2010-03-19 08:05:10 +01:00
block_dev.c
fs/block_dev.c: fix performance regression in O_DIRECT|O_SYNC writes to block devices
2010-04-24 11:31:26 -07:00
buffer.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2010-03-12 16:04:50 -08:00
char_dev.c
fs/char_dev.c: remove useless loop
2009-09-24 07:21:03 -07:00
compat_binfmt_elf.c
elf coredump: replace ELF_CORE_EXTRA_* macros by functions
2010-03-06 11:26:45 -08:00
compat_ioctl.c
pktcdvd: improve BKL and compat_ioctl.c usage
2010-04-29 08:44:37 -07:00
compat.c
revert "procfs: provide stack information for threads" and its fixup commits
2010-05-11 17:33:41 -07:00
dcache.c
fix race in d_splice_alias()
2010-03-03 14:13:08 -05:00
dcookies.c
…
direct-io.c
dio: fix use-after-free
2009-12-17 04:52:13 -05:00
drop_caches.c
sysctl: remove "struct file *" argument of ->proc_handler
2009-09-24 07:21:04 -07:00
eventfd.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
eventpoll.c
anonfd: Allow making anon files read-only
2009-12-22 12:27:34 -05:00
exec.c
revert "procfs: provide stack information for threads" and its fixup commits
2010-05-11 17:33:41 -07:00
fcntl.c
fs: use rlimit helpers
2010-03-06 11:26:29 -08:00
fifo.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
file_table.c
vfs: take f_lock on modifying f_mode after open time
2010-03-06 11:26:25 -08:00
file.c
fs: use rlimit helpers
2010-03-06 11:26:29 -08:00
filesystems.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
fs_struct.c
…
fs-writeback.c
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
2010-04-09 11:50:29 -07:00
generic_acl.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
inode.c
dquot: move dquot initialization responsibility into the filesystem
2010-03-05 00:20:30 +01:00
internal.h
Take vfsmount_lock to fs/internal.h
2010-03-03 14:07:59 -05:00
ioctl.c
Cleanup generic block based fiemap
2010-04-23 10:39:48 -07:00
ioprio.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
Kconfig
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2010-03-19 09:43:06 -07:00
Kconfig.binfmt
…
libfs.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
locks.c
Merge branch 'for-next' into for-linus
2010-03-08 16:55:37 +01:00
Makefile
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
2010-03-19 09:43:06 -07:00
mbcache.c
…
mpage.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
namei.c
Fix the regression created by "set S_DEAD on unlink()..." commit
2010-05-15 07:16:33 -04:00
namespace.c
Fix the regression created by "set S_DEAD on unlink()..." commit
2010-05-15 07:16:33 -04:00
nfsctl.c
Switch may_open() and break_lease() to passing O_...
2010-03-03 13:00:21 -05:00
no-block.c
…
open.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
pipe.c
fs: no games with DCACHE_UNHASHED
2009-12-17 10:51:40 -05:00
pnode.c
Kill CL_PROPAGATION, sanitize fs/pnode.c:get_source()
2010-03-03 13:00:22 -05:00
pnode.h
VFS: Clean up shared mount flag propagation
2010-03-03 14:07:55 -05:00
posix_acl.c
…
read_write.c
do_sync_read/write() should set kiocb.ki_nbytes to be consistent
2010-03-24 16:43:29 -07:00
read_write.h
…
readdir.c
…
select.c
Add generic sys_old_select()
2010-03-12 15:52:32 -08:00
seq_file.c
seq_file: fix new kernel-doc warnings
2010-03-07 15:48:26 -08:00
signalfd.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
splice.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
stack.c
VFS/fsstack: handle 32-bit smp + preempt + large files in fsstack_copy_inode_size
2009-12-17 10:58:17 -05:00
stat.c
Add unlocked version of inode_add_bytes() function
2009-12-23 13:33:54 +01:00
super.c
fs: fs/super.c needs to include backing-dev.h for !CONFIG_BLOCK
2010-04-29 20:33:35 +02:00
sync.c
Catch filesystems lacking s_bdi
2010-04-25 08:54:42 +02:00
timerfd.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
utimes.c
…
xattr_acl.c
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
2010-03-30 22:02:32 +09:00
xattr.c
sanitize xattr handler prototypes
2009-12-16 12:16:49 -05:00