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Al Viro d311d79de3 fix O_SYNC|O_APPEND syncing the wrong range on write() 
It actually goes back to 2004 ([PATCH] Concurrent O_SYNC write support)
when sync_page_range() had been introduced; generic_file_write{,v}() correctly
synced
	pos_after_write - written .. pos_after_write - 1
but generic_file_aio_write() synced
	pos_before_write .. pos_before_write + written - 1
instead.  Which is not the same thing with O_APPEND, obviously.
A couple of years later correct variant had been killed off when
everything switched to use of generic_file_aio_write().

All users of generic_file_aio_write() are affected, and the same bug
has been copied into other instances of ->aio_write().

The fix is trivial; the only subtle point is that generic_write_sync()
ought to be inlined to avoid calculations useless for the majority of
calls.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
 		2014-02-09 15:18:09 -05:00
..
Kconfig ext4: fix Kconfig documentation for CONFIG_EXT4_DEBUG 2013-04-21 20:32:03 -04:00
Makefile ext4: Remove CONFIG_EXT4_FS_XATTR 2012-12-10 16:30:43 -05:00
acl.c ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
acl.h ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
balloc.c ext4: don't count free clusters from a corrupt block group 2013-10-31 11:46:31 -04:00
bitmap.c ext4: Checksum the block bitmap properly with bigalloc enabled 2012-10-22 00:34:32 -04:00
block_validity.c fs/ext4: use rbtree postorder iteration helper instead of opencoding 2014-01-23 16:37:03 -08:00
dir.c fs/ext4: use rbtree postorder iteration helper instead of opencoding 2014-01-23 16:37:03 -08:00
ext4.h ext4: add explicit casts when masking cluster sizes 2013-12-20 09:29:35 -05:00
ext4_extents.h ext4: isolate ext4_extents.h file 2013-08-28 14:47:06 -04:00
ext4_jbd2.c ext4: call ext4_error_inode() if jbd2_journal_dirty_metadata() fails 2013-12-02 09:31:36 -05:00
ext4_jbd2.h ext4: Fix misspellings using 'codespell' tool 2013-08-28 14:40:12 -04:00
extents.c ext4: fix a typo in extents.c 2014-01-06 14:05:23 -05:00
extents_status.c fs: convert fs shrinkers to new scan/count API 2013-09-10 18:56:31 -04:00
extents_status.h ext4: isolate ext4_extents.h file 2013-08-28 14:47:06 -04:00
file.c fix O_SYNC|O_APPEND syncing the wrong range on write() 2014-02-09 15:18:09 -05:00
fsync.c ext4: Fix fsync error handling after filesystem abort 2013-06-12 22:38:04 -04:00
hash.c ext4: reduce one "if" comparison in ext4_dirhash() 2013-02-01 22:33:21 -05:00
ialloc.c ext4: use prandom_u32() instead of get_random_bytes() 2013-11-08 00:14:53 -05:00
indirect.c ext4: isolate ext4_extents.h file 2013-08-28 14:47:06 -04:00
inline.c ext4: delete "set but not used" variables 2014-01-11 13:26:56 -05:00
inode.c Bug fixes and cleanups for ext4. We also enable the punch hole 2014-01-28 08:54:16 -08:00
ioctl.c ext4: delete "set but not used" variables 2014-01-11 13:26:56 -05:00
mballoc.c ext4: add explicit casts when masking cluster sizes 2013-12-20 09:29:35 -05:00
mballoc.h ext4: use module parameters instead of debugfs for mballoc_debug 2013-02-09 16:28:20 -05:00
migrate.c ext4: Fix misspellings using 'codespell' tool 2013-08-28 14:40:12 -04:00
mmp.c ext4: use prandom_u32() instead of get_random_bytes() 2013-11-08 00:14:53 -05:00
move_extent.c vfs: pull ext4's double-i_mutex-locking into common code 2013-11-09 00:16:39 -05:00
namei.c Bug fixes and cleanups for ext4. We also enable the punch hole 2014-01-28 08:54:16 -08:00
page-io.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
resize.c ext4: fix corruption when online resizing a fs with 1K block size 2013-07-01 08:12:08 -04:00
super.c ext4: Do not reserve clusters when fs doesn't support extents 2013-12-08 21:11:59 -05:00
symlink.c ext4: Remove CONFIG_EXT4_FS_XATTR 2012-12-10 16:30:43 -05:00
truncate.h ext4: move common truncate functions to header file 2011-06-27 19:16:04 -04:00
xattr.c ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
xattr.h ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
xattr_security.c Merge branch 'for_linus' into for_linus_merged 2012-01-10 11:54:07 -05:00
xattr_trusted.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00
xattr_user.c ext2/3/4: delete unneeded includes of module.h 2012-01-09 13:52:10 +01:00