Christoph Hellwig 6ab455eeaf [XFS] Fix memory corruption with small buffer reads ...

When we have multiple buffers in a single page for a blocksize == pagesize
filesystem we might overwrite the page contents if two callers hit it
shortly after each other. To prevent that we need to keep the page locked
until I/O is completed and the page marked uptodate.

Thanks to Eric Sandeen for triaging this bug and finding a reproducible
testcase and Dave Chinner for additional advice.

This should fix kernel.org bz #10421.

Tested-by: Eric Sandeen <sandeen@sandeen.net>

SGI-PV: 981813
SGI-Modid: xfs-linux-melb:xfs-kern:31173a

Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

2008-05-23 18:12:49 +10:00

..

kmem.c

[XFS] replace remaining __FUNCTION__ occurrences

2008-04-18 11:51:26 +10:00

kmem.h

…

mrlock.h

[XFS] shrink mrlock_t

2008-04-29 15:54:02 +10:00

mutex.h

…

sema.h

Convert asm/semaphore.h users to linux/semaphore.h

2008-04-18 22:22:54 -04:00

sv.h

…

time.h

…

xfs_aops.c

[XFS] Catch unwritten extent conversion errors.

2008-04-18 12:00:58 +10:00

xfs_aops.h

…

xfs_buf.c

[XFS] Fix memory corruption with small buffer reads

2008-05-23 18:12:49 +10:00

xfs_buf.h

[XFS] Fix memory corruption with small buffer reads

2008-05-23 18:12:49 +10:00

xfs_cred.h

[XFS] Replace __inline with inline

2008-04-18 11:51:15 +10:00

xfs_dmapi_priv.h

…

xfs_export.c

[XFS] kill di_mode checks after xfs_iget

2008-04-29 15:53:31 +10:00

xfs_export.h

…

xfs_file.c

[XFS] Fix fsync() b0rkage.

2008-05-23 15:25:25 +10:00

xfs_fs_subr.c

[XFS] vnode cleanup in xfs_fs_subr.c

2008-04-18 11:39:03 +10:00

xfs_fs_subr.h

…

xfs_globals.c

[XFS] Fix up sparse warnings.

2008-02-07 18:14:38 +11:00

xfs_globals.h

…

xfs_ioctl32.c

[XFS] Fix up sparse warnings.

2008-02-07 18:14:38 +11:00

xfs_ioctl32.h

…

xfs_ioctl.c

[XFS] Cleanup xfs_attr a bit with xfs_name and remove cred

2008-04-29 15:54:55 +10:00

xfs_iops.c

[XFS] remove manual lookup from xfs_rename and simplify locking

2008-04-29 15:54:12 +10:00

xfs_iops.h

…

xfs_linux.h

[XFS] Include linux/random.h in all builds, not just debug builds.

2008-04-30 18:17:44 +10:00

xfs_lrw.c

[XFS] shrink mrlock_t

2008-04-29 15:54:02 +10:00

xfs_lrw.h

[XFS] remove sendfile leftovers

2008-04-29 16:08:14 +10:00

xfs_stats.c

…

xfs_stats.h

[XFS] Replace __inline with inline

2008-04-18 11:51:15 +10:00

xfs_super.c

[XFS] Add xfs_icsb_sync_counters_locked for when m_sb_lock already held

2008-04-29 15:57:11 +10:00

xfs_super.h

[XFS] Remove CONFIG_XFS_SECURITY.

2008-04-18 12:04:19 +10:00

xfs_sysctl.c

…

xfs_sysctl.h

…

xfs_version.h

…

xfs_vfs.h

[XFS] Remove periodic logging of in-core superblock counters.

2008-04-18 12:03:12 +10:00

xfs_vnode.c

[XFS] add __init/__exit mark to specific init/cleanup functions

2008-02-07 18:25:19 +11:00

xfs_vnode.h

[XFS] Fix fsync() b0rkage.

2008-05-23 15:25:25 +10:00