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linux/fs/xfs/linux-2.6
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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 Slab API: remove useless ctor parameter and reorder parameters 2007-10-17 08:42:45 -07:00
mrlock.h [XFS] shrink mrlock_t 2008-04-29 15:54:02 +10:00
mutex.h [XFS] mutex fallout - fix debug builds and remove no-longer-useful comment. 2006-01-16 16:21:34 +11:00
sema.h Convert asm/semaphore.h users to linux/semaphore.h 2008-04-18 22:22:54 -04:00
sv.h [XFS] Collapse sv_init and init_sv into just the one interface. 2006-09-28 11:05:52 +10:00
time.h [XFS] Update license/copyright notices to match the prefered SGI 2005-11-02 14:58:39 +11:00
xfs_aops.c [XFS] Catch unwritten extent conversion errors. 2008-04-18 12:00:58 +10:00
xfs_aops.h [XFS] move v_iocount from bhv_vnode to xfs_inode 2007-10-16 11:38:56 +10:00
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] Remove KERNEL_VERSION macros from xfs_dmapi.h 2006-11-11 18:05:06 +11:00
xfs_export.c [XFS] kill di_mode checks after xfs_iget 2008-04-29 15:53:31 +10:00
xfs_export.h xfs: new export ops 2007-10-22 08:13:20 -07:00
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] decontaminate vnode operations from behavior details 2007-10-15 16:54:29 +10:00
xfs_globals.c [XFS] Fix up sparse warnings. 2008-02-07 18:14:38 +11:00
xfs_globals.h [XFS] Remove xfs_physmem 2007-10-15 16:40:14 +10:00
xfs_ioctl32.c [XFS] Fix up sparse warnings. 2008-02-07 18:14:38 +11:00
xfs_ioctl32.h [XFS] Fix compiler warning from xfs_file_compat_invis_ioctl prototype. 2006-03-20 13:25:48 +11:00
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] call common xfs vnode-level helpers directly and remove vnode operations 2007-10-16 10:40:00 +10:00
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 [PATCH] for_each_possible_cpu: xfs 2006-06-23 07:42:45 -07:00
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] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_sysctl.h [XFS] Concurrent Multi-File Data Streams 2007-07-14 15:40:53 +10:00
xfs_version.h [XFS] Update license/copyright notices to match the prefered SGI 2005-11-02 14:58:39 +11:00
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