Junxiao Bi b1432a2a35 ocfs2: dlm: fix race between purge and get lock resource ... There is a race window in dlm_get_lock_resource(), which may return a lock resource which has been purged. This will cause the process to hang forever in dlmlock() as the ast msg can't be handled due to its lock resource not existing. dlm_get_lock_resource { ... spin_lock(&dlm->spinlock); tmpres = __dlm_lookup_lockres_full(dlm, lockid, namelen, hash); if (tmpres) { spin_unlock(&dlm->spinlock); >>>>>>>> race window, dlm_run_purge_list() may run and purge the lock resource spin_lock(&tmpres->spinlock); ... spin_unlock(&tmpres->spinlock); } } Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Cc: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-05-05 17:10:11 -07:00
..
cluster	Revert "ocfs2: incorrect check for debugfs returns"	2015-04-21 09:17:28 -07:00
dlm	ocfs2: dlm: fix race between purge and get lock resource	2015-05-05 17:10:11 -07:00
dlmfs	VFS: normal filesystems (and lustre): d_inode() annotations	2015-04-15 15:06:57 -04:00
Kconfig	ocfs2: Make OCFS2_FS depend on CONFIGFS_FS	2011-01-16 21:22:40 +00:00
Makefile	ocfs2: remove versioning information	2014-01-21 16:19:41 -08:00
acl.c	ocfs2: remove unnecessary else in ocfs2_set_acl()	2015-02-10 14:30:28 -08:00
acl.h	ocfs2: use generic posix ACL infrastructure	2014-01-25 23:58:21 -05:00
alloc.c	ocfs2: one function call less in ocfs2_merge_rec_right() after error detection	2015-04-14 16:48:57 -07:00
alloc.h	ocfs2: reflink: fix slow unlink for refcounted file	2014-12-18 19:08:11 -08:00
aops.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-16 23:27:56 -04:00
aops.h	fs: move struct kiocb to fs.h	2015-03-25 20:28:11 -04:00
blockcheck.c	ocfs2: kill endianness abuses in blockcheck.c	2012-05-29 23:28:35 -04:00
blockcheck.h	ocfs2: Add statistics for the checksum and ecc operations.	2009-06-03 19:15:36 -07:00
buffer_head_io.c	ocfs2: do not put bh when buffer_uptodate failed	2014-04-03 16:20:56 -07:00
buffer_head_io.h	ocfs2: Take the inode out of the metadata read/write paths.	2009-09-04 16:07:48 -07:00
dcache.c	VFS: normal filesystems (and lustre): d_inode() annotations	2015-04-15 15:06:57 -04:00
dcache.h	ocfs2: revert iput deferring code in ocfs2_drop_dentry_lock	2014-04-03 16:20:55 -07:00
dir.c	ocfs2: fix a typo in the copyright statement	2015-04-14 16:48:58 -07:00
dir.h	VFS: normal filesystems (and lustre): d_inode() annotations	2015-04-15 15:06:57 -04:00
dlmglue.c	Revert "ocfs2: incorrect check for debugfs returns"	2015-04-21 09:17:28 -07:00
dlmglue.h	ocfs2: avoid blocking in ocfs2_mark_lockres_freeing() in downconvert thread	2014-04-03 16:20:55 -07:00
export.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
export.h	…
extent_map.c	ocfs2: fix the end cluster offset of FIEMAP	2013-09-11 15:56:53 -07:00
extent_map.h	ocfs2: Implement llseek()	2011-07-25 14:58:15 -07:00
file.c	Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-15 13:22:56 -07:00
file.h	ocfs2: prepare some interfaces used in append direct io	2015-02-16 17:56:04 -08:00
heartbeat.c	ocfs2: Remove mlog(0) from fs/ocfs2/heartbeat.c	2011-02-23 21:17:39 +08:00
heartbeat.h	…
inode.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
inode.h	ocfs2: wait for orphan recovery first once append O_DIRECT write crash	2015-02-16 17:56:05 -08:00
ioctl.c	ocfs2: do not write error flag to user structure we cannot copy from/to	2014-08-29 16:28:16 -07:00
ioctl.h	Ocfs2: Move ocfs2 ioctl definitions from ocfs2_fs.h to newly added ocfs2_ioctl.h	2010-03-02 14:10:20 -08:00
journal.c	ocfs2: wait for orphan recovery first once append O_DIRECT write crash	2015-02-16 17:56:05 -08:00
journal.h	ocfs2: add functions to add and remove inode in orphan dir	2015-02-16 17:56:04 -08:00
localalloc.c	ocfs2: fix possible uninitialized variable access	2015-04-14 16:48:58 -07:00
localalloc.h	ocfs2: free allocated clusters if error occurs after ocfs2_claim_clusters	2014-02-06 13:48:51 -08:00
locks.c	ocfs2: flock: drop cross-node lock when failed locally	2014-04-03 16:20:56 -07:00
locks.h	…
mmap.c	mm: drop vm_ops->remap_pages and generic_file_remap_pages() stub	2015-02-10 14:30:30 -08:00
mmap.h	…
move_extents.c	ocfs2: remove bogus NULL check in ocfs2_move_extents()	2014-12-10 17:41:04 -08:00
move_extents.h	Ocfs2/move_extents: move/defrag extents within a certain range.	2011-05-25 15:17:12 +08:00
namei.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
namei.h	ocfs2: add functions to add and remove inode in orphan dir	2015-02-16 17:56:04 -08:00
ocfs1_fs_compat.h	…
ocfs2.h	ocfs2: make append_dio an incompat feature	2015-03-12 18:46:07 -07:00
ocfs2_fs.h	ocfs2: make append_dio an incompat feature	2015-03-12 18:46:07 -07:00
ocfs2_ioctl.h	Ocfs2/move_extents: Adding new ioctl code 'OCFS2_IOC_MOVE_EXT' to ocfs2.	2011-05-25 15:17:08 +08:00
ocfs2_lockid.h	ocfs2: Add new refcount tree lock resource in dlmglue.	2009-09-22 20:09:28 -07:00
ocfs2_lockingver.h	ocfs2_dlmfs: Enable the use of user cluster stacks.	2010-02-26 15:41:18 -08:00
ocfs2_trace.h	ocfs2: fix a tiny race when running dirop_fileop_racer	2014-06-23 16:47:45 -07:00
quota.h	ocfs2: Move OLQF_CLEAN flag out of generic quota flags	2015-01-21 19:21:30 +01:00
quota_global.c	ocfs2: Don't use MAXQUOTAS value	2014-09-17 11:59:12 +02:00
quota_local.c	Merge branch 'akpm' (patches from Andrew)	2015-02-10 16:45:56 -08:00
refcounttree.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
refcounttree.h	ocfs2: fix NULL pointer dereference in ocfs2_duplicate_clusters_by_page	2013-08-13 17:57:49 -07:00
reservations.c	ocfs2: make resv_lock spinlock static	2015-02-10 14:30:29 -08:00
reservations.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
resize.c	ocfs2: fix incorrect i_size of global bitmap inode after resize	2014-06-04 16:53:54 -07:00
resize.h	…
slot_map.c	ocfs2: one function call less in ocfs2_init_slot_info() after error detection	2015-04-14 16:48:57 -07:00
slot_map.h	…
stack_o2cb.c	ocfs2: avoid a pointless delay in o2cb_cluster_check()	2015-04-14 16:48:57 -07:00
stack_user.c	ocfs2: one function call less in user_cluster_connect() after error detection	2015-04-14 16:48:57 -07:00
stackglue.c	ocfs2: remove NULL assignments on static	2014-06-04 16:53:53 -07:00
stackglue.h	ocfs2: pass ocfs2_cluster_connection to ocfs2_this_node	2014-01-21 16:19:41 -08:00
suballoc.c	ocfs2: rollback the cleared bits if error occurs after ocfs2_block_group_clear_bits	2015-04-14 16:48:58 -07:00
suballoc.h	ocfs2: rollback alloc_dinode counts when ocfs2_block_group_set_bits() failed	2014-04-03 16:20:56 -07:00
super.c	Revert "ocfs2: incorrect check for debugfs returns"	2015-04-21 09:17:28 -07:00
super.h	treewide: use __printf not __attribute__((format(printf,...)))	2011-10-31 17:30:54 -07:00
symlink.c	ocfs2: Fix oops in ocfs2_fast_symlink_readpage() code path	2013-02-26 02:46:12 -05:00
symlink.h	ocfs: simplify symlink handling	2012-05-29 23:28:40 -04:00
sysfile.c	ocfs2: avoid system inode ref confusion by adding mutex lock	2014-04-03 16:20:57 -07:00
sysfile.h	…
uptodate.c	ocfs2: remove NULL assignments on static	2014-06-04 16:53:53 -07:00
uptodate.h	ocfs2: Pass struct ocfs2_caching_info to the journal functions.	2009-09-04 16:07:50 -07:00
xattr.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
xattr.h	ocfs2: use generic posix ACL infrastructure	2014-01-25 23:58:21 -05:00