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	…
Makefile	…
acl.c	ocfs2: remove unnecessary else in ocfs2_set_acl()	2015-02-10 14:30:28 -08:00
acl.h	…
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	…
blockcheck.h	…
buffer_head_io.c	…
buffer_head_io.h	…
dcache.c	VFS: normal filesystems (and lustre): d_inode() annotations	2015-04-15 15:06:57 -04:00
dcache.h	…
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	…
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	…
extent_map.h	…
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	…
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	…
ioctl.h	…
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	…
locks.c	…
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	…
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_lockid.h	…
ocfs2_lockingver.h	…
ocfs2_trace.h	…
quota.h	ocfs2: Move OLQF_CLEAN flag out of generic quota flags	2015-01-21 19:21:30 +01:00
quota_global.c	…
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	…
reservations.c	ocfs2: make resv_lock spinlock static	2015-02-10 14:30:29 -08:00
reservations.h	…
resize.c	…
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	…
stackglue.h	…
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	…
super.c	Revert "ocfs2: incorrect check for debugfs returns"	2015-04-21 09:17:28 -07:00
super.h	…
symlink.c	…
symlink.h	…
sysfile.c	…
sysfile.h	…
uptodate.c	…
uptodate.h	…
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	…