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linux/fs/ocfs2
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Xue jiufei ac4fef4d23 ocfs2/dlm: do not purge lockres that is queued for assert master 
When workqueue is delayed, it may occur that a lockres is purged while it
is still queued for master assert.  it may trigger BUG() as follows.

N1                                         N2
dlm_get_lockres()
->dlm_do_master_requery
                                  is the master of lockres,
                                  so queue assert_master work

                                  dlm_thread() start running
                                  and purge the lockres

                                  dlm_assert_master_worker()
                                  send assert master message
                                  to other nodes
receiving the assert_master
message, set master to N2

dlmlock_remote() send create_lock message to N2, but receive DLM_IVLOCKID,
if it is RECOVERY lockres, it triggers the BUG().

Another BUG() is triggered when N3 become the new master and send
assert_master to N1, N1 will trigger the BUG() because owner doesn't
match.  So we should not purge lockres when it is queued for assert
master.

Signed-off-by: joyce.xue <xuejiufei@huawei.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-23 16:47:45 -07:00
..
cluster ocfs2/o2net: incorrect to terminate accepting connections loop upon rejecting an invalid one 2014-06-10 15:34:46 -07:00
dlm ocfs2/dlm: do not purge lockres that is queued for assert master 2014-06-23 16:47:45 -07:00
dlmfs ocfs2: remove versioning information 2014-01-21 16:19:41 -08:00
acl.c ocfs2: call ocfs2_update_inode_fsync_trans when updating any inode 2014-04-03 16:20:56 -07:00
acl.h ocfs2: use generic posix ACL infrastructure 2014-01-25 23:58:21 -05:00
alloc.c ocfs2: fix umount hang while shutting down truncate log 2014-06-04 16:53:54 -07:00
alloc.h
aops.c switch {__,}blockdev_direct_IO() to iov_iter 2014-05-06 17:32:46 -04:00
aops.h ocfs2: change ip_unaligned_aio to of type mutex from atomit_t 2014-04-03 16:20:53 -07:00
blockcheck.c
blockcheck.h
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
dcache.c ocfs2: revert iput deferring code in ocfs2_drop_dentry_lock 2014-04-03 16:20:55 -07:00
dcache.h ocfs2: revert iput deferring code in ocfs2_drop_dentry_lock 2014-04-03 16:20:55 -07:00
dir.c ocfs2: call ocfs2_update_inode_fsync_trans when updating any inode 2014-04-03 16:20:56 -07:00
dir.h [readdir] convert ocfs2 2013-06-29 12:57:02 +04:00
dlmglue.c ocfs2: remove some unused code 2014-06-04 16:53:55 -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
export.h
extent_map.c ocfs2: fix the end cluster offset of FIEMAP 2013-09-11 15:56:53 -07:00
extent_map.h
file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-06-12 10:30:18 -07:00
file.h
heartbeat.c
heartbeat.h
inode.c mm + fs: store shadow entries in page cache 2014-04-03 16:21:01 -07:00
inode.h ocfs2: remove OCFS2_INODE_SKIP_DELETE flag 2014-04-03 16:20:54 -07:00
ioctl.c fs/ocfs2/ioctl.c: add static to local functions 2014-06-04 16:53:54 -07:00
ioctl.h
journal.c ocfs2: limit printk when journal is aborted 2014-06-04 16:53:54 -07:00
journal.h ocfs2: improve fsync efficiency and fix deadlock between aio_write and sync_file 2014-04-03 16:20:53 -07:00
Kconfig
localalloc.c ocfs2: free allocated clusters if error occurs after ocfs2_claim_clusters 2014-02-06 13:48:51 -08:00
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
Makefile ocfs2: remove versioning information 2014-01-21 16:19:41 -08:00
mmap.c
mmap.h
move_extents.c ocfs2: rollback alloc_dinode counts when ocfs2_block_group_set_bits() failed 2014-04-03 16:20:56 -07:00
move_extents.h
namei.c ocfs2: manually do the iput once ocfs2_add_entry failed in ocfs2_symlink and ocfs2_mknod 2014-06-23 16:47:45 -07:00
namei.h
ocfs1_fs_compat.h
ocfs2_fs.h
ocfs2_ioctl.h
ocfs2_lockid.h
ocfs2_lockingver.h
ocfs2_trace.h ocfs2: fix a tiny race when running dirop_fileop_racer 2014-06-23 16:47:45 -07:00
ocfs2.h ocfs2: fix umount hang while shutting down truncate log 2014-06-04 16:53:54 -07:00
quota_global.c ocfs2: implement delayed dropping of last dquot reference 2014-04-03 16:20:54 -07:00
quota_local.c ocfs2: fix quota file corruption 2014-03-04 07:55:48 -08:00
quota.h ocfs2: implement delayed dropping of last dquot reference 2014-04-03 16:20:54 -07:00
refcounttree.c ocfs2: refcount: take rw_lock in ocfs2_reflink 2014-06-23 16:47:45 -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
reservations.h
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
slot_map.h
stack_o2cb.c ocfs2: pass ocfs2_cluster_connection to ocfs2_this_node 2014-01-21 16:19:41 -08:00
stack_user.c ocfs2: fix sparse non static symbol warning 2014-01-21 16:19:42 -08:00
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: iput inode alloc when failed locally 2014-04-03 16:20:57 -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 ocfs2: revert "ocfs2: fix NULL pointer dereference when dismount and ocfs2rec simultaneously" 2014-06-23 16:47:45 -07:00
super.h
symlink.c
symlink.h
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
xattr.c ocfs2: pass "new" parameter to ocfs2_init_xattr_bucket 2014-04-03 16:20:57 -07:00
xattr.h ocfs2: use generic posix ACL infrastructure 2014-01-25 23:58:21 -05:00