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309e91911d
linux/fs/ocfs2
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piaojun 309e91911d ocfs2/dlm: solve a BUG when deref failed in dlm_drop_lockres_ref 
We found a BUG situation that lockres is migrated during deref described
below.  To solve the BUG, we could purge lockres directly when other
node says I did not have a ref.  Additionally, we'd better purge lockres
if master goes down, as no one will response deref done.

Node 1                  Node 2(old master)             Node3(new master)
dlm_purge_lockres
send deref to N2

                        leave domain
                        migrate lockres to N3
                                                       finish migration
                                                       send do assert
                                                       master to N1

receive do assert msg
form N3, but can not
find lockres because
DROPPING_REF is set,
so the owner is still
N2.

                        receive deref from N1
                        and response -EINVAL
                        because lockres is migrated

BUG when receive -EINVAL
in dlm_drop_lockres_ref

Fixes: 842b90b624 ("ocfs2/dlm: return in progress if master can not clear the refmap bit right now")

Link: http://lkml.kernel.org/r/57845103.3070406@huawei.com
Signed-off-by: Jun Piao <piaojun@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: Jiufei Xue <xuejiufei@huawei.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02 17:31:41 -04:00
..
cluster Merge branch 'akpm' (patches from Andrew) 2016-07-26 19:55:54 -07:00
dlm ocfs2/dlm: solve a BUG when deref failed in dlm_drop_lockres_ref 2016-08-02 17:31:41 -04:00
dlmfs mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
acl.c ocfs2: fix posix_acl_create deadlock 2016-05-12 15:52:50 -07:00
acl.h ocfs2: fix posix_acl_create deadlock 2016-05-12 15:52:50 -07:00
alloc.c ocfs2: retry on ENOSPC if sufficient space in truncate log 2016-08-02 17:31:41 -04:00
alloc.h ocfs2: retry on ENOSPC if sufficient space in truncate log 2016-08-02 17:31:41 -04:00
aops.c ocfs2: retry on ENOSPC if sufficient space in truncate log 2016-08-02 17:31:41 -04:00
aops.h ocfs2: fix ip_unaligned_aio deadlock with dio work queue 2016-03-25 16:37:42 -07:00
blockcheck.c
blockcheck.h
buffer_head_io.c Merge branch 'for-4.8/core' of git://git.kernel.dk/linux-block 2016-07-26 15:03:07 -07:00
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 wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
dir.h VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15 15:06:57 -04:00
dlmglue.c ocfs2: remove obscure BUG_ON in dlmglue 2016-07-26 16:19:19 -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 ocfs2: neaten do_error, ocfs2_error and ocfs2_abort 2015-09-04 16:54:41 -07:00
extent_map.h
file.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-05-17 11:01:31 -07:00
file.h ocfs2: prepare some interfaces used in append direct io 2015-02-16 17:56:04 -08:00
filecheck.c ocfs2: sysfile interfaces for online file check 2016-03-22 15:36:02 -07:00
filecheck.h ocfs2: sysfile interfaces for online file check 2016-03-22 15:36:02 -07:00
heartbeat.c
heartbeat.h
inode.c ocfs2: fix improper handling of return errno 2016-05-26 15:35:44 -07:00
inode.h ocfs2: cleanup implemented prototypes 2016-07-26 16:19:19 -07:00
ioctl.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
ioctl.h
journal.c ocfs2: improve recovery performance 2016-07-26 16:19:19 -07:00
journal.h jbd2: add support for avoiding data writes during transaction commits 2016-04-24 00:56:07 -04:00
Kconfig
localalloc.c ocfs2: fix occurring deadlock by changing ocfs2_wq from global to local 2016-03-25 16:37:42 -07:00
localalloc.h
locks.c ocfs2: fix flock panic issue 2015-12-29 17:45:49 -08:00
locks.h
Makefile ocfs2: disable BUG assertions in reading blocks 2016-06-24 17:23:52 -07:00
mmap.c mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
mmap.h
move_extents.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
move_extents.h
namei.c ocfs2: fix posix_acl_create deadlock 2016-05-12 15:52:50 -07:00
namei.h ocfs2: do not include dio entry in case of orphan scan 2015-11-05 19:34:48 -08:00
ocfs1_fs_compat.h
ocfs2_fs.h ocfs2: fix comment in struct ocfs2_extended_slot 2016-05-19 19:12:14 -07:00
ocfs2_ioctl.h
ocfs2_lockid.h
ocfs2_lockingver.h
ocfs2_trace.h ocfs2: code clean up for direct io 2016-03-25 16:37:42 -07:00
ocfs2.h mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros 2016-04-04 10:41:08 -07:00
quota_global.c quota: use time64_t internally 2016-06-19 18:09:31 +02:00
quota_local.c ocfs2: neaten do_error, ocfs2_error and ocfs2_abort 2015-09-04 16:54:41 -07:00
quota.h quota: constify qtree_fmt_operations structures 2016-01-04 10:58:35 +01:00
refcounttree.c ocfs2: fix posix_acl_create deadlock 2016-05-12 15:52:50 -07:00
refcounttree.h
reservations.c ocfs2: make resv_lock spinlock static 2015-02-10 14:30:29 -08:00
reservations.h
resize.c ocfs2: solve a problem of crossing the boundary in updating backups 2016-03-25 16:37:42 -07:00
resize.h
slot_map.c ocfs2: clean up an unneeded goto in ocfs2_put_slot() 2016-05-19 19:12:14 -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: ensure that dlm lockspace is created by kernel module 2016-08-02 17:31:41 -04:00
stackglue.c ocfs2: fix a redundant re-initialization 2016-07-26 16:19:19 -07:00
stackglue.h ocfs2: export ocfs2_kset for online file check 2016-03-22 15:36:02 -07:00
suballoc.c ocfs2: retry on ENOSPC if sufficient space in truncate log 2016-08-02 17:31:41 -04:00
suballoc.h
super.c Merge branch 'akpm' (patches from Andrew) 2016-07-26 19:55:54 -07:00
super.h ocfs2: fix occurring deadlock by changing ocfs2_wq from global to local 2016-03-25 16:37:42 -07:00
symlink.c switch ->get_link() to delayed_call, kill ->put_link() 2015-12-30 13:01:03 -05:00
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/jikos/trivial 2016-07-28 14:22:25 -07:00
xattr.h ocfs2: fix posix_acl_create deadlock 2016-05-12 15:52:50 -07:00