]> git.baikalelectronics.ru Git - kernel.git/commit
ocfs2: skip locks in the blocked list
authorXue jiufei <xuejiufei@huawei.com>
Tue, 12 Nov 2013 23:06:59 +0000 (15:06 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Wed, 13 Nov 2013 03:09:01 +0000 (12:09 +0900)
commitaffe16ac5fab8cdf3b4803d1ce7cd9f19affa512
tree4d008503513bc83adc5e12a860e39336c454fa10
parent5fda4f2afa98b44d529812dec90fb4d066baa9aa
ocfs2: skip locks in the blocked list

A parallel umount on 4 nodes triggered a bug in
dlm_process_recovery_date().  Here's the situation:

Receiving MIG_LOCKRES message, A node processes the locks in migratable
lockres.  It copys lvb from migratable lockres when processing the first
valid lock.

If there is a lock in the blocked list with the EX level, it triggers the
BUG.  Since valid lvbs are set when locks are granted with EX or PR
levels, locks in the blocked list cannot have valid lvbs.  Therefore I
think we should skip the locks in the blocked list.

Signed-off-by: Xuejiufei <xuejiufei@huawei.com>
Signed-off-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
fs/ocfs2/dlm/dlmrecovery.c