diff options
| author |   Joseph Qi <joseph.qi@huawei.com> | 2014-09-25 16:05:16 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2014-09-26 08:10:34 -0700 |
| commit | 5760a97c7143c208fa3a8f8cad0ed7dd672ebd28 (patch) | |
| tree | 5fa9d3345390c8d86f7768ee6d04d2520d4c28f5 /fs/proc/task_mmu.c | |
| parent | nilfs2: fix data loss with mmap() (diff) | |
| download | linux-dev-5760a97c7143c208fa3a8f8cad0ed7dd672ebd28.tar.xz linux-dev-5760a97c7143c208fa3a8f8cad0ed7dd672ebd28.zip | |
ocfs2/dlm: do not get resource spinlock if lockres is new
There is a deadlock case which reported by Guozhonghua:
https://oss.oracle.com/pipermail/ocfs2-devel/2014-September/010079.html
This case is caused by &res->spinlock and &dlm->master_lock
misordering in different threads.
It was introduced by commit 8d400b81cc83 ("ocfs2/dlm: Clean up refmap
helpers"). Since lockres is new, it doesn't not require the
&res->spinlock. So remove it.
Fixes: 8d400b81cc83 ("ocfs2/dlm: Clean up refmap helpers")
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reviewed-by: joyce.xue <xuejiufei@huawei.com>
Reported-by: Guozhonghua <guozhonghua@h3c.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc/task_mmu.c')
0 files changed, 0 insertions, 0 deletions