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| author | Joseph Qi <joseph.qi@huawei.com> | 2014-09-25 16:05:16 -0700 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2014-11-05 20:27:46 +0000 |
| commit | 40d31c4997351e1c80e95eb961366c8842ab3fc1 (patch) | |
| tree | 523a73a61c011009d1ce75dcb446b2c12afc8e83 /mm | |
| parent | a428c0e1d7781192fe806246f29b4dbeaa2a7ce1 (diff) | |
| download | kernel_samsung_smdk4412-40d31c4997351e1c80e95eb961366c8842ab3fc1.zip kernel_samsung_smdk4412-40d31c4997351e1c80e95eb961366c8842ab3fc1.tar.gz kernel_samsung_smdk4412-40d31c4997351e1c80e95eb961366c8842ab3fc1.tar.bz2 | |
ocfs2/dlm: do not get resource spinlock if lockres is new
commit 5760a97c7143c208fa3a8f8cad0ed7dd672ebd28 upstream.
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>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions