From: Xue jiufei <xuejiufei@huawei.com>
Date: Mon, 23 Jun 2014 20:22:08 +0000 (-0700)
Subject: ocfs2/dlm: fix misuse of list_move_tail() in dlm_run_purge_list()
X-Git-Tag: omap-for-v3.16/fixes-rc4~63^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a270c6d3c0d7ba914bd82da34152d1102920d805;p=pandora-kernel.git

ocfs2/dlm: fix misuse of list_move_tail() in dlm_run_purge_list()

When a lockres in purge list but is still in use, it should be moved to
the tail of purge list.  dlm_thread will continue to check next lockres in
purge list.  However, code list_move_tail(&dlm->purge_list,
&lockres->purge) will do *no* movements, so dlm_thread will purge the same
lockres in this loop again and again.  If it is in use for a long time,
other lockres will not be processed.

Signed-off-by: Yiwen Jiang <jiangyiwen@huawei.com>
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>
---

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