From: alex chen <alex.chen@huawei.com>
Date: Thu, 9 Oct 2014 22:25:00 +0000 (-0700)
Subject: ocfs2/dlm: call dlm_lockres_put without resource spinlock
X-Git-Tag: fixes-against-v3.18-rc2~137^2~149
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a7e6b5a0ad1a554ca982c555a34ce8086d5b994;p=pandora-kernel.git

ocfs2/dlm: call dlm_lockres_put without resource spinlock

dlm_lockres_put() should be called without &res->spinlock, otherwise a
deadlock case may happen.

spin_lock(&res->spinlock)
...
dlm_lockres_put
  ->dlm_lockres_release
    ->dlm_print_one_lock_resource
      ->spin_lock(&res->spinlock)

Signed-off-by: Alex Chen <alex.chen@huawei.com>
Reviewed-by: Joseph Qi <joseph.qi@huawei.com>
Cc: Mark Fasheh <mfasheh@suse.com>
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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