From: Li Zefan <lizefan@huawei.com>
Date: Fri, 28 Mar 2014 07:18:27 +0000 (+0800)
Subject: cgroup: fix spurious lockdep warning in cgroup_exit()
X-Git-Tag: v3.15-rc1~109^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8604cb43690b781f9a7ad4a770f3e10259fe939;p=pandora-kernel.git

cgroup: fix spurious lockdep warning in cgroup_exit()

cgroup_exit() is called in fork and exit path. If it's called in the
failure path during fork, PF_EXITING isn't set, and then lockdep will
complain.

Fix this by removing cgroup_exit() in that failure path. cgroup_fork()
does nothing that needs cleanup.

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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