From: Li Zefan <lizf@cn.fujitsu.com>
Date: Thu, 29 Jan 2009 22:25:21 +0000 (-0800)
Subject: cgroups: fix lock inconsistency in cgroup_clone()
X-Git-Tag: v2.6.29-rc4~113
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1404f06565ee89e0ce04d4a5859c00b0e3a0dc8d;p=pandora-kernel.git

cgroups: fix lock inconsistency in cgroup_clone()

I fixed a bug in cgroup_clone() in Linus' tree in commit 7b574b7
("cgroups: fix a race between cgroup_clone and umount") without noticing
there was a cleanup patch in -mm tree that should be rebased (now commit
104cbd5, "cgroups: use task_lock() for access tsk->cgroups safe in
cgroup_clone()"), thus resulted in lock inconsistency.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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