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cgroup: fix locking in cgroupstats_build()
authorLi Zefan <lizefan@huawei.com>
Fri, 14 Feb 2014 08:54:28 +0000 (16:54 +0800)
committerTejun Heo <tj@kernel.org>
Fri, 14 Feb 2014 15:52:39 +0000 (10:52 -0500)
commitbad34660344f37db8b55ce8bc139bddc7d83af1b
tree21fbb75b3761a8f9c6d902780209089d6f059fb4
parent430af8ad9dad82d775d688155e1db1da385d3e7a
cgroup: fix locking in cgroupstats_build()

css_set_lock has been converted to css_set_rwsem, and rwsem can't nest
inside rcu_read_lock.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
kernel/cgroup.c