From 57fce0a68e3aa71d223d9023aae66c7393970c34 Mon Sep 17 00:00:00 2001
From: Tejun Heo <tj@kernel.org>
Date: Thu, 13 Feb 2014 06:58:41 -0500
Subject: [PATCH] cpuset: don't use cgroup_taskset_cur_css()

cgroup_taskset_cur_css() will be removed during the planned
resturcturing of migration path.  The only use of
cgroup_taskset_cur_css() is finding out the old cgroup_subsys_state of
the leader in cpuset_attach().  This usage can easily be removed by
remembering the old value from cpuset_can_attach().

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