tree 6789f2b7310d828496358ccdac93b68d2abda415
parent bd8815a6d802fc16a7a106e170593aa05dc17e72
author Tejun Heo <tj@kernel.org> 1376406113 -0400
committer Tejun Heo <tj@kernel.org> 1376406113 -0400

cgroup: always use cgroup_css()

cgroup_css() is the accessor for cgroup->subsys[] but is not used
consistently.  cgroup->subsys[] will become RCU protected and
cgroup_css() will grow synchronization sanity checks.  In preparation,
make all cgroup->subsys[] dereferences use cgroup_css() consistently.

This patch doesn't introduce any functional difference.

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