From: Tejun Heo <tj@kernel.org>
Date: Tue, 13 May 2014 16:16:22 +0000 (-0400)
Subject: cgroup: remove cgroup->control_kn
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~81^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b7fc5ad235936379fae67a9f7b50bb53487a1a3a;p=pandora-kernel.git

cgroup: remove cgroup->control_kn

Now that cgroup_subtree_control_write() has access to the associated
kernfs_open_file and thus the kernfs_node, there's no need to cache it
in cgroup->control_kn on creation.  Remove cgroup->control_kn and use
@of->kn directly.

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