From: Li Zefan <lizefan@huawei.com>
Date: Tue, 18 Jun 2013 10:48:37 +0000 (+0800)
Subject: cgroup: convert cgroup_cft_commit() to use cgroup_for_each_descendant_pre()
X-Git-Tag: omap-for-v3.11/fixes-for-merge-window~44^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8c82d20a9f729cf4b9f73043f7fd4e0872bebfd;p=pandora-kernel.git

cgroup: convert cgroup_cft_commit() to use cgroup_for_each_descendant_pre()

We used root->allcg_list to iterate cgroup hierarchy because at that time
cgroup_for_each_descendant_pre() hasn't been invented.

tj: In cgroup_cfts_commit(), s/@serial_nr/@update_upto/, move the
    assignment right above releasing cgroup_mutex and explain what's
    going on there.

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