From: Tejun Heo <tj@kernel.org>
Date: Tue, 13 May 2014 16:11:00 +0000 (-0400)
Subject: cgroup: use restart_syscall() for retries after offline waits in cgroup_subtree_contr... 
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~81^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d331fa985d3a39d5b8cb60caf016d3e53e57c91;p=pandora-kernel.git

cgroup: use restart_syscall() for retries after offline waits in cgroup_subtree_control_write()

After waiting for a child to finish offline,
cgroup_subtree_control_write() jumps up to retry from after the input
parsing and active protection breaking.  This retry makes the
scheduled locking update - removal of cgroup_tree_mutex - more
difficult.  Let's simplify it by returning with restart_syscall() for
retries.

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

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