From: Li Zefan <lizefan@huawei.com>
Date: Mon, 14 Jan 2013 09:24:18 +0000 (+0800)
Subject: cgroup: remove synchronize_rcu() from rebind_subsystems()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=130e3695a3edf6bf21464f2826720a79a6afdee0;p=linux-beck.git

cgroup: remove synchronize_rcu() from rebind_subsystems()

Nothing's protected by RCU in rebind_subsystems(), and I can't think
of a reason why it is needed.

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

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index ce27351e9249..a893985601e9 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -1079,7 +1079,6 @@ static int rebind_subsystems(struct cgroupfs_root *root,
 		}
 	}
 	root->subsys_mask = root->actual_subsys_mask = final_subsys_mask;
-	synchronize_rcu();
 
 	return 0;
 }