linux-kernel - [PATCH 2/2] cgroup: remove synchronize_rcu() from rebind

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Message-ID: <50F3CEC2.1020909@huawei.com>
Date:	Mon, 14 Jan 2013 17:24:18 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Colin Cross <ccross@...gle.com>, Mike Galbraith <efault@....de>,
	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>
Subject: [PATCH 2/2] 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@...wei.com>
---
 kernel/cgroup.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 67b0fa0..f43c929 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;
 }
-- 
1.8.0.2

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