linux-kernel - [PATCH] ns_cgroup: remove unused spinlock

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Message-ID: <49263214.5080604@cn.fujitsu.com>
Date:	Fri, 21 Nov 2008 11:59:16 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Paul Menage <menage@...gle.com>,
	"Serge E. Hallyn" <serue@...ibm.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux Containers <containers@...ts.linux-foundation.org>
Subject: [PATCH] ns_cgroup: remove unused spinlock

I happened to find the spinlock in struct ns_cgroup is never
used.

Signed-off-by: Li Zefan <lizf@...fujitsu.com>
---
 kernel/ns_cgroup.c |    2 --
 1 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/kernel/ns_cgroup.c b/kernel/ns_cgroup.c
index 43c2111..78bc3fd 100644
--- a/kernel/ns_cgroup.c
+++ b/kernel/ns_cgroup.c
@@ -13,7 +13,6 @@
 
 struct ns_cgroup {
 	struct cgroup_subsys_state css;
-	spinlock_t lock;
 };
 
 struct cgroup_subsys ns_subsys;
@@ -84,7 +83,6 @@ static struct cgroup_subsys_state *ns_create(struct cgroup_subsys *ss,
 	ns_cgroup = kzalloc(sizeof(*ns_cgroup), GFP_KERNEL);
 	if (!ns_cgroup)
 		return ERR_PTR(-ENOMEM);
-	spin_lock_init(&ns_cgroup->lock);
 	return &ns_cgroup->css;
 }
 
-- 
1.5.4.rc3

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