ns_cgroup: remove unused spinlock
authorLi Zefan <lizf@cn.fujitsu.com>
Thu, 8 Jan 2009 02:07:34 +0000 (18:07 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 8 Jan 2009 16:31:02 +0000 (08:31 -0800)
I happened to find the spinlock in struct ns_cgroup is never used.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
kernel/ns_cgroup.c

index 43c2111cd54de719917c0cdc9ace9e92445f4513..78bc3fdac0d262f019d1c1c4caee95e9c26aa147 100644 (file)
@@ -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;
 }