From: Li Zefan <lizefan@huawei.com>
Date: Thu, 24 Jan 2013 06:43:51 +0000 (+0800)
Subject: cgroup: remove a NULL check in cgroup_exit()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b5d646f5d5a135064232ff3a140a47a5b84bc911;p=linux-beck.git

cgroup: remove a NULL check in cgroup_exit()

init_task.cgroups is initialized at boot phase, and whenver a ask
is forked, it's cgroups pointer is inherited from its parent, and
it's never set to NULL afterwards.

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 ad3359f903f0..8da9048078c5 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4994,8 +4994,7 @@ void cgroup_exit(struct task_struct *tsk, int run_callbacks)
 	}
 	task_unlock(tsk);
 
-	if (cg)
-		put_css_set_taskexit(cg);
+	put_css_set_taskexit(cg);
 }
 
 /**