From: Li Zefan <lizefan@huawei.com>
Date: Wed, 17 Sep 2014 10:18:34 +0000 (+0800)
Subject: cgroup: remove redundant code in cgroup_rmdir()
X-Git-Tag: firefly_0821_release~176^2~3097^2~10
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=244bb9a6336d2aa53526261ec35c593ebd5c1a33;p=firefly-linux-kernel-4.4.55.git

cgroup: remove redundant code in cgroup_rmdir()

We no longer clear kn->priv in cgroup_rmdir(), so we don't need
to get an extra refcnt.

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

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 619aae399a3a..d739a732edb9 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4841,13 +4841,10 @@ static int cgroup_rmdir(struct kernfs_node *kn)
 	cgrp = cgroup_kn_lock_live(kn);
 	if (!cgrp)
 		return 0;
-	cgroup_get(cgrp);	/* for @kn->priv clearing */
 
 	ret = cgroup_destroy_locked(cgrp);
 
 	cgroup_kn_unlock(kn);
-
-	cgroup_put(cgrp);
 	return ret;
 }