linux-kernel - [PATCH 4/8] memcg: convert to use cgroup_from

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Date:	Mon, 8 Apr 2013 16:21:29 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Tejun Heo <tj@...nel.org>, Glauber Costa <glommer@...allels.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>, <linux-mm@...ck.org>
Subject: [PATCH 4/8] memcg: convert to use cgroup_from_id()

This is a preparation to kill css_id.

Signed-off-by: Li Zefan <lizefan@...wei.com>
---
 mm/memcontrol.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 14f1375..3561d0b 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2769,15 +2769,15 @@ static void __mem_cgroup_cancel_local_charge(struct mem_cgroup *memcg,
  */
 static struct mem_cgroup *mem_cgroup_lookup(unsigned short id)
 {
-	struct cgroup_subsys_state *css;
+	struct cgroup *cgrp;
 
 	/* ID 0 is unused ID */
 	if (!id)
 		return NULL;
-	css = css_lookup(&mem_cgroup_subsys, id);
-	if (!css)
+	cgrp = cgroup_from_id(&mem_cgroup_subsys, id);
+	if (!cgrp)
 		return NULL;
-	return mem_cgroup_from_css(css);
+	return mem_cgroup_from_cont(cgrp);
 }
 
 struct mem_cgroup *try_get_mem_cgroup_from_page(struct page *page)
-- 
1.8.0.2

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