linux-kernel - [BUGFIX][PATCH 1/5] memcg use correct scan number at reclaim

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Message-Id: <20090312095516.53a2d029.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 12 Mar 2009 09:55:16 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"balbir@...ux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	"nishimura@....nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"kosaki.motohiro@...fujitsu.com" <kosaki.motohiro@...fujitsu.com>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Subject: [BUGFIX][PATCH 1/5] memcg use correct scan number at reclaim

Andrew, this [1/5] is a bug fix, others are not.

==
From: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>

Even when page reclaim is under mem_cgroup, # of scan page is determined by
status of global LRU. Fix that.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
---
 mm/vmscan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: mmotm-2.6.29-Mar10/mm/vmscan.c
===================================================================
--- mmotm-2.6.29-Mar10.orig/mm/vmscan.c
+++ mmotm-2.6.29-Mar10/mm/vmscan.c
@@ -1470,7 +1470,7 @@ static void shrink_zone(int priority, st
 		int file = is_file_lru(l);
 		int scan;
 
-		scan = zone_page_state(zone, NR_LRU_BASE + l);
+		scan = zone_nr_pages(zone, sc, l);
 		if (priority) {
 			scan >>= priority;
 			scan = (scan * percent[file]) / 100;

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