linux-kernel - [PATCH 6/21] inactive_anon_is

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Message-Id: <20081203135431.a2acb02f.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 3 Dec 2008 13:54:31 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.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>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH  6/21] inactive_anon_is_low-move-to-vmscan.patch

The inactive_anon_is_low() is called only vmscan.
Then it can move to vmscan.c

This patch doesn't have any functional change.

Reviewd-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Acked-by: Rik van Riel <riel@...hat.com>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Index: mmotm-2.6.28-Dec02/include/linux/mm_inline.h
===================================================================
--- mmotm-2.6.28-Dec02.orig/include/linux/mm_inline.h
+++ mmotm-2.6.28-Dec02/include/linux/mm_inline.h
@@ -81,23 +81,4 @@ static inline enum lru_list page_lru(str
 	return lru;
 }
 
-/**
- * inactive_anon_is_low - check if anonymous pages need to be deactivated
- * @zone: zone to check
- *
- * Returns true if the zone does not have enough inactive anon pages,
- * meaning some active anon pages need to be deactivated.
- */
-static inline int inactive_anon_is_low(struct zone *zone)
-{
-	unsigned long active, inactive;
-
-	active = zone_page_state(zone, NR_ACTIVE_ANON);
-	inactive = zone_page_state(zone, NR_INACTIVE_ANON);
-
-	if (inactive * zone->inactive_ratio < active)
-		return 1;
-
-	return 0;
-}
 #endif
Index: mmotm-2.6.28-Dec02/mm/vmscan.c
===================================================================
--- mmotm-2.6.28-Dec02.orig/mm/vmscan.c
+++ mmotm-2.6.28-Dec02/mm/vmscan.c
@@ -1345,6 +1345,26 @@ static void shrink_active_list(unsigned 
 	pagevec_release(&pvec);
 }
 
+/**
+ * inactive_anon_is_low - check if anonymous pages need to be deactivated
+ * @zone: zone to check
+ *
+ * Returns true if the zone does not have enough inactive anon pages,
+ * meaning some active anon pages need to be deactivated.
+ */
+static int inactive_anon_is_low(struct zone *zone)
+{
+	unsigned long active, inactive;
+
+	active = zone_page_state(zone, NR_ACTIVE_ANON);
+	inactive = zone_page_state(zone, NR_INACTIVE_ANON);
+
+	if (inactive * zone->inactive_ratio < active)
+		return 1;
+
+	return 0;
+}
+
 static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan,
 	struct zone *zone, struct scan_control *sc, int priority)
 {

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