linux-kernel - [PATCH] vmscan: Make move_active_pages_to

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Date:	Sun, 21 Nov 2010 23:24:56 +0900
From:	Minchan Kim <minchan.kim@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm <linux-mm@...ck.org>, LKML <linux-kernel@...r.kernel.org>,
	Minchan Kim <minchan.kim@...il.com>,
	Wu Fengguang <fengguang.wu@...el.com>,
	Rik van Riel <riel@...hat.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	Johannes Weiner <hannes@...xchg.org>
Subject: [PATCH] vmscan: Make move_active_pages_to_lru more generic

Now move_active_pages_to_lru can move pages into active or inactive.
if it moves the pages into inactive, it itself can clear PG_acive.
It makes the function more generic.

Signed-off-by: Minchan Kim <minchan.kim@...il.com>
Cc: Wu Fengguang <fengguang.wu@...el.com>
Cc: Rik van Riel <riel@...hat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc: Johannes Weiner <hannes@...xchg.org>

---
 mm/vmscan.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index aa4f1cb..bd408b3 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1457,6 +1457,10 @@ static void move_active_pages_to_lru(struct zone *zone,
 		VM_BUG_ON(PageLRU(page));
 		SetPageLRU(page);
 
+		/* we are de-activating */
+		if (!is_active_lru(lru))
+			ClearPageActive(page);
+
 		list_move(&page->lru, &zone->lru[lru].list);
 		mem_cgroup_add_lru_list(page, lru);
 		pgmoved++;
@@ -1543,7 +1547,6 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
 			}
 		}
 
-		ClearPageActive(page);  /* we are de-activating */
 		list_add(&page->lru, &l_inactive);
 	}
 
-- 
1.7.0.4

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