linux-kernel - [PATCH 2/5] Kill unnecessary page flag test

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Message-Id: <20090716173741.9D4E.A69D9226@jp.fujitsu.com>
Date:	Thu, 16 Jul 2009 17:38:42 +0900 (JST)
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	kosaki.motohiro@...fujitsu.com, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH 2/5] Kill unnecessary page flag test

Subject: [PATCH] Kill unnecessary page flag test

The page_lru() already evaluate PageActive() and PageSwapBacked(). We
don't need to re-evaluate it.


Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
---
 mm/vmscan.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: b/mm/vmscan.c
===================================================================
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1160,8 +1160,8 @@ static unsigned long shrink_inactive_lis
 			SetPageLRU(page);
 			lru = page_lru(page);
 			add_page_to_lru_list(zone, page, lru);
-			if (PageActive(page)) {
-				int file = !!page_is_file_cache(page);
+			if (is_active_lru(lru)) {
+				int file = !!is_file_lru(lru);
 				reclaim_stat->recent_rotated[file]++;
 			}
 			if (!pagevec_add(&pvec, page)) {


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