From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Date: Tue, 22 Sep 2009 00:01:45 +0000 (-0700)
Subject: vmscan: kill unnecessary page flag test
X-Git-Tag: Ubuntu-5.0.0-8.9~26145
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=74a1c48fb4e9f10e3c83dcd39af73487968e35bf;p=mirror_ubuntu-disco-kernel.git

vmscan: 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@jp.fujitsu.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/vmscan.c b/mm/vmscan.c
index ca81d0d05c09..20c5fa8eca46 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1208,8 +1208,8 @@ static unsigned long shrink_inactive_list(unsigned long max_scan,
 			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)) {