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 ca81d0d..20c5fa8 100644 (file)
--- 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)) {