[PATCH] mm/compaction.c: avoid double mem_cgroup_del_lru()

[Minchan Kim]

del_page_from_lru_list() already called mem_cgroup_del_lru().  So we must
not call it again. It adds unnecessary overhead.

Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Acked-by: Balbir Singh <balbir@xxxxxxxxxxxxxxxxxx>
Acked-by: Mel Gorman <mel@xxxxxxxxx>
Reviewed-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Signed-off-by: Minchan Kim <minchan.kim@xxxxxxxxx>
---
 mm/compaction.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/mm/compaction.c b/mm/compaction.c
index 50b0a90..b0fbfdf 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -302,7 +302,6 @@ static unsigned long isolate_migratepages(struct zone *zone,
 		/* Successfully isolated */
 		del_page_from_lru_list(zone, page, page_lru(page));
 		list_add(&page->lru, migratelist);
-		mem_cgroup_del_lru(page);
 		cc->nr_migratepages++;
 		nr_isolated++;
 
-- 
1.7.0.4


-- 
Kind regards,
Minchan Kim
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/