[PATCH] compaction: Remove mem_cgroup_del_lru

[Minchan Kim <minchan.kim@gmail.com>]

del_page_from_lru_list alreay called mem_cgroup_del_lru.
So we need to call it again. It makes wrong stat of memcg and
even happen VM_BUG_ON hit.

Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Minchan Kim <minchan.kim@gmail.com>
---
 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

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