[PATCH] mmotm:memcgvmscan-do-not-break-out-targeted-reclaim-without-reclaimed-pages.patchfix

[Ying Han]

We should break out of the hierarchy loop only if nr_reclaimed exceeded
nr_to_reclaim and not vice-versa. This patch fixes the condition.

Signed-off-by: Ying Han <yinghan@xxxxxxxxxx>
---
 mm/vmscan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index d75c1ec..7528eae 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1985,7 +1985,7 @@ static void shrink_zone(struct zone *zone, struct scan_control *sc)
 			 * whole hierarchy is not sufficient.
 			 */
 			if (!global_reclaim(sc) &&
-					sc->nr_to_reclaim >= sc->nr_reclaimed) {
+					sc->nr_to_reclaim <= sc->nr_reclaimed) {
 				mem_cgroup_iter_break(root, memcg);
 				break;
 			}
-- 
1.7.10.4

-- 
Michal Hocko
SUSE Labs
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