From: Ying Han <yinghan@google.com>
Date: Wed, 20 Feb 2013 02:14:04 +0000 (+1100)
Subject: mmotm: memcgvmscan-do-not-break-out-targeted-reclaim-without-reclaimed-pages.patch fix
X-Git-Tag: next-20130220~1^2~576
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=7086e163bf7e0d3ce1cb62c085f44f21a772d478;p=karo-tx-linux.git

mmotm: memcgvmscan-do-not-break-out-targeted-reclaim-without-reclaimed-pages.patch fix

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@google.com>
Cc: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/vmscan.c b/mm/vmscan.c
index ff869d2db8cd..15644f00343b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1983,7 +1983,7 @@ 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;
 			}