From 3c04cf414edbc129fd70d55c553afa662fc5b530 Mon Sep 17 00:00:00 2001
From: Shaohua Li <shaohua.li@intel.com>
Date: Mon, 31 Oct 2011 17:07:03 -0700
Subject: [PATCH] --- yaml --- r: 272113 b: refs/heads/master c:
 3da367c3e5fca71d4e778fa565d9b098d5518f4a h: refs/heads/master i:   272111:
 2801ddf62657fff490df10c00f01206ff807457d v: v3

---
 [refs]            | 2 +-
 trunk/mm/vmscan.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index fb5206044acb..169cf245d6b6 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3fa36acbced23c563345de3179dfe1775f15be5e
+refs/heads/master: 3da367c3e5fca71d4e778fa565d9b098d5518f4a
diff --git a/trunk/mm/vmscan.c b/trunk/mm/vmscan.c
index b68a9342d5a3..b1520b077858 100644
--- a/trunk/mm/vmscan.c
+++ b/trunk/mm/vmscan.c
@@ -2005,12 +2005,14 @@ static void shrink_zone(int priority, struct zone *zone,
 	enum lru_list l;
 	unsigned long nr_reclaimed, nr_scanned;
 	unsigned long nr_to_reclaim = sc->nr_to_reclaim;
+	struct blk_plug plug;
 
 restart:
 	nr_reclaimed = 0;
 	nr_scanned = sc->nr_scanned;
 	get_scan_count(zone, sc, nr, priority);
 
+	blk_start_plug(&plug);
 	while (nr[LRU_INACTIVE_ANON] || nr[LRU_ACTIVE_FILE] ||
 					nr[LRU_INACTIVE_FILE]) {
 		for_each_evictable_lru(l) {
@@ -2034,6 +2036,7 @@ static void shrink_zone(int priority, struct zone *zone,
 		if (nr_reclaimed >= nr_to_reclaim && priority < DEF_PRIORITY)
 			break;
 	}
+	blk_finish_plug(&plug);
 	sc->nr_reclaimed += nr_reclaimed;
 
 	/*