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Date: Tue, 17 Jan 2012 20:47:59 +0800
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Subject: [PATCH] mm: memcg: remove checking reclaim order in soft limit reclaim
From: Hillf Danton <dhillf@gmail.com>
To: linux-mm@kvack.org
Cc: Michal Hocko <mhocko@suse.cz>, Johannes Weiner <hannes@cmpxchg.org>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Hugh Dickins <hughd@google.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        LKML <linux-kernel@vger.kernel.org>, Hillf Danton <dhillf@gmail.com>
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If async order-O reclaim expected here, it is settled down when setting up scan
control, with scan priority hacked to be zero. Other than that, deny of reclaim
should be removed.


Signed-off-by: Hillf Danton <dhillf@gmail.com>
---

--- a/mm/memcontrol.c	Tue Jan 17 20:41:36 2012
+++ b/mm/memcontrol.c	Tue Jan 17 20:47:48 2012
@@ -3512,9 +3512,6 @@ unsigned long mem_cgroup_soft_limit_recl
 	unsigned long long excess;
 	unsigned long nr_scanned;

-	if (order > 0)
-		return 0;
-
 	mctz = soft_limit_tree_node_zone(zone_to_nid(zone), zone_idx(zone));
 	/*
 	 * This loop can run a while, specially if mem_cgroup's continuously