linux-kernel - [PATCH] mm: memcg: remove checking reclaim order in soft limit reclaim

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Date:	Tue, 17 Jan 2012 20:47:59 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	linux-mm@...ck.org
Cc:	Michal Hocko <mhocko@...e.cz>,
	Johannes Weiner <hannes@...xchg.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Hillf Danton <dhillf@...il.com>
Subject: [PATCH] mm: memcg: remove checking reclaim order in soft limit reclaim

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@...il.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
--
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