From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id EB959600921 for ; Fri, 16 Jul 2010 06:26:16 -0400 (EDT) Date: Fri, 16 Jul 2010 11:25:58 +0100 From: Mel Gorman Subject: Re: [PATCH 1/7] memcg: sc.nr_to_reclaim should be initialized Message-ID: <20100716102557.GE13117@csn.ul.ie> References: <20100716191006.7369.A69D9226@jp.fujitsu.com> <20100716191256.736C.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-15 Content-Disposition: inline In-Reply-To: <20100716191256.736C.A69D9226@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org To: KOSAKI Motohiro Cc: LKML , linux-mm , Andrew Morton , KAMEZAWA Hiroyuki , Nishimura Daisuke List-ID: On Fri, Jul 16, 2010 at 07:13:31PM +0900, KOSAKI Motohiro wrote: > Currently, mem_cgroup_shrink_node_zone() initialize sc.nr_to_reclaim as 0. > It mean shrink_zone() only scan 32 pages and immediately return even if > it doesn't reclaim any pages. > Do you mean it immediately returns once one page is reclaimed? i.e. this check if (nr_reclaimed >= nr_to_reclaim && priority < DEF_PRIORITY) break; > This patch fixes it. > Otherwise it seems ok. It's unrelated to trace points though so should be submitted on its own. > Signed-off-by: KOSAKI Motohiro Acked-by: Mel Gorman > --- > mm/vmscan.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/mm/vmscan.c b/mm/vmscan.c > index 1691ad0..bd1d035 100644 > --- a/mm/vmscan.c > +++ b/mm/vmscan.c > @@ -1932,6 +1932,7 @@ unsigned long mem_cgroup_shrink_node_zone(struct mem_cgroup *mem, > struct zone *zone, int nid) > { > struct scan_control sc = { > + .nr_to_reclaim = SWAP_CLUSTER_MAX, > .may_writepage = !laptop_mode, > .may_unmap = 1, > .may_swap = !noswap, > -- > 1.6.5.2 > > > -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org