From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with SMTP id 2553D6B0062 for ; Thu, 14 May 2009 15:56:45 -0400 (EDT) Received: from localhost (smtp.ultrahosting.com [127.0.0.1]) by smtp.ultrahosting.com (Postfix) with ESMTP id A63D282C2E4 for ; Thu, 14 May 2009 16:10:24 -0400 (EDT) Received: from smtp.ultrahosting.com ([74.213.175.254]) by localhost (smtp.ultrahosting.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id R2ZsYjXeENWm for ; Thu, 14 May 2009 16:10:24 -0400 (EDT) Received: from qirst.com (unknown [74.213.171.31]) by smtp.ultrahosting.com (Postfix) with ESMTP id EDCE682C31A for ; Thu, 14 May 2009 16:10:19 -0400 (EDT) Date: Thu, 14 May 2009 15:57:32 -0400 (EDT) From: Christoph Lameter Subject: Re: [PATCH 2/4] vmscan: drop PF_SWAPWRITE from zone_reclaim In-Reply-To: <20090513120627.587F.A69D9226@jp.fujitsu.com> Message-ID: References: <20090513120155.5879.A69D9226@jp.fujitsu.com> <20090513120627.587F.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: KOSAKI Motohiro Cc: LKML , linux-mm , Andrew Morton , Rik van Riel List-ID: On Wed, 13 May 2009, KOSAKI Motohiro wrote: > Subject: [PATCH] vmscan: drop PF_SWAPWRITE from zone_reclaim > > PF_SWAPWRITE mean ignore write congestion. (see may_write_to_queue()) > > foreground reclaim shouldn't ignore it because to write congested device cause > large IO lantency. > it isn't better than remote node allocation. Zone reclaim by default does not perform writes. RECLAIM_WRITE must be set for that to be effective. Acked-by: Christoph Lameter -- 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