Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757034AbZJSRBh (ORCPT ); Mon, 19 Oct 2009 13:01:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756089AbZJSRBg (ORCPT ); Mon, 19 Oct 2009 13:01:36 -0400 Received: from bombadil.infradead.org ([18.85.46.34]:58141 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755519AbZJSRBf (ORCPT ); Mon, 19 Oct 2009 13:01:35 -0400 Date: Mon, 19 Oct 2009 13:01:15 -0400 From: Christoph Hellwig To: Chris Mason , Mel Gorman , Frans Pop , David Rientjes , KOSAKI Motohiro , "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Pekka Enberg , Reinette Chatre , Bartlomiej Zolnierkiewicz , Karol Lewandowski , Mohamed Abbas , Jens Axboe , "John W. Linville" , linux-mm@kvack.org Subject: Re: [Bug #14141] order 2 page allocation failures in iwlagn Message-ID: <20091019170115.GA4593@infradead.org> References: <3onW63eFtRF.A.xXH.oMTxKB@chimera> <20091014103002.GA5027@csn.ul.ie> <200910141510.11059.elendil@planet.nl> <200910190133.33183.elendil@planet.nl> <20091019140151.GC9036@csn.ul.ie> <20091019161815.GA11487@think> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20091019161815.GA11487@think> User-Agent: Mutt/1.5.19 (2009-01-05) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 783 Lines: 16 On Tue, Oct 20, 2009 at 01:18:15AM +0900, Chris Mason wrote: > Waiting doesn't make it synchronous from the elevator point of view ;) > If you're using WB_SYNC_NONE, it's a async write. WB_SYNC_ALL makes it > a sync write. I only see WB_SYNC_NONE in vmscan.c, so we should be > using the async congestion wait. (the exception is xfs which always > does async writes). That's only because those people who did the global sweep did not bother to convert it or even tell the list about it. I have a patch in my QA queue to change it.. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/