From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda1.sgi.com [192.48.157.11]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p9A1btpM137662 for ; Sun, 9 Oct 2011 20:37:55 -0500 Received: from ipmail05.adl6.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id EDF59152E972 for ; Sun, 9 Oct 2011 18:45:00 -0700 (PDT) Received: from ipmail05.adl6.internode.on.net (ipmail05.adl6.internode.on.net [150.101.137.143]) by cuda.sgi.com with ESMTP id wzk2qwqBvewz4k5d for ; Sun, 09 Oct 2011 18:45:00 -0700 (PDT) Date: Mon, 10 Oct 2011 12:37:49 +1100 From: Dave Chinner Subject: Re: [PATCH 1/4] xfs: do not update xa_last_pushed_lsn for locked items Message-ID: <20111010013749.GR3159@dastard> References: <20111006183257.036884724@bombadil.infradead.org> <20111006183549.399127499@bombadil.infradead.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20111006183549.399127499@bombadil.infradead.org> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Christoph Hellwig Cc: Stefan Priebe , xfs@oss.sgi.com On Thu, Oct 06, 2011 at 02:32:58PM -0400, Christoph Hellwig wrote: > If an item was locked we should not update xa_last_pushed_lsn and thus skip > it when restarting the AIL scan as we need to be able to lock and write it > out as soon as possible. Otherwise heavy lock contention might starve AIL > pushing too easily, especially given the larger backoff once we moved > xa_last_pushed_lsn all the way to the target lsn. > > Signed-off-by: Christoph Hellwig > Reported-by: Stefan Priebe > Tested-by: Stefan Priebe Reviewed-by: Dave Chinner -- Dave Chinner david@fromorbit.com _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs