From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753114Ab1JJQv1 (ORCPT ); Mon, 10 Oct 2011 12:51:27 -0400 Received: from li9-11.members.linode.com ([67.18.176.11]:54943 "EHLO test.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752967Ab1JJQvZ (ORCPT ); Mon, 10 Oct 2011 12:51:25 -0400 Date: Mon, 10 Oct 2011 12:51:16 -0400 From: "Ted Ts'o" To: Shaohua Li Cc: Christoph Hellwig , Jens Axboe , Andrew Morton , lkml , linux-ext4@vger.kernel.org Subject: Re: [patch]ext4: add block plug for .writepages Message-ID: <20111010165116.GX7948@thunk.org> Mail-Followup-To: Ted Ts'o , Shaohua Li , Christoph Hellwig , Jens Axboe , Andrew Morton , lkml , linux-ext4@vger.kernel.org References: <1317004226.29510.172.camel@sli10-conroe> <20110926073025.GB21079@infradead.org> <1317022727.29510.175.camel@sli10-conroe> <20110926094554.GA30827@infradead.org> <1317179380.22361.8.camel@sli10-conroe> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1317179380.22361.8.camel@sli10-conroe> User-Agent: Mutt/1.5.20 (2009-06-14) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on test.thunk.org); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 28, 2011 at 11:09:40AM +0800, Shaohua Li wrote: > I searched a little bit, looks only ext4 need it. here is the patch. > > > Add block plug for ext4 .writepages. Though ext4 .writepages > already handles request merge very well, block plug is still > helpful to reduce block lock contention. > > Signed-off-by: Shaohua Li Thanks, applied. - Ted