From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 8 Aug 2001 10:49:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 8 Aug 2001 10:49:27 -0400 Received: from chunnel.redhat.com ([199.183.24.220]:55542 "EHLO dukat.scot.redhat.com") by vger.kernel.org with ESMTP id ; Wed, 8 Aug 2001 10:49:17 -0400 Date: Wed, 8 Aug 2001 15:49:15 +0100 From: "Stephen C. Tweedie" To: Daniel Phillips Cc: "Stephen C. Tweedie" , Anton Altaparmakov , Chris Mason , linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [RFC] using writepage to start io Message-ID: <20010808154915.V4036@redhat.com> In-Reply-To: <01080623182601.01864@starship> <01080715292606.02365@starship> <20010807152318.H4036@redhat.com> <01080717512607.02365@starship> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <01080717512607.02365@starship>; from phillips@bonn-fries.net on Tue, Aug 07, 2001 at 05:51:26PM +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Tue, Aug 07, 2001 at 05:51:26PM +0200, Daniel Phillips wrote: > On Tuesday 07 August 2001 16:23, Stephen C. Tweedie wrote: > > On Tue, Aug 07, 2001 at 03:29:26PM +0200, Daniel Phillips wrote: > > > Ext3 has its own writeback daemon > > > > Ext3 has a daemon to schedule commits to the journal, but it uses the > > normal IO scheduler for unforced writebacks. > Yes. The currently favored journalling mode uses a writeback journal, > no? It's lazy commit, but that's not really writeback --- when you're journaling, you write once to the journal, then after commit you write again to primary storage. The commit is lazy, sure, but it's not doing the writeback. Cheers, Stephen