Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932135AbWHJUOf (ORCPT ); Thu, 10 Aug 2006 16:14:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751546AbWHJUOV (ORCPT ); Thu, 10 Aug 2006 16:14:21 -0400 Received: from srv5.dvmed.net ([207.36.208.214]:42627 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S1750922AbWHJUNh (ORCPT ); Thu, 10 Aug 2006 16:13:37 -0400 Message-ID: <44DB936D.2080909@garzik.org> Date: Thu, 10 Aug 2006 16:13:33 -0400 From: Jeff Garzik User-Agent: Thunderbird 1.5.0.4 (X11/20060614) MIME-Version: 1.0 To: Badari Pulavarty CC: Andrew Morton , cmm@us.ibm.com, linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH 1/5] Forking ext4 filesystem from ext3 filesystem References: <1155172622.3161.73.camel@localhost.localdomain> <20060809233914.35ab8792.akpm@osdl.org> <44DB8036.5020706@us.ibm.com> In-Reply-To: <44DB8036.5020706@us.ibm.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -4.3 (----) X-Spam-Report: SpamAssassin version 3.1.3 on srv5.dvmed.net summary: Content analysis details: (-4.3 points, 5.0 required) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 893 Lines: 27 Badari Pulavarty wrote: > Andrew Morton wrote: >> Also, JBD is presently feeding into submit_bh() buffer_heads which >> span two >> machine pages, and some device drivers spit the dummy. It'd be better to >> fix that once, rather than twice.. > Andrew, > > I looked at this few days ago. I am not sure how we end up having > multiple pages (especially, > why we end up having buffers with bh_size > pagesize) ? Do you know why ? > > Easiest fix would be to fix submit_bh() to deal with multiple vecs - > which is vetoed by > Jens and I agree with him :( Yep. The sooner we kill buffer heads and use submit_bio(), the better :) Jeff - 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/