Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265468AbUABKJX (ORCPT ); Fri, 2 Jan 2004 05:09:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265473AbUABKJW (ORCPT ); Fri, 2 Jan 2004 05:09:22 -0500 Received: from ns.virtualhost.dk ([195.184.98.160]:50355 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S265468AbUABKJT (ORCPT ); Fri, 2 Jan 2004 05:09:19 -0500 Date: Fri, 2 Jan 2004 11:09:09 +0100 From: Jens Axboe To: Arjan van de Ven Cc: Peter Osterlund , Andrew Morton , packet-writing@suse.com, linux-kernel@vger.kernel.org Subject: Re: ext2 on a CD-RW Message-ID: <20040102100909.GG5523@suse.de> References: <20040101162427.4c6c020b.akpm@osdl.org> <1073034412.4429.1.camel@laptop.fenrus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1073034412.4429.1.camel@laptop.fenrus.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 956 Lines: 23 On Fri, Jan 02 2004, Arjan van de Ven wrote: > On Fri, 2004-01-02 at 02:30, Peter Osterlund wrote: > > > The packet writing code has the restriction that a bio must not span a > > packet boundary. (A packet is 32*2048 bytes.) If the page when mapped > > to disk starts 2kb before a packet boundary, merge_bvec_fn therefore > > returns 2048, which is less than len, which is 4096 if the whole page > > is mapped, so the bio_add_page() call fails. > > devicemapper has similar restrictions for raid0 format; in that case > it's device-mappers job to split the page/bio. Just as it is UDF's task > to do the same I suspect... It has nothing to do with UDF, it's a driver problem (API breakage). -- Jens Axboe - 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/