From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262133AbTKGWxg (ORCPT ); Fri, 7 Nov 2003 17:53:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262152AbTKGWxc (ORCPT ); Fri, 7 Nov 2003 17:53:32 -0500 Received: from arnor.apana.org.au ([203.14.152.115]:19727 "EHLO arnor.me.apana.org.au") by vger.kernel.org with ESMTP id S262133AbTKGWxF (ORCPT ); Fri, 7 Nov 2003 17:53:05 -0500 Date: Sat, 8 Nov 2003 09:52:53 +1100 To: Jens Axboe Cc: Linux Kernel Mailing List Subject: Re: [BIO] Bounce queue in bio_add_page Message-ID: <20031107225253.GA8864@gondor.apana.org.au> References: <20031103205234.GA17570@gondor.apana.org.au> <20031104084929.GH1477@suse.de> <20031104090325.GA21301@gondor.apana.org.au> <20031104090353.GM1477@suse.de> <20031105094855.GD1477@suse.de> <20031106210900.GA29000@gondor.apana.org.au> <20031107112346.GA5153@gondor.apana.org.au> <20031107112555.GC591@suse.de> <20031107112833.GA5239@gondor.apana.org.au> <20031107113235.GD591@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031107113235.GD591@suse.de> User-Agent: Mutt/1.5.4i From: Herbert Xu Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Nov 07, 2003 at 12:32:35PM +0100, Jens Axboe wrote: > On Fri, Nov 07 2003, Herbert Xu wrote: > > On Fri, Nov 07, 2003 at 12:25:55PM +0100, Jens Axboe wrote: > > > > > > Could be related, someone is doing an unlock on an already unlocked > > > page. Is this the same system that saw the bounce problem initially? > > > > Yes, see http://bugs.debian.org/218566 for details. > > Then there's likely just some other bug wrt bouncing. Hmm, does this > work? It's OK, it turns out that he applied my earlier patch which called blk_queue_bounce() in blk_add_page. That obviously breaks down when the bio is bounced since the real end_io functions haven't been set yet. So this problem is resolved. Thanks, -- Debian GNU/Linux 3.0 is out! ( http://www.debian.org/ ) Email: Herbert Xu ~{PmV>HI~} Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt