Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754590Ab1BGS3d (ORCPT ); Mon, 7 Feb 2011 13:29:33 -0500 Received: from mx1.redhat.com ([209.132.183.28]:51669 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754572Ab1BGS3b (ORCPT ); Mon, 7 Feb 2011 13:29:31 -0500 Message-ID: <4D503A06.3010403@redhat.com> Date: Mon, 07 Feb 2011 19:29:26 +0100 From: Milan Broz User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101213 Thunderbird/3.1.7 MIME-Version: 1.0 To: "Ted Ts'o" , Matt , Linux Kernel , linux-ext4 Subject: Re: ext4: Fix data corruption with multi-block writepages support References: <20110207174552.GC3457@thunk.org> In-Reply-To: <20110207174552.GC3457@thunk.org> X-Enigmail-Version: 1.1.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1045 Lines: 27 On 02/07/2011 06:45 PM, Ted Ts'o wrote: > On Fri, Feb 04, 2011 at 10:40:47PM +0000, Matt wrote: >> >> So that means that the file-corruption which existed until 2.6.37-rc6 >> and got triggered (for me) more easily via "dm crypt: scale to >> multiple CPUs" >> is fixed now ? > > Well, a patch exists for it that will be merged into 2.6.38. > >> That should give ext4 a nice speedup for >=2.6.38 :) > > I'm not going to make it be the default for 2.6.38, since it's fairly > late in the -rc features. People who want it can explicitly enable it > using the mount option mblk_io_submit, though. (And let me know your > success stories! :-) I will be enabling it as the default in > 2.6.39-rc1. So it was ext4 only bug in ext4_end_bio(), dm-crypt per-cpu code was just trigger here, right? Milan -- 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/