Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754750AbYCQSgc (ORCPT ); Mon, 17 Mar 2008 14:36:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752180AbYCQSgZ (ORCPT ); Mon, 17 Mar 2008 14:36:25 -0400 Received: from fmmailgate02.web.de ([217.72.192.227]:44056 "EHLO fmmailgate02.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752016AbYCQSgY (ORCPT ); Mon, 17 Mar 2008 14:36:24 -0400 From: Chr To: Alasdair G Kergon Subject: Re: [dm-crypt] INFO: task mount:11202 blocked for more than 120 seconds Date: Mon, 17 Mar 2008 19:36:21 +0100 User-Agent: KMail/1.9.9 Cc: Christian Kujau , Milan Broz , David Chinner , LKML , xfs@oss.sgi.com, dm-devel@redhat.com, dm-crypt@saout.de, Herbert Xu , Ritesh Raj Sarraf References: <20080317173609.GD29322@agk.fab.redhat.com> In-Reply-To: <20080317173609.GD29322@agk.fab.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200803171936.22260.chunkeey@web.de> X-Provags-ID: V01U2FsdGVkX18cJGI+XRdX+YuIU5FAvCPjVe8Xl3Yg1+PDZzPF OEd6Yauoms+7GK4zd5tSCgq05DEMnCWcMlc0TOUwXlNCgOBbb3 dzcGhURUA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1257 Lines: 33 On Monday 17 March 2008 18:36:09 Alasdair G Kergon wrote: > Latest version for everyone to try: > > From: Milan Broz > > Fix regression in dm-crypt introduced in commit > 3a7f6c990ad04e6f576a159876c602d14d6f7fef > (dm crypt: use async crypto). > > If write requests need to be split into pieces, the code must not > process them in parallel because the crypto context cannot be shared. > So there can be parallel crypto operations on one part of the write, > but only one write bio can be processed at a time. > > This is not optimal and the workqueue code need to be optimized for > parallel processing, but for now it solves problem without affecting > the performance of synchronous crypto operation (most of current > dm-crypt users). > > Signed-off-by: Milan Broz > Signed-off-by: Alasdair G Kergon Tested-by: Christian Lamparter Well, the dm-crypt regressions seems to be gone. :) Thanks for your work & time! Regards, Christian -- 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/