From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752030AbWHNPF0 (ORCPT ); Mon, 14 Aug 2006 11:05:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752022AbWHNPF0 (ORCPT ); Mon, 14 Aug 2006 11:05:26 -0400 Received: from mx2.redhat.com ([66.187.237.31]:44996 "EHLO mx2.redhat.com") by vger.kernel.org with ESMTP id S1751995AbWHNPFZ (ORCPT ); Mon, 14 Aug 2006 11:05:25 -0400 Date: Mon, 14 Aug 2006 16:05:09 +0100 From: Alasdair G Kergon To: Andrew Morton Cc: Daniel Kobras , dm-devel@redhat.com, linux-kernel@vger.kernel.org Subject: Re: [dm-devel] Re: [PATCH] dm: Fix deadlock under high i/o load in raid1 setup. Message-ID: <20060814150509.GO18633@agk.surrey.redhat.com> Mail-Followup-To: Andrew Morton , Daniel Kobras , dm-devel@redhat.com, linux-kernel@vger.kernel.org References: <20060809164421.GC9984@antares.tat.physik.uni-tuebingen.de> <20060812130228.f7954b5f.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060812130228.f7954b5f.akpm@osdl.org> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Aug 12, 2006 at 01:02:28PM -0700, Andrew Morton wrote: > Alasdair, I'd say that this is a 2.6.18 fix and a 2.6.17.x backport. Yes. > Or move the mempool_free()ing out of kmorrord context and into > IO-completion context, perhaps. That's how some other dm targets handle this particular problem. Alasdair -- agk@redhat.com