From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262492AbULCUQr (ORCPT ); Fri, 3 Dec 2004 15:16:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262496AbULCUQb (ORCPT ); Fri, 3 Dec 2004 15:16:31 -0500 Received: from mx1.redhat.com ([66.187.233.31]:64479 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S262492AbULCUNe (ORCPT ); Fri, 3 Dec 2004 15:13:34 -0500 Date: Fri, 3 Dec 2004 20:12:48 +0000 From: Alasdair G Kergon To: Nigel Cunningham Cc: Alasdair G Kergon , Pavel Machek , Linux Kernel Mailing List , dm-devel@redhat.com Subject: Re: Suspend 2 merge: 50/51: Device mapper support. Message-ID: <20041203201248.GU24229@agk.surrey.redhat.com> Mail-Followup-To: Nigel Cunningham , Alasdair G Kergon , Pavel Machek , Linux Kernel Mailing List , dm-devel@redhat.com References: <1101292194.5805.180.camel@desktop.cunninghams> <1101300802.5805.398.camel@desktop.cunninghams> <20041125235829.GJ2909@elf.ucw.cz> <1101427667.27250.175.camel@desktop.cunninghams> <20041202204042.GD24233@agk.surrey.redhat.com> <1102021461.13302.40.camel@desktop.cunninghams> <20041202214932.GE24233@agk.surrey.redhat.com> <1102025297.13302.51.camel@desktop.cunninghams> <20041203174749.GF24233@agk.surrey.redhat.com> <1102103827.22511.10.camel@desktop.cunninghams> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1102103827.22511.10.camel@desktop.cunninghams> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org [Quick commment only - travelling] On Sat, Dec 04, 2004 at 06:57:07AM +1100, Nigel Cunningham wrote: > If, therefore, we we're using DM crypt to do our > I/O, it will help if we can either get it to allocate the memory it will > need prior to us preparing the metadata, or get from it an amount of > memory to include in the pool, given the maximum amount of I/O we intend > to have on the fly at once. But where does dm-crypt use dm-io? dm_get_pages is used by snapshots, mirrors etc. Alasdair -- agk@redhat.com