Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262460AbVD2IFH (ORCPT ); Fri, 29 Apr 2005 04:05:07 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262457AbVD2IFH (ORCPT ); Fri, 29 Apr 2005 04:05:07 -0400 Received: from smtp.istop.com ([66.11.167.126]:57037 "EHLO smtp.istop.com") by vger.kernel.org with ESMTP id S262460AbVD2IEr (ORCPT ); Fri, 29 Apr 2005 04:04:47 -0400 From: Daniel Phillips To: Lars Marowsky-Bree Subject: Re: [PATCH 1a/7] dlm: core locking Date: Fri, 29 Apr 2005 04:05:28 -0400 User-Agent: KMail/1.7 Cc: linux-kernel@vger.kernel.org References: <20050425165705.GA11938@redhat.com> <200504272241.04254.phillips@istop.com> <20050428122147.GO21645@marowsky-bree.de> In-Reply-To: <20050428122147.GO21645@marowsky-bree.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200504290405.29082.phillips@istop.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1519 Lines: 34 On Thursday 28 April 2005 08:21, Lars Marowsky-Bree wrote: > On 2005-04-27T22:41:04, Daniel Phillips wrote: > > > Just a couple comments here, more will come as time permits. I know you > > > consider cluster file systems to be "obscure" apps... > > > > Oh the contrary, cluster filesystems are the main focus of and reason for > > the current submission. > > He was actually quoting David. And indeed it is very important that the > DLM interfaces be generally useful, not just for a specific cluster > filesystem; if that was the goal, it would be an internal component only > and no need to expose it. True, sort of. Remember, the _only_ argument for (g)dlm being in-kernel is to tighten up the interface for filesystems. If (g)dlm could be trimmed down by supporting _only_ in-kernel filesystems, with a different, userspace lock manager for user space apps, well, that is a strategy that has to be considered. Taking part of (g)dlm out of kernel is also something that needs to be looked it. It is a little on the biggish side. Don't forget, (g)dlm is just a cluster service, and at present, a service that has exactly one user in the whole world: gfs. We'd like to attract more, but not at the cost of kernel bloat. Regards, Daniel - 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/