Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756717AbZKSOs7 (ORCPT ); Thu, 19 Nov 2009 09:48:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755721AbZKSOs6 (ORCPT ); Thu, 19 Nov 2009 09:48:58 -0500 Received: from cavan.codon.org.uk ([93.93.128.6]:53397 "EHLO cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753226AbZKSOs6 (ORCPT ); Thu, 19 Nov 2009 09:48:58 -0500 Date: Thu, 19 Nov 2009 14:48:53 +0000 From: Matthew Garrett To: Kay Sievers Cc: David Zeuthen , linux-kernel@vger.kernel.org, axboe@kernel.dk, linux-hotplug@vger.kernel.org Subject: Re: [PATCH] [RFC] Add support for uevents on block device idle changes Message-ID: <20091119144853.GA1398@srcf.ucam.org> References: <20091118200712.GA14026@srcf.ucam.org> <20091118213355.GA16630@srcf.ucam.org> <20091119130107.GB20949@srcf.ucam.org> <20091119141634.GA311@srcf.ucam.org> <20091119143008.GA719@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1041 Lines: 22 On Thu, Nov 19, 2009 at 03:34:53PM +0100, Kay Sievers wrote: > Single-subscriber event interfaces are usually a no-go for generic > infrastructure like this. We still have the unmodified HAL running > until it is dead, and this works only because there are no such > awkward interfaces. In a few years we will probably have diskfoo > replacing dk-disks, and then ... :) If you've got any ideas for what a multi-subscriber interface would look like, I'm happy look at it. I don't think there's an especially compelling use-case for one right now so I'm not enthusiastic about the additional complexity that'd be required, but as long as there's basic agreement that it's not practical to do this in userspace then we're at least on the same page. -- Matthew Garrett | mjg59@srcf.ucam.org -- 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/