From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933012AbXDRIIp (ORCPT ); Wed, 18 Apr 2007 04:08:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933020AbXDRIIp (ORCPT ); Wed, 18 Apr 2007 04:08:45 -0400 Received: from mtagate3.de.ibm.com ([195.212.29.152]:57468 "EHLO mtagate3.de.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933012AbXDRIIo (ORCPT ); Wed, 18 Apr 2007 04:08:44 -0400 Date: Wed, 18 Apr 2007 10:11:17 +0200 From: Cornelia Huck To: Tejun Heo Cc: linux-kernel , Alan Stern , Greg K-H , Rusty Russell , dmitry.torokhov@gmail.com Subject: Re: [PATCH RFD] alternative kobject release wait mechanism Message-ID: <20070418101117.73edb302@gondolin.boeblingen.de.ibm.com> In-Reply-To: <4625169D.9020301@gmail.com> References: <20070416193619.4659a847@gondolin.boeblingen.de.ibm.com> <20070417184110.GJ10619@htj.dyndns.org> <4625169D.9020301@gmail.com> Organization: IBM Deutschland Entwicklung GmbH X-Mailer: Claws Mail 2.8.0 (GTK+ 2.8.20; i486-pc-linux-gnu) X-Legal: IBM Deutschland Entwicklung GmbH Vorsitzender des Aufsichtsrats: Johann Weihen =?ISO-8859-15?Q?Gesch=E4ftsf=FChrung:?= Herbert Kircher Sitz der Gesellschaft: =?ISO-8859-15?Q?B=F6blingen?= Registergericht: Amtsgericht Stuttgart, HRB 243294 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 18 Apr 2007 03:49:01 +0900, Tejun Heo wrote: > Oh, one more thing, with proper code audit, we can just make > device_unregister() do the waiting instead of adding separate > device_unregister_wait(). I think that will be a good step toward > immediate-detach driver model. Do we really want that? If the release function doesn't sit in the module, or if the device_unregister() is done for other reasons in a non-module, we don't care about lingering references. There's no need to wait (and possibly lock up) there.