Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759283AbYABQGs (ORCPT ); Wed, 2 Jan 2008 11:06:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755100AbYABQGk (ORCPT ); Wed, 2 Jan 2008 11:06:40 -0500 Received: from iolanthe.rowland.org ([192.131.102.54]:60263 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755008AbYABQGk (ORCPT ); Wed, 2 Jan 2008 11:06:40 -0500 Date: Wed, 2 Jan 2008 11:06:39 -0500 (EST) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Dave Young cc: Greg KH , Peter Zijlstra , , Subject: Re: [PATCH 01/12] Use mutex instead of semaphore in driver core In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 754 Lines: 22 On Wed, 2 Jan 2008, Dave Young wrote: > > Around a month ago I had a discussion with Peter Zijlstra about the > > problems in converting the device semaphores to mutexes; you may be > > able to find it in the LKML archives. Doing the conversion while > > keeping lockdep happy is a very hard problem and we were not able to > > solve it. > > > > It's unfortunate to know this, I will search and read your thread. Here's a pointer to that thread: http://marc.info/?t=119411942200002&r=1&w=2 Alan Stern -- 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/