Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261333AbVBVXJg (ORCPT ); Tue, 22 Feb 2005 18:09:36 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261335AbVBVXJg (ORCPT ); Tue, 22 Feb 2005 18:09:36 -0500 Received: from mail.kroah.org ([69.55.234.183]:56709 "EHLO perch.kroah.org") by vger.kernel.org with ESMTP id S261333AbVBVXJR (ORCPT ); Tue, 22 Feb 2005 18:09:17 -0500 Date: Tue, 22 Feb 2005 15:08:52 -0800 From: Greg KH To: Linus Torvalds Cc: Benjamin Herrenschmidt , Olof Johansson , Kernel Mailing List , Andrew Morton , jamie@shareable.org, Rusty Russell , David Howells Subject: Re: [PATCH/RFC] Futex mmap_sem deadlock Message-ID: <20050222230852.GA10067@kroah.com> References: <20050222190646.GA7079@austin.ibm.com> <1109106969.5412.138.camel@gaston> <1109108532.5411.149.camel@gaston> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.8i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 857 Lines: 20 On Tue, Feb 22, 2005 at 02:10:58PM -0800, Linus Torvalds wrote: > > Oh, well. The reason I hate the rwsem behaviour is exactly because it > results in this very subtle class of deadlocks. This one case is certainly > solvable several ways, but do we have other issues somewhere else? Things > like kobject might be ripe with things like this. The mm semaphore tends > to be pretty well-behaved - and I'm not sure the same is true of the > kobject one. I'm trying to get rid of the kobject (actually the subsystem) rwsem right now, so it should be gone completly within a few kernel versions. thanks, greg k-h - 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/