Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756074AbXJ1XnT (ORCPT ); Sun, 28 Oct 2007 19:43:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753825AbXJ1XnF (ORCPT ); Sun, 28 Oct 2007 19:43:05 -0400 Received: from outpipe-village-512-1.bc.nu ([81.2.110.250]:52559 "EHLO the-village.bc.nu" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753312AbXJ1XnD (ORCPT ); Sun, 28 Oct 2007 19:43:03 -0400 Date: Sun, 28 Oct 2007 23:44:57 +0000 From: Alan Cox To: Matthew Wilcox Cc: "J. Bruce Fields" , Linus Torvalds , linux-kernel@vger.kernel.org, "George G. Davis" , Andrew Morton , linux-fsdevel@vger.kernel.org Subject: Re: [RFC, PATCH] locks: remove posix deadlock detection Message-ID: <20071028234457.0011d8b7@the-village.bc.nu> In-Reply-To: <20071028233814.GF32359@parisc-linux.org> References: <20071017185157.GC3785@mvista.com> <20071018185759.GU3785@mvista.com> <20071026170750.GC13033@fieldses.org> <20071026224707.GO13033@fieldses.org> <20071028173136.GA16905@fieldses.org> <20071028174321.GB16905@fieldses.org> <20071028182732.GK27248@parisc-linux.org> <20071028184052.49abd092@the-village.bc.nu> <20071028201101.GA32359@parisc-linux.org> <20071028213855.769741b6@the-village.bc.nu> <20071028233814.GF32359@parisc-linux.org> X-Mailer: Claws Mail 2.10.0 (GTK+ 2.10.14; i386-redhat-linux-gnu) Organization: Red Hat UK Cyf., Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 1TE, Y Deyrnas Gyfunol. Cofrestrwyd yng Nghymru a Lloegr o'r rhif cofrestru 3798903 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 Content-Length: 769 Lines: 19 On Sun, 28 Oct 2007 17:38:14 -0600 Matthew Wilcox wrote: > On Sun, Oct 28, 2007 at 09:38:55PM +0000, Alan Cox wrote: > > > It doesn't require the system to detect it, only mandate what to return > > > if it does detect it. > > > > We should be detecting at least the obvious case. > > What is the obvious case? A task that has never called clone()? Simple AB BA I would have thought obvious. Clone as has been said several times now is irrelevant as the standard is about *processes* [in the SuS sense] - 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/