From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266171AbUFZS2W (ORCPT ); Sat, 26 Jun 2004 14:28:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266256AbUFZS2W (ORCPT ); Sat, 26 Jun 2004 14:28:22 -0400 Received: from twilight.ucw.cz ([81.30.235.3]:45441 "EHLO midnight.ucw.cz") by vger.kernel.org with ESMTP id S266171AbUFZS2V (ORCPT ); Sat, 26 Jun 2004 14:28:21 -0400 Date: Sat, 26 Jun 2004 20:28:20 +0200 From: Vojtech Pavlik To: Linus Torvalds Cc: James Bottomley , Andrew Morton , Paul Jackson , PARISC list , Linux Kernel Subject: Re: [PATCH] Fix the cpumask rewrite Message-ID: <20040626182820.GA3723@ucw.cz> References: <1088266111.1943.15.camel@mulgrave> <1088268405.1942.25.camel@mulgrave> <1088270298.1942.40.camel@mulgrave> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jun 26, 2004 at 11:01:14AM -0700, Linus Torvalds wrote: > Final note: I might be willing to just change the rules, if people can > show that no paths that might need the volatile behaviour exist any more. > They definitely used to exist, though, and that's a BIG decision to make. At least input pretty much relies on the fact that bitops don't need locking and act as memory barriers. -- Vojtech Pavlik SuSE Labs, SuSE CR