Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265570AbTIDVuL (ORCPT ); Thu, 4 Sep 2003 17:50:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265578AbTIDVuL (ORCPT ); Thu, 4 Sep 2003 17:50:11 -0400 Received: from fw.osdl.org ([65.172.181.6]:35726 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S265570AbTIDVuG (ORCPT ); Thu, 4 Sep 2003 17:50:06 -0400 Date: Thu, 4 Sep 2003 14:49:51 -0700 (PDT) From: Linus Torvalds To: Jamie Lokier cc: Hugh Dickins , Rusty Russell , Andrew Morton , Ingo Molnar , Subject: Re: [PATCH] Alternate futex non-page-pinning and COW fix In-Reply-To: <20030904200426.GB31590@mail.jlokier.co.uk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 795 Lines: 24 On Thu, 4 Sep 2003, Jamie Lokier wrote: > > * A futex on a MAP_PRIVATE must be mm-local: the canonical > * example being MAP_PRIVATE of /dev/zero. Actually, /dev/zero is a special case in itself. It is an anonymous mapping, and is equivalent to MAP_ANON for private mappings. For MAP_SHARED it is something _totally_ different. So /dev/zero isn't even an interesting case. > Unfortunately I think the above 5 conditions do not have a consistent > solution. Please prove me wrong :) I don't think there is any inconsistency. Linus - 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/