Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263651AbTHZGMG (ORCPT ); Tue, 26 Aug 2003 02:12:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263644AbTHZGMF (ORCPT ); Tue, 26 Aug 2003 02:12:05 -0400 Received: from fw.osdl.org ([65.172.181.6]:44688 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S263638AbTHZGME (ORCPT ); Tue, 26 Aug 2003 02:12:04 -0400 Date: Mon, 25 Aug 2003 23:14:49 -0700 From: Andrew Morton To: Ingo Molnar Cc: rusty@rustcorp.com.au, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/2] Futex non-page-pinning fix Message-Id: <20030825231449.7de28ba6.akpm@osdl.org> In-Reply-To: References: <20030825225011.2ad47c85.akpm@osdl.org> X-Mailer: Sylpheed version 0.9.4 (GTK+ 1.2.10; i686-pc-linux-gnu) 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: 709 Lines: 17 Ingo Molnar wrote: > > The > kernel doesnt in fact know about the first use of a futex: no-contention > futexes have zero kernel footprint. This is the big plus of them. So i'd > really favor some sort of hashing method and no limits, that way the Linux > VM is extended and every VM address is waitable and wakable on - a pretty > powerful concept. What about the option of not pinning the pages at all: just fault them in when required? - 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/