Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S269311AbUI3QB0 (ORCPT ); Thu, 30 Sep 2004 12:01:26 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269312AbUI3QBZ (ORCPT ); Thu, 30 Sep 2004 12:01:25 -0400 Received: from dbl.q-ag.de ([213.172.117.3]:6621 "EHLO dbl.q-ag.de") by vger.kernel.org with ESMTP id S269311AbUI3QAv (ORCPT ); Thu, 30 Sep 2004 12:00:51 -0400 Message-ID: <415C2DA4.5080102@colorfullife.com> Date: Thu, 30 Sep 2004 18:00:36 +0200 From: Manfred Spraul User-Agent: Mozilla/5.0 (X11; U; Linux i686; fr-FR; rv:1.7.3) Gecko/20040922 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Stephen Tweedie CC: linux-kernel@vger.kernel.org Subject: Re: [Patch 0/10]: Cleanup online reservations for 2.6.9-rc2-mm4. Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 520 Lines: 17 sct wrote: >Locking >is minimised: the impact on the hot path consists of nothing more than >an smp_rmb() before we test sb->s_groups_count. That's a noop on x86, > No, wrong way around: wmb() is empty. rmb() is either lfence or a locked dummy instruction. -- Manfred - 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/