From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267540AbTGHTPT (ORCPT ); Tue, 8 Jul 2003 15:15:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267556AbTGHTNG (ORCPT ); Tue, 8 Jul 2003 15:13:06 -0400 Received: from perninha.conectiva.com.br ([200.250.58.156]:39336 "EHLO perninha.conectiva.com.br") by vger.kernel.org with ESMTP id S267537AbTGHTMt (ORCPT ); Tue, 8 Jul 2003 15:12:49 -0400 Date: Tue, 8 Jul 2003 16:24:54 -0300 (BRT) From: Marcelo Tosatti X-X-Sender: marcelo@freak.distro.conectiva To: Alan Cox Cc: trond.myklebust@fys.uio.no, hannal@us.ibm.com, Linux Kernel Mailing List , Linux FSdevel Subject: RE: [PATCH] Fastwalk: reduce cacheline bouncing of d_count (Changelog@1.1024.1.11) In-Reply-To: <1057677613.4358.33.camel@dhcp22.swansea.linux.org.uk> Message-ID: References: <16138.53118.777914.828030@charged.uio.no> <1057673804.4357.27.camel@dhcp22.swansea.linux.org.uk> <16138.56467.342593.715679@charged.uio.no> <1057677613.4358.33.camel@dhcp22.swansea.linux.org.uk> 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 On Tue, 8 Jul 2003, Alan Cox wrote: > On Maw, 2003-07-08 at 16:00, Trond Myklebust wrote: > > ...but I do agree with your comment. The patch I meant to refer to > > (see revised title) does not appear in the 2.5.x tree either. > > > > Have we BTW been shown any numbers that support the alleged benefits? > > I may have missed those... > > A while ago yes - on very big SMP boxes. > > Its no big problem to me since I can just back it out of -ac Alan, I included fastwalk patch because I thought it was a stable and very useful optimisation. Even for 2.4. (I was expecting comments/flames on it when I first included it. Now if you think it is a 2.5 thing and can cause any potential problem for 2.4 I will remove it.