From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264610AbTGHQmR (ORCPT ); Tue, 8 Jul 2003 12:42:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264911AbTGHQmR (ORCPT ); Tue, 8 Jul 2003 12:42:17 -0400 Received: from pc2-cwma1-4-cust86.swan.cable.ntl.com ([213.105.254.86]:38317 "EHLO lxorguk.ukuu.org.uk") by vger.kernel.org with ESMTP id S264610AbTGHQmP (ORCPT ); Tue, 8 Jul 2003 12:42:15 -0400 Subject: Re: [PATCH] Fastwalk: reduce cacheline bouncing of d_count (Changelog@1.1024.1.11) From: Alan Cox To: herbert@13thfloor.at Cc: trond.myklebust@fys.uio.no, Marcelo Tosatti , hannal@us.ibm.com, Linux Kernel Mailing List , Linux FSdevel In-Reply-To: <20030708164426.GB10004@www.13thfloor.at> 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> <20030708164426.GB10004@www.13thfloor.at> Content-Type: text/plain Content-Transfer-Encoding: 7bit Organization: Message-Id: <1057683213.5228.3.camel@dhcp22.swansea.linux.org.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5) Date: 08 Jul 2003 17:53:34 +0100 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Maw, 2003-07-08 at 17:44, Herbert Poetzl wrote: > > Its no big problem to me since I can just back it out of -ac > > just curious, because I use this patch since early 2.4.20, > are there any reasons to 'back it out of -ac' for you? > > anyway I totally agree that the NFS issue pointed out by > Trond should be addressed ... Its high risk, its got bugs as Trond already showed and it only helps performance on giant SMP boxes. Its all risk and no reward. Quota updates get you working 32bit uid quota and the interactivity stuff helps all even tho its got some risk.