From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933909AbYEGXLo (ORCPT ); Wed, 7 May 2008 19:11:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756536AbYEGXLa (ORCPT ); Wed, 7 May 2008 19:11:30 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:53974 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754331AbYEGXL1 (ORCPT ); Wed, 7 May 2008 19:11:27 -0400 Date: Wed, 7 May 2008 16:09:48 -0700 (PDT) From: Linus Torvalds To: Andrea Arcangeli cc: Andrew Morton , Christoph Lameter , Jack Steiner , Robin Holt , Nick Piggin , Peter Zijlstra , kvm-devel@lists.sourceforge.net, Kanoj Sarcar , Roland Dreier , Steve Wise , linux-kernel@vger.kernel.org, Avi Kivity , linux-mm@kvack.org, general@lists.openfabrics.org, Hugh Dickins , Rusty Russell , Anthony Liguori , Chris Wright , Marcelo Tosatti , Eric Dumazet , "Paul E. McKenney" Subject: Re: [PATCH 08 of 11] anon-vma-rwsem In-Reply-To: <20080507225801.GK8276@duo.random> Message-ID: References: <6b384bb988786aa78ef0.1210170958@duo.random> <20080507212650.GA8276@duo.random> <20080507222205.GC8276@duo.random> <20080507225801.GK8276@duo.random> User-Agent: Alpine 1.10 (LFD 962 2008-03-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 8 May 2008, Andrea Arcangeli wrote: > > mmu_notifier_register only runs when windows or linux or macosx > boots. Who could ever care of the msec spent in mm_lock compared to > the time it takes to linux to boot? Andrea, you're *this* close to going to my list of people who it is not worth reading email from, and where it's better for everybody involved if I just teach my spam-filter about it. That code was CRAP. That code was crap whether it's used once, or whether it's used a million times. Stop making excuses for it just because it's not performance- critical. So give it up already. I told you what the non-crap solution was. It's simpler, faster, and is about two lines of code compared to the crappy version (which was what - 200 lines of crap with a big comment on top of it just to explain the idiocy?). So until you can understand the better solution, don't even bother emailing me, ok? Because the next email I get from you that shows the intelligence level of a gnat, I'll just give up and put you in a spam-filter. Because my IQ goes down just from reading your mails. I can't afford to continue. Linus