Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755068AbZJGUfE (ORCPT ); Wed, 7 Oct 2009 16:35:04 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754232AbZJGUfE (ORCPT ); Wed, 7 Oct 2009 16:35:04 -0400 Received: from one.firstfloor.org ([213.235.205.2]:53130 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753827AbZJGUfC (ORCPT ); Wed, 7 Oct 2009 16:35:02 -0400 To: Linus Torvalds Cc: Nick Piggin , Jens Axboe , Linux Kernel Mailing List , linux-fsdevel@vger.kernel.org, Ravikiran G Thirumalai , Peter Zijlstra Subject: Re: [rfc][patch] store-free path walking From: Andi Kleen References: <20091006064919.GB30316@wotan.suse.de> <20091006101414.GM5216@kernel.dk> <20091006122623.GE30316@wotan.suse.de> <20091006124941.GS5216@kernel.dk> <20091007085849.GN30316@wotan.suse.de> <20091007164622.GX30316@wotan.suse.de> Date: Wed, 07 Oct 2009 22:34:24 +0200 In-Reply-To: (Linus Torvalds's message of "Wed, 7 Oct 2009 12:25:03 -0700 (PDT)") Message-ID: <87eipfymcv.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (gnu/linux) 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 Content-Length: 628 Lines: 17 Linus Torvalds writes: > > Sad. But we do have the added requirement that we want to keep the > commonly used fields together in the same cacheline, so maybe it's > unavoidable. With some strategic prefetches it might be cheap enough to use two cache lines. Just fetch it with the other. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/