From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753039Ab1HBEip (ORCPT ); Tue, 2 Aug 2011 00:38:45 -0400 Received: from mga03.intel.com ([143.182.124.21]:35044 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750808Ab1HBEiQ (ORCPT ); Tue, 2 Aug 2011 00:38:16 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.67,305,1309762800"; d="scan'208";a="34097752" From: Andi Kleen To: linux-kernel@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, hch@infradead.org Subject: Updated direct IO optimization patchkit v2 Date: Mon, 1 Aug 2011 21:38:02 -0700 Message-Id: <1312259893-4548-1-git-send-email-andi@firstfloor.org> X-Mailer: git-send-email 1.7.4.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Various micro optimizations of the block direct IO path. This addresses all review comments and adds an additional prefetch optimization that gives another about 0.3% in a large macro benchmark. Overall the patchkit is worht about 2.2% in the same macro benchmark. I also ported it to current mainline, resolving some conflicts with hch's recent changes to direct-io. -Andi