From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756734Ab2DTRsW (ORCPT ); Fri, 20 Apr 2012 13:48:22 -0400 Received: from lulu.zabbo.net ([69.168.54.52]:43655 "EHLO lulu.zabbo.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753587Ab2DTRsU (ORCPT ); Fri, 20 Apr 2012 13:48:20 -0400 Message-ID: <4F91A161.4040005@zabbo.net> Date: Fri, 20 Apr 2012 13:48:17 -0400 From: Zach Brown User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20120329 Thunderbird/11.0.1 MIME-Version: 1.0 To: Jeff Moyer CC: Dave Kleikamp , "Maxim V. Patlasov" , "linux-fsdevel@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [RFC PATCH v2 15/21] loop: use aio to perform io on the underlying file References: <1333122228-13633-1-git-send-email-dave.kleikamp@oracle.com> <1333122228-13633-16-git-send-email-dave.kleikamp@oracle.com> <4F917751.9040600@parallels.com> <4F917C2F.4020805@oracle.com> <4F91862F.2030502@zabbo.net> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > Bypassing the page cache is different from bypassing the underlying > device's cache. O_DIRECT does not mean "straight to platter". Sure, sure, you and I know that. > They most certainly should be! Are they? I have my guess. - z