Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752298Ab0HQNrk (ORCPT ); Tue, 17 Aug 2010 09:47:40 -0400 Received: from mx1.redhat.com ([209.132.183.28]:25729 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750837Ab0HQNri (ORCPT ); Tue, 17 Aug 2010 09:47:38 -0400 From: Jeff Moyer To: Naoya Horiguchi Cc: Christoph Lameter , Andi Kleen , Andrew Morton , Mel Gorman , Wu Fengguang , "Jun'ichi Nomura" , linux-mm , LKML , Andrea Arcangeli Subject: Re: [RFC] [PATCH 2/4] dio: add page locking for direct I/O References: <1281432464-14833-1-git-send-email-n-horiguchi@ah.jp.nec.com> <20100812075323.GA6112@spritzera.linux.bs1.fc.nec.co.jp> <20100812075941.GD6112@spritzera.linux.bs1.fc.nec.co.jp> <20100816020737.GA19531@spritzera.linux.bs1.fc.nec.co.jp> <20100817081753.GA28762@spritzera.linux.bs1.fc.nec.co.jp> X-PGP-KeyID: 1F78E1B4 X-PGP-CertKey: F6FE 280D 8293 F72C 65FD 5A58 1FF8 A7CA 1F78 E1B4 X-PCLoadLetter: What the f**k does that mean? Date: Tue, 17 Aug 2010 09:46:56 -0400 In-Reply-To: <20100817081753.GA28762@spritzera.linux.bs1.fc.nec.co.jp> (Naoya Horiguchi's message of "Tue, 17 Aug 2010 17:17:53 +0900") Message-ID: User-Agent: Gnus/5.110011 (No Gnus v0.11) Emacs/23.1 (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: 611 Lines: 16 Naoya Horiguchi writes: > BTW, from the discussion with Christoph I noticed my misunderstanding > about the necessity of additional page locking. It would seem that > without page locking there is no danger of racing between direct I/O and > page migration. So I retract this additional locking patch-set. OK, great! ;-) Cheers, Jeff -- 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/