Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754887Ab0GEJpV (ORCPT ); Mon, 5 Jul 2010 05:45:21 -0400 Received: from one.firstfloor.org ([213.235.205.2]:51741 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754586Ab0GEJpU (ORCPT ); Mon, 5 Jul 2010 05:45:20 -0400 Date: Mon, 5 Jul 2010 11:45:17 +0200 From: Andi Kleen To: Naoya Horiguchi Cc: Andi Kleen , Andrew Morton , Mel Gorman , Wu Fengguang , "Jun'ichi Nomura" , linux-mm , LKML Subject: Re: [PATCH 5/7] hugetlb: pin oldpage in page migration Message-ID: <20100705094517.GB8510@basil.fritz.box> References: <1278049646-29769-1-git-send-email-n-horiguchi@ah.jp.nec.com> <1278049646-29769-6-git-send-email-n-horiguchi@ah.jp.nec.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1278049646-29769-6-git-send-email-n-horiguchi@ah.jp.nec.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 529 Lines: 12 On Fri, Jul 02, 2010 at 02:47:24PM +0900, Naoya Horiguchi wrote: > This patch introduces pinning the old page during page migration > to avoid freeing it before we complete copying. > This race condition can happen for privately mapped or anonymous hugepage. Patch looks good. -Andi -- 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/