From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751560Ab3CWP4Z (ORCPT ); Sat, 23 Mar 2013 11:56:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:41424 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751286Ab3CWP4X (ORCPT ); Sat, 23 Mar 2013 11:56:23 -0400 Message-ID: <514DD065.3000106@redhat.com> Date: Sat, 23 Mar 2013 11:55:17 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Naoya Horiguchi CC: linux-mm@kvack.org, Andrew Morton , Mel Gorman , Hugh Dickins , KOSAKI Motohiro , Andi Kleen , Hillf Danton , Michal Hocko , linux-kernel@vger.kernel.org Subject: Re: [PATCH 01/10] migrate: add migrate_entry_wait_huge() References: <1363983835-20184-1-git-send-email-n-horiguchi@ah.jp.nec.com> <1363983835-20184-2-git-send-email-n-horiguchi@ah.jp.nec.com> In-Reply-To: <1363983835-20184-2-git-send-email-n-horiguchi@ah.jp.nec.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/22/2013 04:23 PM, Naoya Horiguchi wrote: > When we have a page fault for the address which is backed by a hugepage > under migration, the kernel can't wait correctly until the migration > finishes. This is because pte_offset_map_lock() can't get a correct > migration entry for hugepage. This patch adds migration_entry_wait_huge() > to separate code path between normal pages and hugepages. > > ChangeLog v2: > - remove dup in migrate_entry_wait_huge() > > Signed-off-by: Naoya Horiguchi Reviewed-by: Rik van Riel -- All rights reversed