From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751494Ab2IEHYg (ORCPT ); Wed, 5 Sep 2012 03:24:36 -0400 Received: from LGEMRELSE6Q.lge.com ([156.147.1.121]:60124 "EHLO LGEMRELSE6Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750957Ab2IEHYe (ORCPT ); Wed, 5 Sep 2012 03:24:34 -0400 X-AuditID: 9c930179-b7cc4ae00000134d-1f-5046fe30557d From: Minchan Kim To: Andrew Morton Cc: Kamezawa Hiroyuki , Yasuaki Ishimatsu , Xishi Qiu , Mel Gorman , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Minchan Kim Subject: [PATCH 0/3] memory-hotplug: handle page race between allocation and isolation Date: Wed, 5 Sep 2012 16:25:59 +0900 Message-Id: <1346829962-31989-1-git-send-email-minchan@kernel.org> X-Mailer: git-send-email 1.7.9.5 X-Brightmail-Tracker: AAAAAA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Memory hotplug has a subtle race problem so this patchset fixes the problem (Look at [3/3] for detail and please confirm the problem before review other patches in this series.) [1/3] is just clean up and help for [2/3]. [2/3] keeps the migratetype information to freed page's index field and [3/3] uses the information. [3/3] fixes the race problem with [2/3]'s information. After applying [2/3], migratetype argument in __free_one_page and free_one_page is redundant so we can remove it but I decide to not touch them because it increases code size about 50 byte. Minchan Kim (3): mm: use get_page_migratetype instead of page_private mm: remain migratetype in freed page memory-hotplug: bug fix race between isolation and allocation include/linux/mm.h | 12 ++++++++++++ mm/page_alloc.c | 16 ++++++++++------ mm/page_isolation.c | 7 +++++-- 3 files changed, 27 insertions(+), 8 deletions(-) -- 1.7.9.5