From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756928Ab2IGAiB (ORCPT ); Thu, 6 Sep 2012 20:38:01 -0400 Received: from LGEMRELSE1Q.lge.com ([156.147.1.111]:48599 "EHLO LGEMRELSE1Q.lge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751154Ab2IGAiA (ORCPT ); Thu, 6 Sep 2012 20:38:00 -0400 X-AuditID: 9c93016f-b7cc0ae000000e9f-ce-504941e34b7a From: Minchan Kim To: Andrew Morton Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Mel Gorman , Kamezawa Hiroyuki , Yasuaki Ishimatsu , Xishi Qiu , Wen Congyang , Minchan Kim Subject: [PATCH v3 0/4] memory-hotplug: handle page race between allocation and isolation Date: Fri, 7 Sep 2012 09:39:28 +0900 Message-Id: <1346978372-17903-1-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.) [1/4] is just clean up and help for [2/4]. [2/4] keeps the migratetype information to freed page's index field and [3/4] uses the information. [3/4] fixes the race problem with [2/4]'s information. [4/4] enhance memory-hotremove operation success ratio After applying [2/4], 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. This patchset is based on mmotm-2012-09-06-16-46 Minchan Kim (4): use get_page_migratetype instead of page_private mm: remain migratetype in freed page memory-hotplug: bug fix race between isolation and allocation memory-hotplug: fix pages missed by race rather than failing include/linux/mm.h | 12 ++++++++++++ include/linux/page-isolation.h | 4 ++++ mm/page_alloc.c | 19 ++++++++++++------- mm/page_isolation.c | 18 ++++++++++++++++-- 4 files changed, 44 insertions(+), 9 deletions(-) -- 1.7.9.5