From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx191.postini.com [74.125.245.191]) by kanga.kvack.org (Postfix) with SMTP id 3ABD36B005A for ; Sun, 22 Jul 2012 20:47:48 -0400 (EDT) From: Minchan Kim Subject: [RESEND RFC 0/3] memory-hotplug: handle page race between allocation and isolation Date: Mon, 23 Jul 2012 09:47:59 +0900 Message-Id: <1343004482-6916-1-git-send-email-minchan@kernel.org> Sender: owner-linux-mm@kvack.org List-ID: To: Kamezawa Hiroyuki , Mel Gorman Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton , KOSAKI Motohiro , Hugh Dickins , lliubbo@gmail.com, Minchan Kim 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org