linux-kernel - Re: [PATCH 0/3] memory_hotplug: fix memory hotplug bug

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Date:	Fri, 28 Sep 2012 08:39:23 +0800
From:	Ni zhan Chen <nizhan.chen@...il.com>
To:	Lai Jiangshan <laijs@...fujitsu.com>
CC:	linux-kernel@...r.kernel.org, Rob Landley <rob@...dley.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jiang Liu <jiang.liu@...wei.com>,
	Jianguo Wu <wujianguo@...wei.com>,
	Kay Sievers <kay.sievers@...y.org>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Xishi Qiu <qiuxishi@...wei.com>, Mel Gorman <mgorman@...e.de>,
	linux-doc@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 0/3] memory_hotplug: fix memory hotplug bug

On 09/27/2012 02:47 PM, Lai Jiangshan wrote:
> We found 3 bug while we test and develop memory hotplug.
>
> PATCH1~2: the old code does not handle node_states[N_NORMAL_MEMORY] correctly,
> it corrupts the memory.
>
> PATCH3: move the modification of zone_start_pfn into corresponding lock.

please fully test them before send out. thanks.

>
> CC: Rob Landley <rob@...dley.net>
> CC: Andrew Morton <akpm@...ux-foundation.org>
> CC: Jiang Liu <jiang.liu@...wei.com>
> CC: Jianguo Wu <wujianguo@...wei.com>
> CC: Kay Sievers <kay.sievers@...y.org>
> CC: Greg Kroah-Hartman <gregkh@...e.de>
> CC: Xishi Qiu <qiuxishi@...wei.com>
> CC: Mel Gorman <mgorman@...e.de>
> CC: linux-doc@...r.kernel.org
> CC: linux-kernel@...r.kernel.org
> CC: linux-mm@...ck.org
>
> Lai Jiangshan (3):
>    memory_hotplug: fix missing nodemask management
>    slub, hotplug: ignore unrelated node's hot-adding and hot-removing
>    memory,hotplug: Don't modify the zone_start_pfn outside of
>      zone_span_writelock()
>
>   Documentation/memory-hotplug.txt |    5 ++-
>   include/linux/memory.h           |    1 +
>   mm/memory_hotplug.c              |   96 +++++++++++++++++++++++++++++++-------
>   mm/page_alloc.c                  |    3 +-
>   mm/slub.c                        |    4 +-
>   5 files changed, 87 insertions(+), 22 deletions(-)
>

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