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

[Ni zhan Chen]

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@xxxxxxxxxxx>
> CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> CC: Jiang Liu <jiang.liu@xxxxxxxxxx>
> CC: Jianguo Wu <wujianguo@xxxxxxxxxx>
> CC: Kay Sievers <kay.sievers@xxxxxxxx>
> CC: Greg Kroah-Hartman <gregkh@xxxxxxx>
> CC: Xishi Qiu <qiuxishi@xxxxxxxxxx>
> CC: Mel Gorman <mgorman@xxxxxxx>
> CC: linux-doc@xxxxxxxxxxxxxxx
> CC: linux-kernel@xxxxxxxxxxxxxxx
> CC: linux-mm@xxxxxxxxx
>
> 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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