Re: [Patch v5 2/7] acpi,memory-hotplug: deal with eject request in hotplug queue

[Toshi Kani <toshi.kani@hp.com>]

On Thu, 2012-11-15 at 14:59 +0800, Wen Congyang wrote:
> The memory device can be removed by 2 ways:
> 1. send eject request by SCI
> 2. echo 1 >/sys/bus/pci/devices/PNP0C80:XX/eject
> 
> We handle the 1st case in the module acpi_memhotplug, and handle
> the 2nd case in ACPI eject notification. This 2 events may happen
> at the same time, so we may touch acpi_memory_device.res_list at
> the same time. This patch reimplements memory-hotremove support
> through an ACPI eject notification. Now the memory device is
> offlined and hotremoved only in the function acpi_memory_device_remove()
> which is protected by device_lock().
> 
> CC: David Rientjes <rientjes@google.com>
> CC: Jiang Liu <liuj97@gmail.com>
> CC: Len Brown <len.brown@intel.com>
> CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> CC: Paul Mackerras <paulus@samba.org>
> CC: Christoph Lameter <cl@linux.com>
> Cc: Minchan Kim <minchan.kim@gmail.com>
> CC: Andrew Morton <akpm@linux-foundation.org>
> CC: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
> CC: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
> CC: Rafael J. Wysocki <rjw@sisk.pl>
> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
> Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>

Thanks for the update.  It looks good.

Reviewed-by: Toshi Kani <toshi.kani@hp.com>

-Toshi



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