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@xxxxxxxxxx> > CC: Jiang Liu <liuj97@xxxxxxxxx> > CC: Len Brown <len.brown@xxxxxxxxx> > CC: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> > CC: Paul Mackerras <paulus@xxxxxxxxx> > CC: Christoph Lameter <cl@xxxxxxxxx> > Cc: Minchan Kim <minchan.kim@xxxxxxxxx> > CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> > CC: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> > CC: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx> > CC: Rafael J. Wysocki <rjw@xxxxxxx> > CC: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> > Signed-off-by: Wen Congyang <wency@xxxxxxxxxxxxxx> Thanks for the update. It looks good. Reviewed-by: Toshi Kani <toshi.kani@xxxxxx> -Toshi -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>