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    Subject[PART4 Patch 0/2] memory-hotplug: allow online/offline memory to result movable node
    From: Lai Jiangshan <>

    This patch is part4 of the following patchset:

    Part1 is here:

    Part2 is here:

    Part3 is here:

    You must apply part1-3 before applying this patchset.

    we need a node which only contains movable memory. This feature is very
    important for node hotplug. If a node has normal/highmem, the memory
    may be used by the kernel and can't be offlined. If the node only contains
    movable memory, we can offline the memory and the node.

    Lai Jiangshan (2):
    numa: add CONFIG_MOVABLE_NODE for movable-dedicated node
    memory_hotplug: allow online/offline memory to result movable node

    drivers/base/node.c | 6 ++++++
    include/linux/nodemask.h | 4 ++++
    mm/Kconfig | 8 ++++++++
    mm/memory_hotplug.c | 16 ++++++++++++++++
    mm/page_alloc.c | 3 +++
    5 files changed, 37 insertions(+)


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