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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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