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    Subject[RFC PATCH 0/3 V1 resend] mm: add new migrate type and online_movable for hotplug
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    This patchset adds a stable-movable-migrate-type for memory-management,
    It is used for anti-fragmentation(hugepage, big-order allocation...),
    hot-removal-of-memory(virtualization, power-conserve, move memory between systems
    to make better utilities of memories).

    it likes ZONE_MOVABLE, but it is more flexible.

    o The 1st patch fixes the allocation of CMA and do prepares
    for movable-like types.

    o The 2nd patch add a new migrate type which stands for the movable types
    which pages will not be changed to the other type.

    I chose the name MIGRATE_HOTREMOVE from MIGRATE_HOTREMOVE
    and MIGRATE_MOVABLE_STABLE, it just because the first usecase of
    this new type is for hotremove.

    o The 3th path introduces online_movable. When a memoryblock is onlined
    by "online_movable", the kernel will not have directly reference to
    the page of the memoryblock, thus we can remove that memory any time
    when needed.

    Different from ZONE_MOVABLE: it can be used for any given memroyblock.
    it can be set after boot(ZONE_MOVABLE zones are configured when booting)

    Lai Jiangshan (3):
    use __rmqueue_smallest when borrow memory from MIGRATE_CMA
    add MIGRATE_HOTREMOVE type
    add online_movable

    arch/tile/mm/init.c | 2 +-
    drivers/acpi/acpi_memhotplug.c | 3 +-
    drivers/base/memory.c | 24 +++++++----
    include/linux/memory.h | 1 +
    include/linux/memory_hotplug.h | 4 +-
    include/linux/mmzone.h | 37 +++++++++++++++++
    include/linux/page-isolation.h | 2 +-
    mm/compaction.c | 6 +-
    mm/memory-failure.c | 8 +++-
    mm/memory_hotplug.c | 36 +++++++++++++---
    mm/page_alloc.c | 86 ++++++++++++++++-----------------------
    mm/vmstat.c | 3 +
    12 files changed, 136 insertions(+), 76 deletions(-)

    --
    1.7.4.4



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