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    Subject[PATCH 55 of 66] select CONFIG_COMPACTION if TRANSPARENT_HUGEPAGE enabled
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    From: Andrea Arcangeli <aarcange@redhat.com>

    With transparent hugepage support we need compaction for the "defrag" sysfs
    controls to be effective.

    Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
    ---

    diff --git a/mm/Kconfig b/mm/Kconfig
    --- a/mm/Kconfig
    +++ b/mm/Kconfig
    @@ -305,6 +305,7 @@ config NOMMU_INITIAL_TRIM_EXCESS
    config TRANSPARENT_HUGEPAGE
    bool "Transparent Hugepage Support"
    depends on X86 && MMU
    + select COMPACTION
    help
    Transparent Hugepages allows the kernel to use huge pages and
    huge tlb transparently to the applications whenever possible.

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