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    Subject[PATCH 0/5] device-dax and huge-page dax fixes for 4.8-rc6
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    Kai and Toshi reported poor performance with huge-page dax mappings and
    while debugging a few more bugs were discovered in the device-dax driver
    and mm. The following fixes target 4.8-rc6 and are tagged for -stable:

    - device-dax incorrectly translates the file offset to a physical
    resource address

    - show_smap() crashes on huge-page dax mappings

    - huge-page dax mappings are inadvertently being marked as
    _PAGE_CACHE_MODE_UC instead of _PAGE_CACHE_MODE_WB

    I would like to take this set through nvdimm.git with acks from mm folks
    as there is 4.9 device-dax development that depends on these changes.

    ---

    Dan Williams (5):
    dax: fix mapping size check
    dax: fix offset to physical address translation
    mm: fix show_smap() for zone_device-pmd ranges
    mm: fix cache mode of dax pmd mappings
    mm: cleanup pfn_t usage in track_pfn_insert()


    arch/x86/mm/pat.c | 4 ++--
    drivers/dax/dax.c | 12 +++++++-----
    fs/proc/task_mmu.c | 2 ++
    include/asm-generic/pgtable.h | 4 ++--
    mm/huge_memory.c | 6 ++----
    mm/memory.c | 2 +-
    6 files changed, 16 insertions(+), 14 deletions(-)

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