HugeTLB migration support for PPC64

Changes from V1:
* Added Reviewed-by:
* Drop follow_huge_addr from powerpc

Aneesh Kumar K.V (8):
  mm/hugetlb/migration: Use set_huge_pte_at instead of set_pte_at
  mm/follow_page_mask: Split follow_page_mask to smaller functions.
  mm/hugetlb: export hugetlb_entry_migration helper
  mm/hugetlb: Move default definition of hugepd_t earlier in the header
  mm/follow_page_mask: Add support for hugepage directory entry
  powerpc/hugetlb: Add follow_huge_pd implementation for ppc64.
  powerpc/mm/hugetlb: Remove follow_huge_addr for powerpc
  powerpc/hugetlb: Enable hugetlb migration for ppc64

Anshuman Khandual (1):
  mm/follow_page_mask: Add support for hugetlb pgd entries.

 arch/powerpc/mm/hugetlbpage.c          |  81 ++++++--------
 arch/powerpc/platforms/Kconfig.cputype |   5 +
 include/linux/hugetlb.h                |  56 ++++++----
 mm/gup.c                               | 186 +++++++++++++++++++++++----------
 mm/hugetlb.c                           |  25 ++++-
 mm/migrate.c                           |  21 ++--
 6 files changed, 230 insertions(+), 144 deletions(-)

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2.7.4