[PATCH v5 0/9] extend hugepage migration

[Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>]

Here is the 5th version of hugepage migration patchset.
Changes in this version are as follows:
 - removed putback_active_hugepages() as a cleanup (1/9)
 - added code to check movability of a given hugepage (8/9)
 - set GFP MOVABLE flag depending on the movability of hugepage (9/9).

I feel that 8/9 and 9/9 contain some new things, so need reviews on them.

TODOs: (likely to be done after this work)
 - split page table lock for pmd/pud based hugepage (maybe applicable to thp)
 - improve alloc_migrate_target (especially in node choice)
 - using page walker in check_range

Thanks,
Naoya Horiguchi
---
GitHub:
  git://github.com/Naoya-Horiguchi/linux.git extend_hugepage_migration.v5

Test code:
  git://github.com/Naoya-Horiguchi/test_hugepage_migration_extension.git

Naoya Horiguchi (9):
      migrate: make core migration code aware of hugepage
      soft-offline: use migrate_pages() instead of migrate_huge_page()
      migrate: add hugepage migration code to migrate_pages()
      migrate: add hugepage migration code to move_pages()
      mbind: add hugepage migration code to mbind()
      migrate: remove VM_HUGETLB from vma flag check in vma_migratable()
      memory-hotplug: enable memory hotplug to handle hugepage
      migrate: check movability of hugepage in unmap_and_move_huge_page()
      prepare to remove /proc/sys/vm/hugepages_treat_as_movable

 Documentation/sysctl/vm.txt   |  13 +---
 arch/arm/mm/hugetlbpage.c     |   5 ++
 arch/arm64/mm/hugetlbpage.c   |   5 ++
 arch/ia64/mm/hugetlbpage.c    |   5 ++
 arch/metag/mm/hugetlbpage.c   |   5 ++
 arch/mips/mm/hugetlbpage.c    |   5 ++
 arch/powerpc/mm/hugetlbpage.c |  10 ++++
 arch/s390/mm/hugetlbpage.c    |   5 ++
 arch/sh/mm/hugetlbpage.c      |   5 ++
 arch/sparc/mm/hugetlbpage.c   |   5 ++
 arch/tile/mm/hugetlbpage.c    |   5 ++
 arch/x86/mm/hugetlbpage.c     |   8 +++
 include/linux/hugetlb.h       |  25 ++++++++
 include/linux/mempolicy.h     |   2 +-
 include/linux/migrate.h       |   5 --
 mm/hugetlb.c                  | 134 +++++++++++++++++++++++++++++++++++++-----
 mm/memory-failure.c           |  15 ++++-
 mm/memory.c                   |  17 +++++-
 mm/memory_hotplug.c           |  42 ++++++++++---
 mm/mempolicy.c                |  46 +++++++++++++--
 mm/migrate.c                  |  61 ++++++++++---------
 mm/page_alloc.c               |  12 ++++
 mm/page_isolation.c           |  14 +++++
 23 files changed, 371 insertions(+), 78 deletions(-)