[PATCH 0/4] thp: simplify freeze_page() and unfreeze_page()

[Kirill A. Shutemov]

This patchset rewrites freeze_page() and unfreeze_page() using try_to_unmap()
and remove_migration_ptes(). Result is much simplier, but somewhat slower.
See the last patch for details.

I did quick sanity check. More testing is required.

Any comments?

Kirill A. Shutemov (4):
  rmap: introduce rmap_walk_locked()
  rmap: extend try_to_unmap() to be usable by split_huge_page()
  mm: make remove_migration_ptes() beyond mm/migration.c
  thp: rewrite freeze_page()/unfreeze_page() with generic rmap walkers

 include/linux/huge_mm.h |   7 ++
 include/linux/rmap.h    |   6 ++
 mm/huge_memory.c        | 219 ++++++------------------------------------------
 mm/migrate.c            |  13 +--
 mm/rmap.c               |  49 ++++++++---
 5 files changed, 83 insertions(+), 211 deletions(-)

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2.7.0