[PATCH 0/3] Consolidate system call hugetlb page size encodings

[Mike Kravetz]

These patches are the result of discussions in this thread [1].  The
following changes are made in the patch set:

1) Put all the log2 encoded huge page size definitions in a common header
   file.  The idea is have a set of definitions that can be use as the
   basis for system call specific definitions such as MAP_HUGE_* and
   SHM_HUGE_*.
2) Remove MAP_HUGE_* definitions in arch specific files.  All these
   definitions are the same.  Consolidate all definitions in the primary
   user header file (uapi/linux/mman.h).
3) Remove SHM_HUGE_* definitions intended for user space from kernel
   header file, and add to user (uapi/linux/shm.h) header file.  Add
   definitions for all known huge page size encodings as in mmap.

[1]https://lkml.org/lkml/2017/3/8/548

Mike Kravetz (3):
  mm:hugetlb: Define system call hugetlb size encodings in single file
  mm: arch: Consolidate mmap hugetlb size encodings
  mm:shm: Use new hugetlb size encoding definitions

 arch/alpha/include/uapi/asm/mman.h        | 11 ----------
 arch/mips/include/uapi/asm/mman.h         | 11 ----------
 arch/parisc/include/uapi/asm/mman.h       | 11 ----------
 arch/powerpc/include/uapi/asm/mman.h      | 16 ---------------
 arch/x86/include/uapi/asm/mman.h          |  3 ---
 arch/xtensa/include/uapi/asm/mman.h       | 11 ----------
 include/linux/shm.h                       | 17 ----------------
 include/uapi/asm-generic/hugetlb_encode.h | 34 +++++++++++++++++++++++++++++++
 include/uapi/asm-generic/mman-common.h    | 11 ----------
 include/uapi/linux/mman.h                 | 22 ++++++++++++++++++++
 include/uapi/linux/shm.h                  | 31 ++++++++++++++++++++++++++--
 11 files changed, 85 insertions(+), 93 deletions(-)
 create mode 100644 include/uapi/asm-generic/hugetlb_encode.h

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2.7.5