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

Mike Kravetz
2017-07-31T18:56:23Z

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

--
2.7.5

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