diff options
| author | Kirill A. Shutemov | 2016-07-26 15:26:21 -0700 |
|---|---|---|
| committer | Linus Torvalds | 2016-07-26 16:19:19 -0700 |
| commit | 657e3038c4e6fcd3cef41f2b01c655a685a7b8c7 (patch) | |
| tree | ad015c70c6a1befac182b9113ac4d27cf94dadb7 /mm/khugepaged.c | |
| parent | 800d8c63b2e989c2e349632d1648119bf5862f01 (diff) | |
shmem, thp: respect MADV_{NO,}HUGEPAGE for file mappings
Let's wire up existing madvise() hugepage hints for file mappings.
MADV_HUGEPAGE advise shmem to allocate huge page on page fault in the
VMA. It only has effect if the filesystem is mounted with huge=advise
or huge=within_size.
MADV_NOHUGEPAGE prevents hugepage from being allocated on page fault in
the VMA. It doesn't prevent a huge page from being allocated by other
means, i.e. page fault into different mapping or write(2) into file.
Link: http://lkml.kernel.org/r/1466021202-61880-31-git-send-email-kirill.shutemov@linux.intel.com
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/khugepaged.c')
0 files changed, 0 insertions, 0 deletions