diff options
| author | Hugh Dickins <hughd@google.com> | 2018-12-01 01:10:25 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-01 01:56:15 +0300 |
| commit | 701270fa193aadf00bdcf607738f64997275d4c7 (patch) | |
| tree | 6f9a0bd6ab13d9213050c0ff4e739953dd5c7570 /mm/shmem.c | |
| parent | 006d3ff27e884f80bd7d306b041afc415f63598f (diff) | |
| download | linux-701270fa193aadf00bdcf607738f64997275d4c7.tar.xz | |
mm/khugepaged: collapse_shmem() stop if punched or truncated
Huge tmpfs testing showed that although collapse_shmem() recognizes a
concurrently truncated or hole-punched page correctly, its handling of
holes was liable to refill an emptied extent. Add check to stop that.
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1811261522040.2275@eggly.anvils
Fixes: f3f0e1d2150b2 ("khugepaged: add support of collapse for tmpfs/shmem pages")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Matthew Wilcox <willy@infradead.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: <stable@vger.kernel.org> [4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/shmem.c')
0 files changed, 0 insertions, 0 deletions