[PATCH v2 0/5] support shmem mTHP collapse
From: Baolin Wang
Date: Tue Aug 20 2024 - 05:49:52 EST
Hi,
Shmem already supports mTHP allocation[1], and this patch set adds support
for shmem mTHP collapse, as well as adding relevant test cases. Please
help to review. Thanks.
Note: all khugepaged selftests have passed.
[1] https://lore.kernel.org/all/cover.1718090413.git.baolin.wang@xxxxxxxxxxxxxxxxx/T/#m4bd7e701c7b5f36f712055e4360cad593a22b3bf
Changes from v1:
- Simplify is_refcount_suitable(), per David.
- Add reviewed tag from David. Thanks.
- Update some comments.
Baolin Wang (5):
mm: khugepaged: expand the is_refcount_suitable() to support file
folios
mm: khugepaged: use the number of pages in the folio to check the
reference count
mm: khugepaged: support shmem mTHP copy
mm: khugepaged: support shmem mTHP collapse
selftests: mm: support shmem mTHP collapse testing
mm/khugepaged.c | 62 +++++++++++------------
tools/testing/selftests/mm/khugepaged.c | 4 +-
tools/testing/selftests/mm/thp_settings.c | 46 ++++++++++++++---
tools/testing/selftests/mm/thp_settings.h | 9 +++-
4 files changed, 82 insertions(+), 39 deletions(-)
--
2.39.3