From: "Kiryl Shutsemau (Meta)" <[email protected]>
Patch 1 fixes PAGEMAP_SCAN reporting a PMD hole in a uffd-wp VMA as
not-written (Cc stable). Patch 2 adds the selftest, split out so it is
not backported.
Changes since v4 [1], addressing David's review:
- Split the selftest into a separate patch (2/2); only the fix (1/2)
is Cc stable.
- Rework the commit message and shorten the code comment.
- Rework the test: mirror unpopulated_scan_test(), skip-and-continue
on setup failure, rename to unpopulated_thp_scan_test().
[1] https://lore.kernel.org/all/[email protected]/
Kiryl Shutsemau (Meta) (2):
fs/proc/task_mmu: fix PAGEMAP_SCAN written state for PMD holes
selftests/mm: add PAGEMAP_SCAN test for THP PMD holes
fs/proc/task_mmu.c | 20 ++++++-
tools/testing/selftests/mm/pagemap_ioctl.c | 66 +++++++++++++++++++++-
2 files changed, 83 insertions(+), 3 deletions(-)
base-commit: 9795ad96d277c4af049fe30de1cebd4e39d7bcbe
--
2.54.0
