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| author | Gregory Price <gourry@gourry.net> | 2026-10-31 10:39:55 +0100 |
|---|---|---|
| committer | David Hildenbrand (Arm) <david@kernel.org> | 2026-11-03 20:20:52 +0100 |
| commit | 05f64f211a25f7d9771d4fde109aad97174a1cf3 (patch) | |
| tree | ec1386396c4adeec8314f891c227dfaa3518ce6b /tools/lib/python/kdoc/python_version.py | |
| parent | 4eee9c389b072e161549d46dcb1ae10b0222717e (diff) | |
mm/userfaultfd: compare exact registration modes before skipping
Changing registration from MISSING|WP to WP returns success but leaves
MISSING enabled. The no-op check sees that WP is already set and skips
the update, so later accesses to missing pages still wait for userspace.
Skip the update only when the current and requested UFFD modes match
exactly.
Fixes: 63b2d4174c4a ("userfaultfd: wp: add the writeprotect API to userfaultfd ioctl")
Cc: stable@vger.kernel.org
Signed-off-by: Gregory Price (Meta) <gourry@gourry.net>
[ david: apply fixup from Lorenzo ]
Tested-by: Muhammad Usama Anjum <usama.anjum@arm.com>
Link: https://patch.msgid.link/20261031-fixes_core-v3-26-d6437171ecc3@kernel.org
Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Diffstat (limited to 'tools/lib/python/kdoc/python_version.py')
0 files changed, 0 insertions, 0 deletions