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Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shuah Khan , John Hubbard , Kalesh Singh , Anshuman Khandual , Park Tae-sun , linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Sarthak Sharma Subject: [PATCH RESEND 0/9] selftests/mm: improve mremap_test Date: Thu, 24 Sep 2026 10:30:00 +0530 Message-ID: <20260924050009.19974-1-sarthak.sharma@arm.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: EB21240002 X-Stat-Signature: wpit33gnpbt6676dwzyupskr6m7ehcbt X-HE-Tag: 1790226022-905296 X-HE-Meta: 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 cvAiXQ7+ uPZ6dmuhftfYtnfE75ZgSRO3CHEISpmiP0QoJJCUSkB/rJTiWp9yJjCciEdrUqNxc7G5jPCwIm/Ig0Hqs6NTUOfVlBuO7urg48s20tYWiQdVPvzQpuiuYE9scge8ouxvIV7eT2QquAgON8RiH7BZElczTVQRKh/xmD+gUn8Fseh967tu/5ofdYGGFaSXBmsLAxpPMPcI1O8X/3ibmcUFntSW9mCpelDdyUrQWpIJtG1Skr4E= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This series fixes several correctness issues in mremap_test and simplifies and strengthens its data validation. Patch 1 converts the mremap_test to use kselftest helpers, removes manual tracking of failed tests and corrects some spelling errors. Patches 2 to 5 fix userfaultfd skipping, unexpected mremap success handling, multi-VMA data validation and failure reporting when data corruption is detected. Patch 6 removes the randomization and uses a simple pattern based approach. Patch 7 removes perf tests and timing infrastructure. Patch 8 removes validation threshold and always validates complete mappings. Patch 9 strengthens the multi VMA validation by also checking the mapping state of holes after remapping. --- Sarthak Sharma (9): selftests/mm: mremap_test: use kselftest helpers selftests/mm: mremap_test: skip test when userfaultfd is unavailable selftests/mm: mremap_test: fail unexpected mremap successes selftests/mm: mremap_test: correct multiple VMA range size selftests/mm: mremap_test: fail on data corruption selftests/mm: mremap_test: replace random data with deterministic pattern selftests/mm: mremap_test: remove perf tests and timing selftests/mm: mremap_test: remove validation threshold selftests/mm: mremap_test: strengthen multi VMA validation tools/testing/selftests/mm/mremap_test.c | 600 +++++++++-------------- 1 file changed, 220 insertions(+), 380 deletions(-) -- 2.53.0