From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F3428411F83 for ; Thu, 6 Aug 2026 21:00:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786050009; cv=none; b=D2eQsf6zfV/cIBBefh9/RrsLQ1Fxvum4NwMjM728nmRz7SOW+Db0DfVhFw5G4AQu1kVEKSwp6zweUMNZNVa+B4zlk1aaW7rLZ4kghg3gENqEJ5blCTilBF5NyNELDOSATTvY3l3Ga9+LdeI8Osrv0kWjRH+Qg/V6eZA8WqJV6Ro= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786050009; c=relaxed/simple; bh=pk0xlf8Bfih6d1L1tSStOQEItC52wauIiY7pxtzhiu0=; h=Date:To:From:Subject:Message-Id; b=Ow9lEP9elpGqWeLb1R4DqA1V8lv+700NrjbO9/Cpjm0Ie4x4cLwbwrwJSlFKxkJQrbFf2qzqqQ3j4RzSyjmagAXf3tCcv5kpsXcSKK6iNBtUALDH/y1v+I75BuY5qcoLFV401Jy3faCMS0LNXLonPVO3cRO7gF2daOrTbXE7fb8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=zZ6+thIZ; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="zZ6+thIZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB77A1F00A3A; Thu, 6 Aug 2026 21:00:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1786050005; bh=ZSHSHn7J3lqgu8dsQKkmZ8L5bUImMp9wrm33/SqR4fs=; h=Date:To:From:Subject; b=zZ6+thIZAuEKfo+xlsWAMsNGIrHSjrrML2dSN6KAryBNW9lGQsTyfiD/vkXQ98aPP i8iDq8ACk+iLe9et5OlUO3JOhIzfespF8ri5nz+9eri64wc/sC1uCNXI9z9IibaIUQ GEGr/875V1G6LolotnN/4pXxVGZWftwTFqr9sXY8= Date: Thu, 06 Aug 2026 14:00:05 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,vbabka@kernel.org,usama.arif@linux.dev,surenb@google.com,shuah@kernel.org,sarthak.sharma@arm.com,ryan.roberts@arm.com,rppt@kernel.org,npache@redhat.com,nao.horiguchi@gmail.com,mhocko@suse.com,ljs@kernel.org,linmiaohe@huawei.com,liam@infradead.org,lance.yang@linux.dev,dev.jain@arm.com,david@kernel.org,baolin.wang@linux.alibaba.com,baohua@kernel.org,usama.anjum@arm.com,akpm@linux-foundation.org From: Andrew Morton Subject: + selftests-mm-skip-guard-hole-punch-test-if-madv_remove-is-unsupported.patch added to mm-new branch Message-Id: <20260806210005.AB77A1F00A3A@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: selftests/mm: skip guard hole-punch test if MADV_REMOVE is unsupported has been added to the -mm mm-new branch. Its filename is selftests-mm-skip-guard-hole-punch-test-if-madv_remove-is-unsupported.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-skip-guard-hole-punch-test-if-madv_remove-is-unsupported.patch This patch will later appear in the mm-new branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Note, mm-new is a provisional staging ground for work-in-progress patches, and acceptance into mm-new is a notification for others take notice and to finish up reviews. Please do not hesitate to respond to review feedback and post updated versions to replace or incrementally fixup patches in mm-new. The mm-new branch of mm.git is not included in linux-next If a few days of testing in mm-new is successful, the patch will me moved into mm.git's mm-unstable branch, which is included in linux-next Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via various branches at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there most days ------------------------------------------------------ From: Muhammad Usama Anjum Subject: selftests/mm: skip guard hole-punch test if MADV_REMOVE is unsupported Date: Mon, 27 Jul 2026 10:52:18 +0100 The hole_punch case verifies that guard regions survive MADV_REMOVE and that the backing range is punched out. MADV_REMOVE delegates the hole punch to the backing filesystem, which may reject the operation with EOPNOTSUPP. That result means the test cannot establish the state whose guard semantics it intends to validate. Treating the missing filesystem capability as a guard-region failure creates a false regression. Unmap the range and skip only when MADV_REMOVE fails with EOPNOTSUPP. Preserve the assertion for all other errors so failures on supported configurations remain visible. Link: https://lore.kernel.org/20260727095225.372655-3-usama.anjum@arm.com Signed-off-by: Muhammad Usama Anjum Tested-by: Sarthak Sharma Acked-by: Usama Arif Cc: Baolin Wang Cc: Barry Song Cc: David Hildenbrand Cc: Dev Jain Cc: Lance Yang Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Miaohe Lin Cc: Michal Hocko Cc: Mike Rapoport Cc: Naoya Horiguchi Cc: Nico Pache Cc: Ryan Roberts Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: Zi Yan Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/guard-regions.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) --- a/tools/testing/selftests/mm/guard-regions.c~selftests-mm-skip-guard-hole-punch-test-if-madv_remove-is-unsupported +++ a/tools/testing/selftests/mm/guard-regions.c @@ -1912,7 +1912,7 @@ TEST_F(guard_regions, hole_punch) { const unsigned long page_size = self->page_size; char *ptr; - int i; + int i, ret; if (variant->backing == ANON_BACKED) SKIP(return, "Truncation test specific to file-backed"); @@ -1944,8 +1944,12 @@ TEST_F(guard_regions, hole_punch) } /* Now hole punch the guarded region. */ - ASSERT_EQ(madvise(&ptr[3 * page_size], 4 * page_size, - MADV_REMOVE), 0); + ret = madvise(&ptr[3 * page_size], 4 * page_size, MADV_REMOVE); + if (ret == -1 && errno == EOPNOTSUPP) { + ASSERT_EQ(munmap(ptr, 10 * page_size), 0); + SKIP(return, "MADV_REMOVE not supported by filesystem"); + } + ASSERT_EQ(ret, 0); /* Ensure guard regions remain. */ for (i = 0; i < 10; i++) { _ Patches currently in -mm which might be from usama.anjum@arm.com are selftests-mm-unpoison-pages-in-memory-failure-teardown.patch selftests-mm-skip-cow-tmpfile-cases-when-fallocate-is-unsupported.patch selftests-mm-skip-guard-hole-punch-test-if-madv_remove-is-unsupported.patch selftests-mm-skip-khugepaged-swap-tests-without-swap.patch selftests-mm-skip-hard-dirty-page-cache-test-on-nfs.patch selftests-mm-retry-migration-failures-for-the-full-runtime.patch