From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A9BEC38FF16 for ; Wed, 7 Jan 2026 16:23:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767803028; cv=none; b=ZON1WrUwHe5mB8NZBxhj0ncu7Iv3Ecqc8oFt2+rkRKtZFPIpJcwBcTf3PwfIWlpj9aaf2I4etjcXxJmCf1HLlSSioBF8Zhy1bSdHVxFhn0zPcQ3ZwcFOD+niO+N01CQLE6/SQ6d4BQR4bfhTyKTa3IsbaJzwg93IXABhvCui+ks= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767803028; c=relaxed/simple; bh=bPSeSTZE7xOOvbOkWZ2IxAwQAjD0gcxMCy0atjX1a4M=; h=Date:To:From:Subject:Message-Id; b=MEvOoCNW5sOl5XoO0tgr2O6slcOV/sbLVRZlUIFYFPq2ve6qqQRoBR5t+jPc053T4YU43DexczDRHFysPJyBdVFN1A2UayvJoivnVa8oY/2oE81XtaVnr8IqT+iqUepgSx3GTCj4PGnfLLHSKyMZH1mVpEYvWX8Xe65B6+hyR9k= 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=Qe54mW4a; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="Qe54mW4a" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 612F9C4CEF1; Wed, 7 Jan 2026 16:23:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1767803024; bh=bPSeSTZE7xOOvbOkWZ2IxAwQAjD0gcxMCy0atjX1a4M=; h=Date:To:From:Subject:From; b=Qe54mW4a1+/ZAXc5non7HaTrCfheUVx0MQO+9UjWLnZRAMVNk0VuSbZSBeeNSP8BG Ar6AjocnzFjNjtZXXn6J/9M4ySQWkj45f074MPbT50wGLgVdIs+868dllsKarEfiey Q0OmpiPb6bo2v/R1E4eXywS1MDYfFl5GvXUx24gI= Date: Wed, 07 Jan 2026 08:23:43 -0800 To: mm-commits@vger.kernel.org,vbabka@suse.cz,surenb@google.com,shuah@kernel.org,rppt@kernel.org,nao.horiguchi@gmail.com,mhocko@suse.com,lorenzo.stoakes@oracle.com,liam.howlett@oracle.com,david@kernel.org,linmiaohe@huawei.com,akpm@linux-foundation.org From: Andrew Morton Subject: + selftests-mm-add-memory-failure-clean-pagecache-test.patch added to mm-new branch Message-Id: <20260107162344.612F9C4CEF1@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: add memory failure clean pagecache test has been added to the -mm mm-new branch. Its filename is selftests-mm-add-memory-failure-clean-pagecache-test.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-add-memory-failure-clean-pagecache-test.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 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: Miaohe Lin Subject: selftests/mm: add memory failure clean pagecache test Date: Wed, 7 Jan 2026 17:37:09 +0800 This patch adds a new testcase to validate memory failure handling for clean pagecache. This test performs similar operations as anonymous pages except allocating memory using mmap() with a file fd. This test helps ensure that memory failure handling for clean pagecache works correctly, including unchanged page content, page isolation, and recovery paths. Link: https://lkml.kernel.org/r/20260107093710.3928374-3-linmiaohe@huawei.com Signed-off-by: Miaohe Lin Cc: David Hildenbrand (Red Hat) Cc: Liam Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Naoya Horiguchi Cc: Shuah Khan Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton --- tools/testing/selftests/mm/memory-failure.c | 46 ++++++++++++++++++ 1 file changed, 46 insertions(+) --- a/tools/testing/selftests/mm/memory-failure.c~selftests-mm-add-memory-failure-clean-pagecache-test +++ a/tools/testing/selftests/mm/memory-failure.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include #include @@ -24,7 +25,9 @@ enum inject_type { enum result_type { MADV_HARD_ANON, + MADV_HARD_CLEAN_PAGECACHE, MADV_SOFT_ANON, + MADV_SOFT_CLEAN_PAGECACHE, }; static jmp_buf signal_jmp_buf; @@ -154,6 +157,8 @@ static void check(struct __test_metadata switch (type) { case MADV_SOFT_ANON: + case MADV_HARD_CLEAN_PAGECACHE: + case MADV_SOFT_CLEAN_PAGECACHE: /* It is not expected to receive a SIGBUS signal. */ ASSERT_EQ(setjmp, 0); @@ -236,4 +241,45 @@ TEST_F(memory_failure, anon) ASSERT_EQ(munmap(addr, self->page_size), 0); } +TEST_F(memory_failure, clean_pagecache) +{ + const char *fname = "./clean-page-cache-test-file"; + int fd; + char *addr; + int ret; + + fd = open(fname, O_RDWR | O_CREAT, 0664); + if (fd < 0) + SKIP(return, "failed to open test file.\n"); + unlink(fname); + ftruncate(fd, self->page_size); + + addr = mmap(0, self->page_size, PROT_READ | PROT_WRITE, + MAP_SHARED, fd, 0); + if (addr == MAP_FAILED) + SKIP(return, "mmap failed, not enough memory.\n"); + memset(addr, 0xce, self->page_size); + fsync(fd); + + prepare(_metadata, self, addr); + + ret = sigsetjmp(signal_jmp_buf, 1); + if (!self->triggered) { + self->triggered = true; + ASSERT_EQ(variant->inject(self, addr), 0); + FORCE_READ(*addr); + } + + if (variant->type == MADV_HARD) + check(_metadata, self, addr, MADV_HARD_CLEAN_PAGECACHE, ret); + else + check(_metadata, self, addr, MADV_SOFT_CLEAN_PAGECACHE, ret); + + cleanup(_metadata, self, addr); + + ASSERT_EQ(munmap(addr, self->page_size), 0); + + ASSERT_EQ(close(fd), 0); +} + TEST_HARNESS_MAIN _ Patches currently in -mm which might be from linmiaohe@huawei.com are selftests-mm-add-memory-failure-anonymous-page-test.patch selftests-mm-add-memory-failure-clean-pagecache-test.patch selftests-mm-add-memory-failure-dirty-pagecache-test.patch