kernel/linux.git/tools/testing/selftests/mincore, branch v6.18.21

Merge tag 'mm-hotfixes-stable-2025-04-16-19-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2025-04-17T03:07:32+00:00

Pull misc hotfixes from Andrew Morton: "31 hotfixes. 9 are cc:stable and the remainder address post-6.15 issues or aren't considered necessary for -stable kernels. 22 patches are for MM, 9 are otherwise" * tag 'mm-hotfixes-stable-2025-04-16-19-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (31 commits) MAINTAINERS: update HUGETLB reviewers mm: fix apply_to_existing_page_range() selftests/mm: fix compiler -Wmaybe-uninitialized warning alloc_tag: handle incomplete bulk allocations in vm_module_tags_populate mailmap: add entry for Jean-Michel Hautbois mm: (un)track_pfn_copy() fix + doc improvements mm: fix filemap_get_folios_contig returning batches of identical folios mm/hugetlb: add a line break at the end of the format string selftests: mincore: fix tmpfs mincore test failure mm/hugetlb: fix set_max_huge_pages() when there are surplus pages mm/cma: report base address of single range correctly mm: page_alloc: speed up fallbacks in rmqueue_bulk() kunit: slub: add module description mm/kasan: add module decription ucs2_string: add module description zlib: add module description fpga: tests: add module descriptions samples/livepatch: add module descriptions ASN.1: add module description mm/vma: add give_up_on_oom option on modify/merge, use in uffd release ...

selftests: mincore: fix tmpfs mincore test failure

2025-04-12T00:32:40+00:00

When running mincore test cases, I encountered the following failures: " mincore_selftest.c:359:check_tmpfs_mmap:Expected ra_pages (511) == 0 (0) mincore_selftest.c:360:check_tmpfs_mmap:Read-ahead pages found in memory check_tmpfs_mmap: Test terminated by assertion FAIL global.check_tmpfs_mmap not ok 5 global.check_tmpfs_mmap FAILED: 4 / 5 tests passed " The reason for the test case failure is that my system automatically enabled tmpfs large folio allocation by adding the 'transparent_hugepage_tmpfs=always' cmdline. However, the test case still expects the tmpfs mounted on /dev/shm to allocate small folios, which leads to assertion failures when verifying readahead pages. As discussed with David, there's no reason to continue checking the readahead logic for tmpfs. Drop it to fix this issue. Link: https://lkml.kernel.org/r/9a00856cc6a8b4e46f4ab8b1af11ce5fc1a31851.1744025467.git.baolin.wang@linux.alibaba.com Fixes: d635ccdb435c ("mm: shmem: add a kernel command line to change the default huge policy for tmpfs") Signed-off-by: Baolin Wang Acked-by: Zi Yan Acked-by: David Hildenbrand Cc: Barry Song <21cnbao@gmail.com> Cc: Hugh Dickins Cc: Matthew Wilcox (Oracle) Cc: Ryan Roberts Signed-off-by: Andrew Morton

selftests/mincore: Allow read-ahead pages to reach the end of the file

2025-04-08T23:08:50+00:00

When running the mincore_selftest on a system with an XFS file system, it failed the "check_file_mmap" test case due to the read-ahead pages reaching the end of the file. The failure log is as below: RUN global.check_file_mmap ... mincore_selftest.c:264:check_file_mmap:Expected i (1024) < vec_size (1024) mincore_selftest.c:265:check_file_mmap:Read-ahead pages reached the end of the file check_file_mmap: Test failed FAIL global.check_file_mmap This is because the read-ahead window size of the XFS file system on this machine is 4 MB, which is larger than the size from the #PF address to the end of the file. As a result, all the pages for this file are populated. blockdev --getra /dev/nvme0n1p5 8192 blockdev --getbsz /dev/nvme0n1p5 512 This issue can be fixed by extending the current FILE_SIZE 4MB to a larger number, but it will still fail if the read-ahead window size of the file system is larger enough. Additionally, in the real world, read-ahead pages reaching the end of the file can happen and is an expected behavior. Therefore, allowing read-ahead pages to reach the end of the file is a better choice for the "check_file_mmap" test case. Link: https://lore.kernel.org/r/20250311080940.21413-1-qiuxu.zhuo@intel.com Reported-by: Yi Lai Signed-off-by: Qiuxu Zhuo Signed-off-by: Shuah Khan

selftests/mincore: fix skip condition for check_huge_pages test

2023-07-13T18:51:13+00:00

The check_huge_pages test was failing instead of skipping on qemu-armv7 because the skip condition wasn't handled properly. Add an additional check to fix it. Signed-off-by: Ricardo Cañuelo Reported-by: Naresh Kamboju Reported-by: Linux Kernel Functional Testing Reviewed-by: Muhammad Usama Anjum Tested-by: Anders Roxell Closes: https://lore.kernel.org/all/CA+G9fYuoB8Ug8PcTU-YGmemL7_eeEksXFihvxWF6OikD7sK7pA@mail.gmail.com Signed-off-by: Shuah Khan

selftests: skip mincore.check_file_mmap when fs lacks needed support

2022-01-27T23:40:45+00:00

Report mincore.check_file_mmap as SKIP instead of FAIL if the underlying filesystem lacks support of O_TMPFILE or fallocate since such failures are not really related to mincore functionality. Cc: Ricardo Cañuelo Signed-off-by: Cristian Marussi Signed-off-by: Shuah Khan

selftests: remove duplicate include

2021-05-07T07:26:33+00:00

'assert.h' included in 'sparsebit.c' is duplicated. It is also included in the 161th line. 'string.h' included in 'mincore_selftest.c' is duplicated. It is also included in the 15th line. 'sched.h' included in 'tlbie_test.c' is duplicated. It is also included in the 33th line. Link: https://lkml.kernel.org/r/20210316073336.426255-1-zhang.yunkai@zte.com.cn Signed-off-by: Zhang Yunkai Cc: Paolo Bonzini Cc: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

selftests: add mincore() tests

2020-08-07T18:33:27+00:00

Add a test suite for the mincore() syscall. It tests most of its use cases as well as its interface. Tests implemented: - basic interface test - behavior on anonymous mappings - behavior on anonymous mappings with huge tlb pages - file-backed mapping with a regular file - file-backed mapping with a tmpfs file Signed-off-by: Ricardo Cañuelo Signed-off-by: Andrew Morton Link: http://lkml.kernel.org/r/20200728100450.4065-1-ricardo.canuelo@collabora.com Signed-off-by: Linus Torvalds