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The added folio_split_race_test is a modified C port of the race condition test from [1]. The test creates shmem huge pages, where the main thread punches holes in the shmem to cause folio_split() in the kernel and a set of 16 threads reads the shmem to cause filemap_get_entry() in the kernel. filemap_get_entry() reads the folio and xarray split by folio_split() locklessly. The original test[2] is written in rust and uses memfd (shmem backed). This C port uses shmem directly and use a single process. Note: the initial rust to C conversion is done by Cursor. Link: https://lore.kernel.org/all/CAKNNEtw5_kZomhkugedKMPOG-sxs5Q5OLumWJdiWXv+C9Yct0w@mail.gmail.com/ [1] Link: https://github.com/dfinity/thp-madv-remove-test [2] Link: https://lkml.kernel.org/r/20260323163717.184107-1-ziy@nvidia.com Co-developed-by: Bas van Dijk <bas@dfinity.org> Signed-off-by: Bas van Dijk <bas@dfinity.org> Co-developed-by: Adam Bratschi-Kaye <adam.bratschikaye@dfinity.org> Signed-off-by: Adam Bratschi-Kaye <adam.bratschikaye@dfinity.org> Signed-off-by: Zi Yan <ziy@nvidia.com> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Barry Song <baohua@kernel.org> Cc: David Hildenbrand <david@kernel.org> Cc: Dev Jain <dev.jain@arm.com> Cc: Hugh Dickins <hughd@google.com> Cc: Lance Yang <lance.yang@linux.dev> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michal Hocko <mhocko@suse.com> Cc: Mike Rapoport <rppt@kernel.org> Cc: Nico Pache <npache@redhat.com> Cc: Ryan Roberts <ryan.roberts@arm.com> Cc: Shuah Khan <shuah@kernel.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
65 lines
975 B
Plaintext
65 lines
975 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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cow
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hugepage-mmap
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hugepage-mremap
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hugepage-shm
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hugepage-vmemmap
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hugetlb-madvise
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hugetlb-read-hwpoison
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hugetlb-soft-offline
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khugepaged
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map_hugetlb
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map_populate
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thuge-gen
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compaction_test
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memory-failure
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migration
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mlock2-tests
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mrelease_test
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mremap_dontunmap
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mremap_test
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on-fault-limit
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transhuge-stress
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pagemap_ioctl
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pfnmap
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process_madv
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*.tmp*
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protection_keys
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protection_keys_32
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protection_keys_64
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madv_populate
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uffd-stress
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uffd-unit-tests
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uffd-wp-mremap
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mlock-intersect-test
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mlock-random-test
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virtual_address_range
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gup_test
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va_128TBswitch
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map_fixed_noreplace
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write_to_hugetlbfs
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hmm-tests
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memfd_secret
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soft-dirty
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split_huge_page_test
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ksm_tests
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local_config.h
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local_config.mk
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ksm_functional_tests
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mdwe_test
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gup_longterm
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mkdirty
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va_high_addr_switch
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hugetlb_fault_after_madv
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hugetlb_madv_vs_map
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mseal_test
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droppable
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hugetlb_dio
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pkey_sighandler_tests_32
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pkey_sighandler_tests_64
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guard-regions
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merge
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prctl_thp_disable
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rmap
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folio_split_race_test
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