kernel/tools/testing/selftests/vm/hugepage-mremap.c, branch linux-6.2.y

selftests/vm: use memfd for hugepage-mremap test

2022-11-09T01:37:11Z

For dropping the hugetlb mountpoint in run_vmtests.sh. Cleaned it up a little bit around the changed codes. Link: https://lkml.kernel.org/r/20221014144013.94027-1-peterx@redhat.com Signed-off-by: Peter Xu Cc: Axel Rasmussen Cc: Mike Kravetz Signed-off-by: Andrew Morton

selftest/vm: uninitialized variable in main()

2022-07-30T01:07:17Z

Initialize "length" to zero by default. Link: https://lkml.kernel.org/r/YtZzjvHXVXMXxpXO@kili Fixes: ff712a627f72 ("selftests/vm: cleanup hugetlb file after mremap test") Signed-off-by: Dan Carpenter Reviewed-by: Mina Almasry Reviewed-by: Muchun Song Cc: Mike Kravetz Cc: Shuah Khan Signed-off-by: Andrew Morton

selftest/vm: test that mremap fails on non-existent vma

2022-05-13T14:20:07Z

Add a regression test that validates that mremap fails for vma's that don't exist. Link: https://lkml.kernel.org/r/20220427224439.23828-3-dossche.niels@gmail.com Signed-off-by: Niels Dossche Cc: Mina Almasry Cc: Mike Kravetz Signed-off-by: Andrew Morton

selftests/vm: cleanup hugetlb file after mremap test

2022-03-05T19:08:32Z

The hugepage-mremap test will create a file in a hugetlb filesystem. In a default 'run_vmtests' run, the file will contain all the hugetlb pages. After the test, the file remains and there are no free hugetlb pages for subsequent tests. This causes those hugetlb tests to fail. Change hugepage-mremap to take the name of the hugetlb file as an argument. Unlink the file within the test, and just to be sure remove the file in the run_vmtests script. Link: https://lkml.kernel.org/r/20220201033459.156944-1-mike.kravetz@oracle.com Signed-off-by: Mike Kravetz Reviewed-by: Shuah Khan Acked-by: Yosry Ahmed Reviewed-by: Muchun Song Reviewed-by: Mina Almasry Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm, hugepages: make memory size variable in hugepage-mremap selftest

2022-01-15T14:30:29Z

The hugetlb vma mremap() test currently maps 1GB of memory to trigger pmd sharing and make sure that 'unshare' path in mremap code works. The test originally only mapped 10MB of memory (as specified by the header comment) but was later modified to 1GB to tackle this case. However, not all machines will have 1GB of memory to spare for this test. Adding a mapping size arg will allow run_vmtest.sh to pass an adequate mapping size, while allowing users to run the test independently with arbitrary size mappings. Link: https://lkml.kernel.org/r/20211124203805.3700355-1-yosryahmed@google.com Signed-off-by: Yosry Ahmed Cc: Shuah Khan Cc: Mina Almasry Cc: Mike Kravetz Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm: remove duplicate include in hugepage-mremap.c

2021-11-06T20:30:39Z

Remove duplicate includes 'unistd.h' included in '/tools/testing/selftests/vm/hugepage-mremap.c' is duplicated.It is also included on 23 line. Link: https://lkml.kernel.org/r/20211018102336.869726-1-ran.jianping@zte.com.cn Signed-off-by: Ran Jianping Reported-by: Zeal Robot Cc: Shuah Khan Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

mm, hugepages: add hugetlb vma mremap() test

2021-11-06T20:30:39Z

[almasrymina@google.com: v8] Link: https://lkml.kernel.org/r/20211014200542.4126947-2-almasrymina@google.com [wanjiabing@vivo.com: remove duplicated include in hugepage-mremap] Link: https://lkml.kernel.org/r/20211021122944.8857-1-wanjiabing@vivo.com Link: https://lkml.kernel.org/r/20211013195825.3058275-2-almasrymina@google.com Signed-off-by: Mina Almasry Signed-off-by: Wan Jiabing Acked-by: Mike Kravetz Cc: Ken Chen Cc: Chris Kennelly Cc: Michal Hocko Cc: Vlastimil Babka Cc: Kirill Shutemov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds