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It was changed from align up to align down. The hugetlb-madvise test explicitly tests this behavior. Change test to expect new behavior. Reported-by: kernel test robot Link: https://lore.kernel.org/oe-lkp/202211040619.2ec447d7-oliver.sang@intel.com Signed-off-by: Mike Kravetz --- tools/testing/selftests/vm/hugetlb-madvise.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/vm/hugetlb-madvise.c b/tools/testing/selftests/vm/hugetlb-madvise.c index f96435b70986..a634f47d1e56 100644 --- a/tools/testing/selftests/vm/hugetlb-madvise.c +++ b/tools/testing/selftests/vm/hugetlb-madvise.c @@ -195,7 +195,7 @@ int main(int argc, char **argv) exit(1); } - /* addr + length should be aligned up to huge page size */ + /* addr + length should be aligned down to huge page size */ if (madvise(addr, ((NR_HUGE_PAGES - 1) * huge_page_size) + base_page_size, MADV_DONTNEED)) { @@ -203,10 +203,11 @@ int main(int argc, char **argv) exit(1); } - /* should free all pages in mapping */ - validate_free_pages(free_hugepages); + /* should free all but last page in mapping */ + validate_free_pages(free_hugepages - 1); (void)munmap(addr, NR_HUGE_PAGES * huge_page_size); + validate_free_pages(free_hugepages); /* * Test MADV_DONTNEED on anonymous private mapping