On 6 Jun 2024, at 6:58, Pankaj Raghav (Samsung) wrote: > From: Pankaj Raghav <p.raghav@xxxxxxxxxxx> > > create_pagecache_thp_and_fd() in split_huge_page_test.c used the > variable dummy to perform mmap read. > > However, this test was skipped even on XFS which has large folio > support. The issue was compiler (gcc 13.2.0) was optimizing out the > dummy variable, therefore, not creating huge page in the page cache. > > Add volatile keyword to force compiler not to optimize out the loop > where we read from the mmaped addr. > > Signed-off-by: Pankaj Raghav <p.raghav@xxxxxxxxxxx> > --- > tools/testing/selftests/mm/split_huge_page_test.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > Acked-by: Zi Yan <ziy@xxxxxxxxxx> Best Regards, Yan, Zi
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