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2020-05-23selftests/vm/write_to_hugetlbfs.c: fix unused variable warningJohn Hubbard1-2/+0
Remove unused variable "i", which was triggering a compiler warning. Fixes: 29750f71a9b4 ("hugetlb_cgroup: add hugetlb_cgroup reservation tests") Signed-off-by: John Hubbard <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Reviewed-By: Mina Almasry <[email protected]> Cc: Brian Geffon <[email protected]> Cc: "Kirill A . Shutemov" <[email protected]> Cc: Shuah Khan <[email protected]> Cc: Ralph Campbell <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>
2020-04-02hugetlb_cgroup: add hugetlb_cgroup reservation testsMina Almasry1-0/+242
The tests use both shared and private mapped hugetlb memory, and monitors the hugetlb usage counter as well as the hugetlb reservation counter. They test different configurations such as hugetlb memory usage via hugetlbfs, or MAP_HUGETLB, or shmget/shmat, and with and without MAP_POPULATE. Also add test for hugetlb reservation reparenting, since this is a subtle issue. Signed-off-by: Mina Almasry <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Tested-by: Sandipan Das <[email protected]> [powerpc64] Acked-by: Mike Kravetz <[email protected]> Cc: Sandipan Das <[email protected]> Cc: David Rientjes <[email protected]> Cc: Greg Thelen <[email protected]> Cc: Shakeel Butt <[email protected]> Cc: Shuah Khan <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Linus Torvalds <[email protected]>