The dummy variable is required in order to make this work, so declare it as volatile in order to avoid the clang compiler warning.
Signed-off-by: John Hubbard jhubbard@nvidia.com --- tools/testing/selftests/mm/hugetlb-madvise.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/mm/hugetlb-madvise.c b/tools/testing/selftests/mm/hugetlb-madvise.c index 28426e30d9bc..3296ccaf7525 100644 --- a/tools/testing/selftests/mm/hugetlb-madvise.c +++ b/tools/testing/selftests/mm/hugetlb-madvise.c @@ -65,7 +65,7 @@ void write_fault_pages(void *addr, unsigned long nr_pages)
void read_fault_pages(void *addr, unsigned long nr_pages) { - unsigned long dummy = 0; + volatile unsigned long dummy = 0; unsigned long i;
for (i = 0; i < nr_pages; i++)