[PATCH v2 4/9] selftests/mm: Skip uffd-wp-mremap if userfaultfd not available

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It's obvious that this should fail in that case, but still, save the
reader the effort of figuring out that they've run into this by just
SKIPping

Signed-off-by: Brendan Jackman <jackmanb@xxxxxxxxxx>
---
 tools/testing/selftests/mm/uffd-wp-mremap.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/mm/uffd-wp-mremap.c b/tools/testing/selftests/mm/uffd-wp-mremap.c
index 2c4f984bd73caa17e12b9f4a5bb71e7fdf5d8554..c2ba7d46c7b4581a3c32a6b6acd148e3e89c2172 100644
--- a/tools/testing/selftests/mm/uffd-wp-mremap.c
+++ b/tools/testing/selftests/mm/uffd-wp-mremap.c
@@ -182,7 +182,10 @@ static void test_one_folio(size_t size, bool private, bool swapout, bool hugetlb
 
 	/* Register range for uffd-wp. */
 	if (userfaultfd_open(&features)) {
-		ksft_test_result_fail("userfaultfd_open() failed\n");
+		if (errno == ENOENT)
+			ksft_test_result_skip("userfaultfd not available\n");
+		else
+			ksft_test_result_fail("userfaultfd_open() failed\n");
 		goto out;
 	}
 	if (uffd_register(uffd, mem, size, false, true, false)) {

-- 
2.48.1.601.g30ceb7b040-goog





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