selftest/vm: support xfail in mremap_test

Use ksft_test_result_xfail for the tests which are expected to fail.

Link: https://lkml.kernel.org/r/20220420215721.4868-3-sidhartha.kumar@oracle.comSigned-off-by: NSidhartha Kumar <sidhartha.kumar@oracle.com>
Reviewed-by: NShuah Khan <skhan@linuxfoundation.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

tools/testing/selftests/vm/mremap_test.c

@@ -268,7 +268,7 @@ static void run_mremap_test_case(struct test test_case, int *failures,
 
 	if (remap_time < 0) {
 		if (test_case.expect_failure)
-			ksft_test_result_pass("%s\n\tExpected mremap failure\n",
+			ksft_test_result_xfail("%s\n\tExpected mremap failure\n",
 					      test_case.name);
 		else {
 			ksft_test_result_fail("%s\n", test_case.name);