[PATCH v2 3/4] selftests: openat2: switch from custom ARRAY_LEN to ARRAY_SIZE

[Aleksa Sarai <aleksa@amutable.com>]

For whatever reason, the original version of the tests used a custom
version of ARRAY_SIZE, but ARRAY_SIZE works just as well.

Signed-off-by: Aleksa Sarai <aleksa@amutable.com>
---
 tools/testing/selftests/filesystems/openat2/helpers.h      |  1 -
 tools/testing/selftests/filesystems/openat2/openat2_test.c | 12 ++++++------
 tools/testing/selftests/filesystems/openat2/resolve_test.c |  4 ++--
 3 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/tools/testing/selftests/filesystems/openat2/helpers.h b/tools/testing/selftests/filesystems/openat2/helpers.h
index 975de513af86..f56c0c6e3ad1 100644
--- a/tools/testing/selftests/filesystems/openat2/helpers.h
+++ b/tools/testing/selftests/filesystems/openat2/helpers.h
@@ -17,7 +17,6 @@
 #include <linux/unistd.h>
 #include "kselftest.h"
 
-#define ARRAY_LEN(X) (sizeof (X) / sizeof (*(X)))
 #define BUILD_BUG_ON(e) ((void)(sizeof(struct { int:(-!!(e)); })))
 
 /*
diff --git a/tools/testing/selftests/filesystems/openat2/openat2_test.c b/tools/testing/selftests/filesystems/openat2/openat2_test.c
index 0e161ef9e9e4..c6c26652ac1b 100644
--- a/tools/testing/selftests/filesystems/openat2/openat2_test.c
+++ b/tools/testing/selftests/filesystems/openat2/openat2_test.c
@@ -83,14 +83,14 @@ void test_openat2_struct(void)
 		  .size = sizeof(struct open_how_ext), .err = -E2BIG },
 	};
 
-	BUILD_BUG_ON(ARRAY_LEN(misalignments) != NUM_OPENAT2_STRUCT_VARIATIONS);
-	BUILD_BUG_ON(ARRAY_LEN(tests) != NUM_OPENAT2_STRUCT_TESTS);
+	BUILD_BUG_ON(ARRAY_SIZE(misalignments) != NUM_OPENAT2_STRUCT_VARIATIONS);
+	BUILD_BUG_ON(ARRAY_SIZE(tests) != NUM_OPENAT2_STRUCT_TESTS);
 
-	for (int i = 0; i < ARRAY_LEN(tests); i++) {
+	for (int i = 0; i < ARRAY_SIZE(tests); i++) {
 		struct struct_test *test = &tests[i];
 		struct open_how_ext how_ext = test->arg;
 
-		for (int j = 0; j < ARRAY_LEN(misalignments); j++) {
+		for (int j = 0; j < ARRAY_SIZE(misalignments); j++) {
 			int fd, misalign = misalignments[j];
 			char *fdpath = NULL;
 			bool failed;
@@ -241,9 +241,9 @@ void test_openat2_flags(void)
 		  .how.resolve = 0, .err = -EINVAL },
 	};
 
-	BUILD_BUG_ON(ARRAY_LEN(tests) != NUM_OPENAT2_FLAG_TESTS);
+	BUILD_BUG_ON(ARRAY_SIZE(tests) != NUM_OPENAT2_FLAG_TESTS);
 
-	for (int i = 0; i < ARRAY_LEN(tests); i++) {
+	for (int i = 0; i < ARRAY_SIZE(tests); i++) {
 		int fd, fdflags = -1;
 		char *path, *fdpath = NULL;
 		bool failed = false;
diff --git a/tools/testing/selftests/filesystems/openat2/resolve_test.c b/tools/testing/selftests/filesystems/openat2/resolve_test.c
index a76ef15ceb90..f7acb4300641 100644
--- a/tools/testing/selftests/filesystems/openat2/resolve_test.c
+++ b/tools/testing/selftests/filesystems/openat2/resolve_test.c
@@ -436,9 +436,9 @@ void test_openat2_opath_tests(void)
 		  .out.err = -ELOOP,		.pass = false },
 	};
 
-	BUILD_BUG_ON(ARRAY_LEN(tests) != NUM_OPENAT2_OPATH_TESTS);
+	BUILD_BUG_ON(ARRAY_SIZE(tests) != NUM_OPENAT2_OPATH_TESTS);
 
-	for (int i = 0; i < ARRAY_LEN(tests); i++) {
+	for (int i = 0; i < ARRAY_SIZE(tests); i++) {
 		int dfd, fd;
 		char *fdpath = NULL;
 		bool failed;

-- 
2.53.0