[PATCH v2 1/4] array_size.h: Add ARRAY_END()

[Alejandro Colomar]

ARRAY_END() returns a pointer one past the end of the last element in
the array argument.  This pointer is useful for iterating over the
elements of an array:

	for (T *p = a, p < ENDOF(a); p++)
		...

Cc: Kees Cook <kees@xxxxxxxxxx>
Cc: Christopher Bazley <chris.bazley.wg14@xxxxxxxxx>
Cc: Rasmus Villemoes <linux@xxxxxxxxxxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Alejandro Colomar <alx@xxxxxxxxxx>
Message-ID: <37b1088dbd01a21d2f9d460aa510726119b3bcb0.1752193588.git.alx@xxxxxxxxxx>
---
 include/linux/array_size.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/array_size.h b/include/linux/array_size.h
index 06d7d83196ca..62382973078e 100644
--- a/include/linux/array_size.h
+++ b/include/linux/array_size.h
@@ -10,4 +10,10 @@
  */
 #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))
 
+/**
+ * ARRAY_END - get a pointer to one past the last element in array @a
+ * @a: array
+ */
+#define ARRAY_END(a)  (a + ARRAY_SIZE(a))
+
 #endif  /* _LINUX_ARRAY_SIZE_H */
-- 
2.51.0