linux/stddef.h, linux/sizeof_field.h: Split sizeof_field() into a separate header

Include <linux/sizeof_field.h> from <linux/stddef.h> for compatibility.

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>

2 files changed, 16 insertions, 8 deletions

diff --git a/include/linux/sizeof_field.h b/include/linux/sizeof_field.h
new file mode 100644
index 000000000000..15dc10fce8f3
--- /dev/null
+++ b/include/linux/sizeof_field.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_SIZEOF_FIELD_H
+#define _LINUX_SIZEOF_FIELD_H
+
+
+/**
+ * sizeof_field() - Report the size of a struct field in bytes
+ *
+ * @T: The structure containing the field of interest
+ * @m: The field (member) to return the size of
+ */
+#define sizeof_field(T, m)  sizeof((((T *)0)->m))
+
+
+#endif  /* _LINUX_SIZEOF_FIELD_H */
diff --git a/include/linux/stddef.h b/include/linux/stddef.h
index 41217710788e..1be2c71c1e85 100644
--- a/include/linux/stddef.h
+++ b/include/linux/stddef.h
@@ -6,6 +6,7 @@
 #include <uapi/linux/stddef.h>
 
 #include <linux/offsetof.h>
+#include <linux/sizeof_field.h>
 
 
 #undef NULL
@@ -17,14 +18,6 @@ enum {
 };
 
 /**
- * sizeof_field() - Report the size of a struct field in bytes
- *
- * @TYPE: The structure containing the field of interest
- * @MEMBER: The field to return the size of
- */
-#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
-
-/**
  * offsetofend() - Report the offset of a struct field within the struct
  *
  * @TYPE: The type of the structure