266  * flex_array_size() - Calculate size of a flexible array member
269  * @member: Name of the flexible array member.
272  * Calculates size of a flexible array of @count number of @member
277 #define flex_array_size(p, member, count)				\  argument
279 		(count) * sizeof(*(p)->member) + __must_be_array((p)->member),	\
280 		size_mul(count, sizeof(*(p)->member) + __must_be_array((p)->member)))
285  * @member: Name of the array member.
289  * array of @count number of @member elements.
293 #define struct_size(p, member, count)					\  argument
295 		sizeof(*(p)) + flex_array_size(p, member, count),	\
296 		size_add(sizeof(*(p)), flex_array_size(p, member, count)))
301  * @member: Name of the array member.
305  * array of @count number of @member elements. Prefer using struct_size()
311 #define struct_size_t(type, member, count)					\  argument
312 	struct_size((type *)NULL, member, count)
320  * @member: Name of the array member.
324 #define _DEFINE_FLEX(type, name, member, count, initializer)			\  argument
328 		u8 bytes[struct_size_t(type, member, count)];			\
335  * flexible array member.
339  * @member: Name of the array member.
343  * flexible array member.
346 #define DEFINE_FLEX(type, name, member, count)			\  argument
347 	_DEFINE_FLEX(type, name, member, count, = {})