13  * container_of - cast a member of a structure out to the containing structure
14  * @ptr:	the pointer to the member.
16  * @member:	the name of the member within the struct.
19 #define container_of(ptr, type, member) ({				\  argument
21 	_Static_assert(__same_type(*(ptr), ((type *)0)->member) ||	\
24 	((type *)(__mptr - offsetof(type, member))); })
226  * @member:	the name of the list_head within the struct.
228 #define list_entry(ptr, type, member) \  argument
229 	container_of(ptr, type, member)
235  * @member:	the name of the list_head within the struct.
239 #define list_first_entry(ptr, type, member) \  argument
240 	list_entry((ptr)->next, type, member)
246  * @member:	the name of the list_head within the struct.
250 #define list_last_entry(ptr, type, member) \  argument
251 	list_entry((ptr)->prev, type, member)
256  * @member:	the name of the list_head within the struct.
258 #define list_next_entry(pos, member) \  argument
259 	list_entry((pos)->member.next, typeof(*(pos)), member)
264  * @member:	the name of the list_head within the struct.
266 #define list_prev_entry(pos, member) \  argument
267 	list_entry((pos)->member.prev, typeof(*(pos)), member)
273  * @member:	the name of the list_head within the struct.
275 #define list_entry_is_head(pos, head, member)				\  argument
276 	(&pos->member == (head))
282  * @member:	the name of the list_head within the struct.
284 #define list_for_each_entry(pos, head, member)				\  argument
285 	for (pos = list_first_entry(head, typeof(*pos), member);	\
286 	     !list_entry_is_head(pos, head, member);			\
287 	     pos = list_next_entry(pos, member))
293  * @member:	the name of the list_head within the struct.
295 #define list_for_each_entry_reverse(pos, head, member)			\  argument
296 	for (pos = list_last_entry(head, typeof(*pos), member);		\
297 	     !list_entry_is_head(pos, head, member); 			\
298 	     pos = list_prev_entry(pos, member))
305  * @member:	the name of the list_head within the struct.
307 #define list_for_each_entry_safe(pos, n, head, member)			\  argument
308 	for (pos = list_first_entry(head, typeof(*pos), member),	\
309 		n = list_next_entry(pos, member);			\
310 	     !list_entry_is_head(pos, head, member);			\
311 	     pos = n, n = list_next_entry(n, member))
398 #define hlist_entry(ptr, type, member) container_of(ptr, type, member)  argument
400 #define hlist_entry_safe(ptr, type, member) \  argument
402 	   ____ptr ? hlist_entry(____ptr, type, member) : NULL; \
409  * @member:	the name of the hlist_node within the struct.
411 #define hlist_for_each_entry(pos, head, member)				\  argument
412 	for (pos = hlist_entry_safe((head)->first, typeof(*(pos)), member);\
414 	     pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
421  * @member:	the name of the hlist_node within the struct.
423 #define hlist_for_each_entry_safe(pos, n, head, member) 		\  argument
424 	for (pos = hlist_entry_safe((head)->first, typeof(*pos), member);\
425 	     pos && ({ n = pos->member.next; 1; });			\
426 	     pos = hlist_entry_safe(n, typeof(*pos), member))