12  * container_of - cast a member of a structure out to the containing structure
13  * @ptr:	the pointer to the member.
15  * @member:	the name of the member within the struct.
18 #define container_of(ptr, type, member) ({				\  argument
20 	_Static_assert(__same_type(*(ptr), ((type *)0)->member) ||	\
23 	((type *)(__mptr - offsetof(type, member))); })
156  * @member:	the name of the list_head within the struct.
158 #define list_entry(ptr, type, member) \  argument
159 	container_of(ptr, type, member)
165  * @member:	the name of the list_head within the struct.
169 #define list_first_entry(ptr, type, member) \  argument
170 	list_entry((ptr)->next, type, member)
175  * @member:	the name of the list_head within the struct.
177 #define list_next_entry(pos, member) \  argument
178 	list_entry((pos)->member.next, typeof(*(pos)), member)
184  * @member:	the name of the list_head within the struct.
186 #define list_entry_is_head(pos, head, member)				\  argument
187 	(&pos->member == (head))
193  * @member:	the name of the list_head within the struct.
195 #define list_for_each_entry(pos, head, member)				\  argument
196 	for (pos = list_first_entry(head, typeof(*pos), member);	\
197 	     !list_entry_is_head(pos, head, member);			\
198 	     pos = list_next_entry(pos, member))
205  * @member:	the name of the list_head within the struct.
207 #define list_for_each_entry_safe(pos, n, head, member)			\  argument
208 	for (pos = list_first_entry(head, typeof(*pos), member),	\
209 		n = list_next_entry(pos, member);			\
210 	     !list_entry_is_head(pos, head, member);			\
211 	     pos = n, n = list_next_entry(n, member))