64 #define offsetof(type, member) ((long) &((type *) 0)->member)  argument
67 #define dl_list_entry(item, type, member) \  argument
68 	((type *) ((char *) item - offsetof(type, member)))
70 #define dl_list_first(list, type, member) \  argument
72 	 dl_list_entry((list)->next, type, member))
74 #define dl_list_last(list, type, member) \  argument
76 	 dl_list_entry((list)->prev, type, member))
78 #define dl_list_for_each(item, list, type, member) \  argument
79 	for (item = dl_list_entry((list)->next, type, member); \
80 	     &item->member != (list); \
81 	     item = dl_list_entry(item->member.next, type, member))
83 #define dl_list_for_each_safe(item, n, list, type, member) \  argument
84 	for (item = dl_list_entry((list)->next, type, member), \
85 		     n = dl_list_entry(item->member.next, type, member); \
86 	     &item->member != (list); \
87 	     item = n, n = dl_list_entry(n->member.next, type, member))
89 #define dl_list_for_each_reverse(item, list, type, member) \  argument
90 	for (item = dl_list_entry((list)->prev, type, member); \
91 	     &item->member != (list); \
92 	     item = dl_list_entry(item->member.prev, type, member))