91 #define list_entry(ptr, type, member) \  argument
92     ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
94 #define list_first_entry(ptr, type, member) \  argument
95         list_entry((ptr)->next, type, member)
97 #define list_last_entry(ptr, type, member) \  argument
98         list_entry((ptr)->prev, type, member)
100 #define list_first_entry_or_null(ptr, type, member) ({ \  argument
103         pos__ != head__ ? list_entry(pos__, type, member) : NULL; \
106 #define list_next_entry(pos, type, member) \  argument
107         list_entry((pos)->member.next, type, member)
109 #define list_prev_entry(pos, type, member) \  argument
110         list_entry((pos)->member.prev, type, member)
112 #define list_for_each_entry(pos, head, type, member) \  argument
113     for (pos = list_entry((head)->next, type, member); \
114          &pos->member != (head); \
115          pos = list_next_entry(pos, type, member))
117 #define list_for_each_entry_safe(pos, n, head, type, member) \  argument
118     for (pos = list_first_entry(head, type, member),  \
119          n = list_next_entry(pos, type, member); \
120          &pos->member != (head);                    \
121          pos = n, n = list_next_entry(n, type, member))
123 #define list_for_each_entry_reverse(pos, head, type, member) \  argument
124     for (pos = list_last_entry(head, type, member); \
125          &pos->member != (head); \
126          pos = list_prev_entry(pos, type, member))
128 #define list_for_each_entry_safe_reverse(pos, n, head, type, member) \  argument
129     for (pos = list_last_entry(head, type, member),  \
130          n = list_prev_entry(pos, type, member); \
131          &pos->member != (head);                    \
132          pos = n, n = list_prev_entry(n, type, member))