100 		   unsigned long *key);
115 			      unsigned long *key, void *val, gfp_t gfp);
128 		 unsigned long *key, void *val);
140 		   unsigned long *key);
172 		 unsigned long *key);
186 		     unsigned long *key);
193 				  unsigned long *key, size_t index,
201 				       unsigned long *key,
215 #define btree_for_each_safel(head, key, val)	\  argument
216 	for (val = btree_lastl(head, &key);	\
218 	     val = btree_get_prevl(head, &key))
226 #define btree_for_each_safe32(head, key, val)	\  argument
227 	for (val = btree_last32(head, &key);	\
229 	     val = btree_get_prev32(head, &key))
238 #define btree_for_each_safe64(head, key, val)	\  argument
239 	for (val = btree_last64(head, &key);	\
241 	     val = btree_get_prev64(head, &key))