174 	struct frame spine[MAX_SPINE_DEPTH];  member
184 	*f = s->spine + s->top;  in top_frame()
231 		struct frame *f = s->spine + ++s->top;  in push_frame()
254 	struct frame *f = s->spine + s->top--;  in pop_frame()
265 		f = s->spine + s->top--;  in unlock_all_frames()
376 	struct ro_spine spine;  in dm_btree_lookup()  local
378 	init_ro_spine(&spine, info);  in dm_btree_lookup()
392 		r = btree_lookup_raw(&spine, root, keys[level],  in dm_btree_lookup()
398 				exit_ro_spine(&spine);  in dm_btree_lookup()
402 			exit_ro_spine(&spine);  in dm_btree_lookup()
408 	exit_ro_spine(&spine);  in dm_btree_lookup()
464 	struct ro_spine spine;  in dm_btree_lookup_next()  local
466 	init_ro_spine(&spine, info);  in dm_btree_lookup_next()
468 		r = btree_lookup_raw(&spine, root, keys[level],  in dm_btree_lookup_next()
484 	exit_ro_spine(&spine);  in dm_btree_lookup_next()
765 	struct shadow_spine spine;  in insert()  local
770 	init_shadow_spine(&spine, info);  in insert()
773 		r = btree_insert_raw(&spine, block, &le64_type, keys[level], &index);  in insert()
777 		n = dm_block_data(shadow_current(&spine));  in insert()
802 	r = btree_insert_raw(&spine, block, &info->value_type,  in insert()
807 	n = dm_block_data(shadow_current(&spine));  in insert()
836 	*new_root = shadow_root(&spine);  in insert()
837 	exit_shadow_spine(&spine);  in insert()
844 	exit_shadow_spine(&spine);  in insert()
904 	struct ro_spine spine;  in dm_btree_find_key()  local
906 	init_ro_spine(&spine, info);  in dm_btree_find_key()
908 		r = find_key(&spine, root, find_highest, result_keys + level,  in dm_btree_find_key()
919 	exit_ro_spine(&spine);  in dm_btree_find_key()