176 	struct frame spine[MAX_SPINE_DEPTH];  member
186 	*f = s->spine + s->top;  in top_frame()
233 		struct frame *f = s->spine + ++s->top;  in push_frame()
256 	struct frame *f = s->spine + s->top--;  in pop_frame()
267 		f = s->spine + s->top--;  in unlock_all_frames()
384 	struct ro_spine spine;  in dm_btree_lookup()  local
386 	init_ro_spine(&spine, info);  in dm_btree_lookup()
400 		r = btree_lookup_raw(&spine, root, keys[level],  in dm_btree_lookup()
406 				exit_ro_spine(&spine);  in dm_btree_lookup()
410 			exit_ro_spine(&spine);  in dm_btree_lookup()
416 	exit_ro_spine(&spine);  in dm_btree_lookup()
479 	struct ro_spine spine;  in dm_btree_lookup_next()  local
481 	init_ro_spine(&spine, info);  in dm_btree_lookup_next()
483 		r = btree_lookup_raw(&spine, root, keys[level],  in dm_btree_lookup_next()
499 	exit_ro_spine(&spine);  in dm_btree_lookup_next()
773 	struct shadow_spine spine;  in insert()  local
778 	init_shadow_spine(&spine, info);  in insert()
781 		r = btree_insert_raw(&spine, block, &le64_type, keys[level], &index);  in insert()
785 		n = dm_block_data(shadow_current(&spine));  in insert()
808 	r = btree_insert_raw(&spine, block, &info->value_type,  in insert()
813 	n = dm_block_data(shadow_current(&spine));  in insert()
840 	*new_root = shadow_root(&spine);  in insert()
841 	exit_shadow_spine(&spine);  in insert()
848 	exit_shadow_spine(&spine);  in insert()
912 	struct ro_spine spine;  in dm_btree_find_key()  local
914 	init_ro_spine(&spine, info);  in dm_btree_find_key()
916 		r = find_key(&spine, root, find_highest, result_keys + level,  in dm_btree_find_key()
927 	exit_ro_spine(&spine);  in dm_btree_find_key()