645 static int split_one_into_two(struct shadow_spine *s, unsigned parent_index,  in split_one_into_two()  argument
674 	r = insert_at(sizeof(__le64), pn, parent_index + 1,  in split_one_into_two()
728 static int split_two_into_three(struct shadow_spine *s, unsigned parent_index,  in split_two_into_three()  argument
740 	if (parent_index == 0) {  in split_two_into_three()
743 		r = shadow_child(s->info, vt, pn, parent_index + 1, &right);  in split_two_into_three()
747 		middle_index = parent_index;  in split_two_into_three()
749 		r = shadow_child(s->info, vt, pn, parent_index - 1, &left);  in split_two_into_three()
907 			  unsigned parent_index, uint64_t key)  in rebalance_left()  argument
913 	r = shadow_child(s->info, vt, parent, parent_index - 1, &sib);  in rebalance_left()
920 	*key_ptr(parent, parent_index) = right->keys[0];  in rebalance_left()
936 			   unsigned parent_index, uint64_t key)  in rebalance_right()  argument
942 	r = shadow_child(s->info, vt, parent, parent_index + 1, &sib);  in rebalance_right()
949 	*key_ptr(parent, parent_index + 1) = right->keys[0];  in rebalance_right()
993 			      unsigned parent_index, uint64_t key)  in rebalance_or_split()  argument
1002 	if (parent_index > 0) {  in rebalance_or_split()
1003 		dm_block_t left_b = value64(parent, parent_index - 1);  in rebalance_or_split()
1014 				return rebalance_left(s, vt, parent_index, key);  in rebalance_or_split()
1019 	if (parent_index < (nr_parent - 1)) {  in rebalance_or_split()
1020 		dm_block_t right_b = value64(parent, parent_index + 1);  in rebalance_or_split()
1031 				return rebalance_right(s, vt, parent_index, key);  in rebalance_or_split()
1042 	    (parent_index == 0) || (parent_index + 1 == nr_parent)) {  in rebalance_or_split()
1043 		return split_one_into_two(s, parent_index, vt, key);  in rebalance_or_split()
1045 		return split_two_into_three(s, parent_index, vt, key);  in rebalance_or_split()