654 static int split_one_into_two(struct shadow_spine *s, unsigned int parent_index,  in split_one_into_two()  argument
683 	r = insert_at(sizeof(__le64), pn, parent_index + 1,  in split_one_into_two()
737 static int split_two_into_three(struct shadow_spine *s, unsigned int parent_index,  in split_two_into_three()  argument
749 	if (parent_index == 0) {  in split_two_into_three()
752 		r = shadow_child(s->info, vt, pn, parent_index + 1, &right);  in split_two_into_three()
756 		middle_index = parent_index;  in split_two_into_three()
758 		r = shadow_child(s->info, vt, pn, parent_index - 1, &left);  in split_two_into_three()
916 			  unsigned int parent_index, uint64_t key)  in rebalance_left()  argument
922 	r = shadow_child(s->info, vt, parent, parent_index - 1, &sib);  in rebalance_left()
929 	*key_ptr(parent, parent_index) = right->keys[0];  in rebalance_left()
945 			   unsigned int parent_index, uint64_t key)  in rebalance_right()  argument
951 	r = shadow_child(s->info, vt, parent, parent_index + 1, &sib);  in rebalance_right()
958 	*key_ptr(parent, parent_index + 1) = right->keys[0];  in rebalance_right()
1002 			      unsigned int parent_index, uint64_t key)  in rebalance_or_split()  argument
1011 	if (parent_index > 0) {  in rebalance_or_split()
1012 		dm_block_t left_b = value64(parent, parent_index - 1);  in rebalance_or_split()
1024 				return rebalance_left(s, vt, parent_index, key);  in rebalance_or_split()
1029 	if (parent_index < (nr_parent - 1)) {  in rebalance_or_split()
1030 		dm_block_t right_b = value64(parent, parent_index + 1);  in rebalance_or_split()
1042 				return rebalance_right(s, vt, parent_index, key);  in rebalance_or_split()
1053 	    (parent_index == 0) || (parent_index + 1 == nr_parent)) {  in rebalance_or_split()
1054 		return split_one_into_two(s, parent_index, vt, key);  in rebalance_or_split()
1056 		return split_two_into_three(s, parent_index, vt, key);  in rebalance_or_split()