643 static int split_one_into_two(struct shadow_spine *s, unsigned parent_index,  in split_one_into_two()  argument
672 	r = insert_at(sizeof(__le64), pn, parent_index + 1,  in split_one_into_two()
726 static int split_two_into_three(struct shadow_spine *s, unsigned parent_index,  in split_two_into_three()  argument
738 	if (parent_index == 0) {  in split_two_into_three()
741 		r = shadow_child(s->info, vt, pn, parent_index + 1, &right);  in split_two_into_three()
745 		middle_index = parent_index;  in split_two_into_three()
747 		r = shadow_child(s->info, vt, pn, parent_index - 1, &left);  in split_two_into_three()
905 			  unsigned parent_index, uint64_t key)  in rebalance_left()  argument
911 	r = shadow_child(s->info, vt, parent, parent_index - 1, &sib);  in rebalance_left()
918 	*key_ptr(parent, parent_index) = right->keys[0];  in rebalance_left()
934 			   unsigned parent_index, uint64_t key)  in rebalance_right()  argument
940 	r = shadow_child(s->info, vt, parent, parent_index + 1, &sib);  in rebalance_right()
947 	*key_ptr(parent, parent_index + 1) = right->keys[0];  in rebalance_right()
991 			      unsigned parent_index, uint64_t key)  in rebalance_or_split()  argument
1000 	if (parent_index > 0) {  in rebalance_or_split()
1001 		dm_block_t left_b = value64(parent, parent_index - 1);  in rebalance_or_split()
1012 				return rebalance_left(s, vt, parent_index, key);  in rebalance_or_split()
1017 	if (parent_index < (nr_parent - 1)) {  in rebalance_or_split()
1018 		dm_block_t right_b = value64(parent, parent_index + 1);  in rebalance_or_split()
1029 				return rebalance_right(s, vt, parent_index, key);  in rebalance_or_split()
1040 	    (parent_index == 0) || (parent_index + 1 == nr_parent)) {  in rebalance_or_split()
1041 		return split_one_into_two(s, parent_index, vt, key);  in rebalance_or_split()
1043 		return split_two_into_three(s, parent_index, vt, key);  in rebalance_or_split()