886 	struct extent_buffer *right = NULL;  in balance_level()  local
976 	right = btrfs_read_node_slot(parent, pslot + 1);  in balance_level()
977 	if (IS_ERR(right))  in balance_level()
978 		right = NULL;  in balance_level()
980 	if (right) {  in balance_level()
981 		__btrfs_tree_lock(right, BTRFS_NESTING_RIGHT);  in balance_level()
982 		wret = btrfs_cow_block(trans, root, right,  in balance_level()
983 				       parent, pslot + 1, &right,  in balance_level()
1002 	if (right) {  in balance_level()
1003 		wret = push_node_left(trans, mid, right, 1);  in balance_level()
1006 		if (btrfs_header_nritems(right) == 0) {  in balance_level()
1007 			btrfs_clean_tree_block(right);  in balance_level()
1008 			btrfs_tree_unlock(right);  in balance_level()
1010 			root_sub_used(root, right->len);  in balance_level()
1011 			btrfs_free_tree_block(trans, btrfs_root_id(root), right,  in balance_level()
1013 			free_extent_buffer_stale(right);  in balance_level()
1014 			right = NULL;  in balance_level()
1017 			btrfs_node_key(right, &right_key, 0);  in balance_level()
1093 	if (right) {  in balance_level()
1094 		btrfs_tree_unlock(right);  in balance_level()
1095 		free_extent_buffer(right);  in balance_level()
1114 	struct extent_buffer *right = NULL;  in push_nodes_for_insert()  local
1189 	right = btrfs_read_node_slot(parent, pslot + 1);  in push_nodes_for_insert()
1190 	if (IS_ERR(right))  in push_nodes_for_insert()
1191 		right = NULL;  in push_nodes_for_insert()
1196 	if (right) {  in push_nodes_for_insert()
1199 		__btrfs_tree_lock(right, BTRFS_NESTING_RIGHT);  in push_nodes_for_insert()
1201 		right_nr = btrfs_header_nritems(right);  in push_nodes_for_insert()
1205 			ret = btrfs_cow_block(trans, root, right,  in push_nodes_for_insert()
1207 					      &right, BTRFS_NESTING_RIGHT_COW);  in push_nodes_for_insert()
1211 				wret = balance_node_right(trans, right, mid);  in push_nodes_for_insert()
1219 			btrfs_node_key(right, &disk_key, 0);  in push_nodes_for_insert()
1227 				path->nodes[level] = right;  in push_nodes_for_insert()
1234 				btrfs_tree_unlock(right);  in push_nodes_for_insert()
1235 				free_extent_buffer(right);  in push_nodes_for_insert()
1239 		btrfs_tree_unlock(right);  in push_nodes_for_insert()
1240 		free_extent_buffer(right);  in push_nodes_for_insert()
2501 			       struct extent_buffer *right)  in check_sibling_keys()  argument
2507 	int nr_right = btrfs_header_nritems(right);  in check_sibling_keys()
2515 		btrfs_node_key_to_cpu(right, &right_first, 0);  in check_sibling_keys()
2518 		btrfs_item_key_to_cpu(right, &right_first, 0);  in check_sibling_keys()
2930 				      struct extent_buffer *right,  in __push_leaf_right()  argument
2934 	struct btrfs_fs_info *fs_info = right->fs_info;  in __push_leaf_right()
2991 	right_nritems = btrfs_header_nritems(right);  in __push_leaf_right()
2997 	data_end = leaf_data_end(right);  in __push_leaf_right()
2998 	memmove_extent_buffer(right,  in __push_leaf_right()
3004 	copy_extent_buffer(right, left, BTRFS_LEAF_DATA_OFFSET +  in __push_leaf_right()
3009 	memmove_extent_buffer(right, btrfs_item_nr_offset(push_items),  in __push_leaf_right()
3014 	copy_extent_buffer(right, left, btrfs_item_nr_offset(0),  in __push_leaf_right()
3019 	btrfs_init_map_token(&token, right);  in __push_leaf_right()
3021 	btrfs_set_header_nritems(right, right_nritems);  in __push_leaf_right()
3036 	btrfs_mark_buffer_dirty(right);  in __push_leaf_right()
3038 	btrfs_item_key(right, &disk_key, 0);  in __push_leaf_right()
3049 		path->nodes[0] = right;  in __push_leaf_right()
3052 		btrfs_tree_unlock(right);  in __push_leaf_right()
3053 		free_extent_buffer(right);  in __push_leaf_right()
3058 	btrfs_tree_unlock(right);  in __push_leaf_right()
3059 	free_extent_buffer(right);  in __push_leaf_right()
3079 	struct extent_buffer *right;  in push_leaf_right()  local
3096 	right = btrfs_read_node_slot(upper, slot + 1);  in push_leaf_right()
3101 	if (IS_ERR(right))  in push_leaf_right()
3104 	__btrfs_tree_lock(right, BTRFS_NESTING_RIGHT);  in push_leaf_right()
3106 	free_space = btrfs_leaf_free_space(right);  in push_leaf_right()
3110 	ret = btrfs_cow_block(trans, root, right, upper,  in push_leaf_right()
3111 			      slot + 1, &right, BTRFS_NESTING_RIGHT_COW);  in push_leaf_right()
3119 	if (check_sibling_keys(left, right)) {  in push_leaf_right()
3121 		btrfs_tree_unlock(right);  in push_leaf_right()
3122 		free_extent_buffer(right);  in push_leaf_right()
3132 		path->nodes[0] = right;  in push_leaf_right()
3139 				right, free_space, left_nritems, min_slot);  in push_leaf_right()
3141 	btrfs_tree_unlock(right);  in push_leaf_right()
3142 	free_extent_buffer(right);  in push_leaf_right()
3161 	struct extent_buffer *right = path->nodes[0];  in __push_leaf_left()  local
3182 				int space = btrfs_leaf_free_space(right);  in __push_leaf_left()
3192 		this_item_size = btrfs_item_size(right, i);  in __push_leaf_left()
3205 	WARN_ON(!empty && push_items == btrfs_header_nritems(right));  in __push_leaf_left()
3208 	copy_extent_buffer(left, right,  in __push_leaf_left()
3214 		     btrfs_item_offset(right, push_items - 1);  in __push_leaf_left()
3216 	copy_extent_buffer(left, right, BTRFS_LEAF_DATA_OFFSET +  in __push_leaf_left()
3219 		     btrfs_item_offset(right, push_items - 1),  in __push_leaf_left()
3241 		push_space = btrfs_item_offset(right, push_items - 1) -  in __push_leaf_left()
3242 						  leaf_data_end(right);  in __push_leaf_left()
3243 		memmove_extent_buffer(right, BTRFS_LEAF_DATA_OFFSET +  in __push_leaf_left()
3246 				      leaf_data_end(right), push_space);  in __push_leaf_left()
3248 		memmove_extent_buffer(right, btrfs_item_nr_offset(0),  in __push_leaf_left()
3250 			     (btrfs_header_nritems(right) - push_items) *  in __push_leaf_left()
3254 	btrfs_init_map_token(&token, right);  in __push_leaf_left()
3256 	btrfs_set_header_nritems(right, right_nritems);  in __push_leaf_left()
3265 		btrfs_mark_buffer_dirty(right);  in __push_leaf_left()
3267 		btrfs_clean_tree_block(right);  in __push_leaf_left()
3269 	btrfs_item_key(right, &disk_key, 0);  in __push_leaf_left()
3304 	struct extent_buffer *right = path->nodes[0];  in push_leaf_left()  local
3317 	right_nritems = btrfs_header_nritems(right);  in push_leaf_left()
3349 	if (check_sibling_keys(left, right)) {  in push_leaf_left()
3369 				    struct extent_buffer *right,  in copy_for_split()  argument
3380 	btrfs_set_header_nritems(right, nritems);  in copy_for_split()
3383 	copy_extent_buffer(right, l, btrfs_item_nr_offset(0),  in copy_for_split()
3387 	copy_extent_buffer(right, l,  in copy_for_split()
3394 	btrfs_init_map_token(&token, right);  in copy_for_split()
3403 	btrfs_item_key(right, &disk_key, 0);  in copy_for_split()
3404 	insert_ptr(trans, path, &disk_key, right->start, path->slots[1] + 1, 1);  in copy_for_split()
3406 	btrfs_mark_buffer_dirty(right);  in copy_for_split()
3413 		path->nodes[0] = right;  in copy_for_split()
3417 		btrfs_tree_unlock(right);  in copy_for_split()
3418 		free_extent_buffer(right);  in copy_for_split()
3505 	struct extent_buffer *right;  in split_leaf()  local
3608 	right = btrfs_alloc_tree_block(trans, root, 0, root->root_key.objectid,  in split_leaf()
3612 	if (IS_ERR(right))  in split_leaf()
3613 		return PTR_ERR(right);  in split_leaf()
3619 			btrfs_set_header_nritems(right, 0);  in split_leaf()
3621 				   right->start, path->slots[1] + 1, 1);  in split_leaf()
3624 			path->nodes[0] = right;  in split_leaf()
3628 			btrfs_set_header_nritems(right, 0);  in split_leaf()
3630 				   right->start, path->slots[1], 1);  in split_leaf()
3633 			path->nodes[0] = right;  in split_leaf()
3646 	copy_for_split(trans, path, l, right, slot, mid, nritems);  in split_leaf()