btrfs_insert_item
ret = btrfs_insert_item(trans, root, &key, &bgi, size);
int btrfs_insert_item(struct btrfs_trans_handle *trans, struct btrfs_root *root,
ret = btrfs_insert_item(trans, stripe_root, &stripe_key, stripe_extent,
return btrfs_insert_item(trans, stripe_root, &newkey, newitem, item_size);
return btrfs_insert_item(trans, root, key, item, sizeof(*item));
ret = btrfs_insert_item(trans, chunk_root, &key, chunk, item_size);