btrfs_unlink_inode
int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
ret = btrfs_unlink_inode(trans, BTRFS_I(dir), BTRFS_I(d_inode(dentry)),
ret = btrfs_unlink_inode(trans, dir, inode, &fname.disk_name);
ret = btrfs_unlink_inode(trans, BTRFS_I(new_dir),
ret = btrfs_unlink_inode(trans, dir, inode, name);