ovl: do not cleanup directory and whiteout index entries

	if (!d_inode(index))

		return 0;

	err = -EISDIR;

	if (d_is_dir(index))

	/*

	 * Directory index entries are going to be used for looking up

	 * redirected upper dirs by lower dir fh when decoding an overlay

	 * file handle of a merge dir. Whiteout index entries are going to be

	 * used as an indication that an exported overlay file handle should

	 * be treated as stale (i.e. after unlink of the overlay inode).

	 * We don't know the verification rules for directory and whiteout

	 * index entries, because they have not been implemented yet, so return

	 * EROFS if those entries are found to avoid corrupting an index that

	 * was created by a newer kernel.

	 */

	err = -EROFS;

	if (d_is_dir(index) || ovl_is_whiteout(index))

		goto fail;

	err = -EINVAL;

	return err;

fail:

	pr_warn_ratelimited("overlayfs: failed to verify index (%pd2, err=%i)\n",

			    index, err);

	pr_warn_ratelimited("overlayfs: failed to verify index (%pd2, ftype=%x, err=%i)\n",

			    index, d_inode(index)->i_mode & S_IFMT, err);

	goto out;

}

			err = PTR_ERR(index);

			break;

		}

		if (ovl_verify_index(index, lowerstack, numlower)) {

		err = ovl_verify_index(index, lowerstack, numlower);

		if (err) {

			if (err == -EROFS)

				break;

			err = ovl_cleanup(dir, index);

			if (err)

				break;