static int ext4_rename2(struct inode *old_dir, struct dentry *old_dentry,
			struct inode *new_dir, struct dentry *new_dentry,
			unsigned int flags)
{
	int err;

	if (unlikely(ext4_forced_shutdown(EXT4_SB(old_dir->i_sb))))
		return -EIO;

	if (flags & ~(RENAME_NOREPLACE | RENAME_EXCHANGE | RENAME_WHITEOUT))
		return -EINVAL;

	err = fscrypt_prepare_rename(old_dir, old_dentry, new_dir, new_dentry,
				     flags);
	if (err)
		return err;

	if (flags & RENAME_EXCHANGE) {
		return ext4_cross_rename(old_dir, old_dentry,
					 new_dir, new_dentry);
	}

	return ext4_rename(old_dir, old_dentry, new_dir, new_dentry, flags);
}