nilfs2_direct_IO(): remove dead code

static ssize_t

nilfs_direct_IO(struct kiocb *iocb, struct iov_iter *iter, loff_t offset)

{

	struct file *file = iocb->ki_filp;

	struct address_space *mapping = file->f_mapping;

	struct inode *inode = file->f_mapping->host;

	size_t count = iov_iter_count(iter);

	ssize_t size;

	struct inode *inode = file_inode(iocb->ki_filp);

	if (iov_iter_rw(iter) == WRITE)

		return 0;

	/* Needs synchronization with the cleaner */

	size = blockdev_direct_IO(iocb, inode, iter, offset, nilfs_get_block);

	/*

	 * In case of error extending write may have instantiated a few

	 * blocks outside i_size. Trim these off again.

	 */

	if (unlikely(iov_iter_rw(iter) == WRITE && size < 0)) {

		loff_t isize = i_size_read(inode);

		loff_t end = offset + count;

		if (end > isize)

			nilfs_write_failed(mapping, end);

	}

	return size;

	return blockdev_direct_IO(iocb, inode, iter, offset, nilfs_get_block);

}

const struct address_space_operations nilfs_aops = {