switch simple generic_file_aio_read() users to ->read_iter()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ext2/file.c

@@ -62,9 +62,9 @@ int ext2_fsync(struct file *file, loff_t start, loff_t end, int datasync)
  */
 const struct file_operations ext2_file_operations = {
 	.llseek		= generic_file_llseek,
-	.read		= do_sync_read,
+	.read		= new_sync_read,
 	.write		= do_sync_write,
-	.aio_read	= generic_file_aio_read,
+	.read_iter	= generic_file_read_iter,
 	.aio_write	= generic_file_aio_write,
 	.unlocked_ioctl = ext2_ioctl,
 #ifdef CONFIG_COMPAT