fuse add copy_file_range to direct io fops

Nothing preventing copy_file_range to work on files opened with
FOPEN_DIRECT_IO.

Fixes: 88bc7d50 ("fuse: add support for copy_file_range()")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>

fs/fuse/file.c

@@ -3181,6 +3181,7 @@ static const struct file_operations fuse_direct_io_file_operations = {
 	.compat_ioctl	= fuse_file_compat_ioctl,
 	.poll		= fuse_file_poll,
 	.fallocate	= fuse_file_fallocate,
+	.copy_file_range = fuse_copy_file_range,
 };
 
 static const struct address_space_operations fuse_file_aops  = {