--- zzzz-none-000/linux-3.10.107/include/linux/splice.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/include/linux/splice.h	2021-02-04 17:41:59.000000000 +0000
@@ -24,7 +24,8 @@
  * Passed to the actors
  */
 struct splice_desc {
-	unsigned int len, total_len;	/* current and remaining length */
+	size_t total_len;		/* remaining length */
+	unsigned int len;		/* current length */
 	unsigned int flags;		/* splice flags */
 	/*
 	 * actor() private data
@@ -69,16 +70,6 @@
 				splice_actor *);
 extern ssize_t __splice_from_pipe(struct pipe_inode_info *,
 				  struct splice_desc *, splice_actor *);
-extern int splice_from_pipe_feed(struct pipe_inode_info *, struct splice_desc *,
-				 splice_actor *);
-extern int splice_from_pipe_next(struct pipe_inode_info *,
-				 struct splice_desc *);
-extern void splice_from_pipe_begin(struct splice_desc *);
-extern void splice_from_pipe_end(struct pipe_inode_info *,
-				 struct splice_desc *);
-extern int pipe_to_file(struct pipe_inode_info *, struct pipe_buffer *,
-			struct splice_desc *);
-
 extern ssize_t splice_to_pipe(struct pipe_inode_info *,
 			      struct splice_pipe_desc *);
 extern ssize_t splice_direct_to_actor(struct file *, struct splice_desc *,