teach sendfile(2) to handle send-to-pipe directly
no point going through the intermediate pipe
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/internal.h b/fs/internal.h
index 77c50be..cff1f30 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -15,6 +15,7 @@ struct mount;
struct shrink_control;
struct fs_context;
struct user_namespace;
+struct pipe_inode_info;
/*
* block_dev.c
@@ -193,3 +194,11 @@ int sb_init_dio_done_wq(struct super_block *sb);
*/
int do_statx(int dfd, const char __user *filename, unsigned flags,
unsigned int mask, struct statx __user *buffer);
+
+/*
+ * fs/splice.c:
+ */
+long splice_file_to_pipe(struct file *in,
+ struct pipe_inode_info *opipe,
+ loff_t *offset,
+ size_t len, unsigned int flags);
