From d6b29d7cee064f28ca097e906de7453541351095 Mon Sep 17 00:00:00 2001
From: Jens Axboe <jens.axboe@oracle.com>
Date: Mon, 4 Jun 2007 09:59:47 +0200
Subject: splice: divorce the splice structure/function definitions from the
 pipe header

We need to move even more stuff into the header so that folks can use
the splice_to_pipe() implementation instead of open-coding a lot of
pipe knowledge (see relay implementation), so move to our own header
file finally.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---
 fs/nfsd/vfs.c   |  2 +-
 fs/ocfs2/file.c |  2 +-
 fs/read_write.c |  2 +-
 fs/splice.c     | 26 +++++---------------------
 4 files changed, 8 insertions(+), 24 deletions(-)

(limited to 'fs')

diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 15471a9efe0..8176fbf5c00 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -23,7 +23,7 @@
 #include <linux/file.h>
 #include <linux/mount.h>
 #include <linux/major.h>
-#include <linux/pipe_fs_i.h>
+#include <linux/splice.h>
 #include <linux/proc_fs.h>
 #include <linux/stat.h>
 #include <linux/fcntl.h>
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index ed1ffa70cc3..44c2e2afa46 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -31,7 +31,7 @@
 #include <linux/pagemap.h>
 #include <linux/uio.h>
 #include <linux/sched.h>
-#include <linux/pipe_fs_i.h>
+#include <linux/splice.h>
 #include <linux/mount.h>
 #include <linux/writeback.h>
 
diff --git a/fs/read_write.c b/fs/read_write.c
index 47da8a4a0fb..2527cf035b0 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -15,7 +15,7 @@
 #include <linux/module.h>
 #include <linux/syscalls.h>
 #include <linux/pagemap.h>
-#include <linux/pipe_fs_i.h>
+#include <linux/splice.h>
 #include "read_write.h"
 
 #include <asm/uaccess.h>
diff --git a/fs/splice.c b/fs/splice.c
index 13846f723d7..bea9f1581ca 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -20,7 +20,7 @@
 #include <linux/fs.h>
 #include <linux/file.h>
 #include <linux/pagemap.h>
-#include <linux/pipe_fs_i.h>
+#include <linux/splice.h>
 #include <linux/mm_inline.h>
 #include <linux/swap.h>
 #include <linux/writeback.h>
@@ -29,22 +29,6 @@
 #include <linux/syscalls.h>
 #include <linux/uio.h>
 
-struct partial_page {
-	unsigned int offset;
-	unsigned int len;
-};
-
-/*
- * Passed to splice_to_pipe
- */
-struct splice_pipe_desc {
-	struct page **pages;		/* page map */
-	struct partial_page *partial;	/* pages[] may not be contig */
-	int nr_pages;			/* number of pages in map */
-	unsigned int flags;		/* splice flags */
-	const struct pipe_buf_operations *ops;/* ops associated with output pipe */
-};
-
 /*
  * Attempt to steal a page from a pipe buffer. This should perhaps go into
  * a vm helper function, it's already simplified quite a bit by the
@@ -170,11 +154,11 @@ static const struct pipe_buf_operations user_page_pipe_buf_ops = {
 };
 
 /*
- * Pipe output worker. This sets up our pipe format with the page cache
- * pipe buffer operations. Otherwise very similar to the regular pipe_writev().
+ * Pipe output worker. This fills a pipe with the information contained
+ * from splice_pipe_desc().
  */
-static ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
-			      struct splice_pipe_desc *spd)
+ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
+		       struct splice_pipe_desc *spd)
 {
 	unsigned int spd_pages = spd->nr_pages;
 	int ret, do_wakeup, page_nr;
-- 
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