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>
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 15471a9..8176fbf 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 ed1ffa7..44c2e2a 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 47da8a4..2527cf0 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 13846f7..bea9f15 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 @@
};
/*
- * 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;