Export __splice_from_pipe()

Ocfs2 wants to implement it's own splice write actor so that it can better
manage cluster / page locks. This lets us re-use the rest of splice write
while only providing our own code where it's actually important.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

2 files changed, 8 insertions, 3 deletions

diff --git a/fs/splice.c b/fs/splice.c
index ae50208e3e6c..07f6556add0a 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -651,9 +651,9 @@ out_ret:
  * key here is the 'actor' worker passed in that actually moves the data
  * to the wanted destination. See pipe_to_file/pipe_to_sendpage above.
  */
-static ssize_t __splice_from_pipe(struct pipe_inode_info *pipe,
-                                  struct file *out, loff_t *ppos, size_t len,
-                                  unsigned int flags, splice_actor *actor)
+ssize_t __splice_from_pipe(struct pipe_inode_info *pipe,
+                           struct file *out, loff_t *ppos, size_t len,
+                           unsigned int flags, splice_actor *actor)
 {
         int ret, do_wakeup, err;
         struct splice_desc sd;
@@ -747,6 +747,7 @@ static ssize_t __splice_from_pipe(struct pipe_inode_info *pipe,
 
         return ret;
 }
+EXPORT_SYMBOL(__splice_from_pipe);
 
 ssize_t splice_from_pipe(struct pipe_inode_info *pipe, struct file *out,
                          loff_t *ppos, size_t len, unsigned int flags,
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index 2e19478e9e84..8bcbc54e1b48 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -99,4 +99,8 @@ extern ssize_t splice_from_pipe(struct pipe_inode_info *, struct file *,
                                 loff_t *, size_t, unsigned int,
                                 splice_actor *);
 
+extern ssize_t __splice_from_pipe(struct pipe_inode_info *, struct file *,
+                                  loff_t *, size_t, unsigned int,
+                                  splice_actor *);
+
 #endif