orangefs: explicitly pass the size to pvfs_bufmap_copy_to_iovec()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
diff --git a/fs/orangefs/pvfs2-bufmap.h b/fs/orangefs/pvfs2-bufmap.h
index a0f84c0..d1aedb5 100644
--- a/fs/orangefs/pvfs2-bufmap.h
+++ b/fs/orangefs/pvfs2-bufmap.h
@@ -49,7 +49,8 @@
 
 int pvfs_bufmap_copy_to_iovec(struct pvfs2_bufmap *bufmap,
 			      struct iov_iter *iter,
-			      int buffer_index);
+			      int buffer_index,
+			      size_t size);
 
 size_t pvfs_bufmap_copy_to_user_task_iovec(struct task_struct *tsk,
 					   struct iovec *iovec,