cifs: abstract out function to marshal the iovec for readv receives

Cached and uncached reads will need to do different things here to
handle the difference when the pages are in pagecache and not. Abstract
out the function that marshals the page list into a kvec array.

Signed-off-by: Jeff Layton <jlayton@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index d57cdf4e2033..f309b43848fb 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -472,6 +472,8 @@ struct cifs_readdata {
         int                             result;
         struct list_head                pages;
         struct work_struct              work;
+        int (*marshal_iov) (struct cifs_readdata *rdata,
+                            unsigned int remaining);
         unsigned int                    nr_iov;
         struct kvec                     iov[1];
 };