RPC: Allow struc xdr_stream to read the page section of an xdr_buf

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h
index 84c35d4..e6d3d34 100644
--- a/include/linux/sunrpc/xdr.h
+++ b/include/linux/sunrpc/xdr.h
@@ -194,6 +194,7 @@
 extern void xdr_init_decode(struct xdr_stream *xdr, struct xdr_buf *buf, uint32_t *p);
 extern uint32_t *xdr_inline_decode(struct xdr_stream *xdr, size_t nbytes);
 extern void xdr_read_pages(struct xdr_stream *xdr, unsigned int len);
+extern void xdr_enter_page(struct xdr_stream *xdr, unsigned int len);
 
 #endif /* __KERNEL__ */