xdr_enter_page - decode data from the XDR page
void xdr_enter_page(struct xdr_stream * xdr, unsigned int len);
Moves data beyond the current pointer position from the XDR head buffer into the page list. Any data that lies beyond current position + “len” bytes is moved into the XDR tail. The current pointer is then repositioned at the beginning of the first XDR page.
|January 2017||Kernel Hackers Manual 4.8.|