centos man page for xdr_reserve_space

XDR_RESERVE_SPACE(9)						 Linux Networking					      XDR_RESERVE_SPACE(9)

NAME
       xdr_reserve_space - Reserve buffer space for sending

SYNOPSIS
       __be32 * xdr_reserve_space(struct xdr_stream * xdr, size_t nbytes);

ARGUMENTS
       xdr
	   pointer to xdr_stream

       nbytes
	   number of bytes to reserve

DESCRIPTION
       Checks that we have enough buffer space to encode 'nbytes' more bytes of data. If so, update the total xdr_buf length, and adjust the
       length of the current kvec.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						      XDR_RESERVE_SPACE(9)