R4OUTOFSPACE
if ((rp->r_flags & R4OUTOFSPACE) ||
if (!(rp->r_flags & R4OUTOFSPACE)) {
rp->r_flags |= R4OUTOFSPACE;
else if (rp->r_flags & R4OUTOFSPACE) {
rp->r_flags &= ~R4OUTOFSPACE;
(rp->r_flags & R4OUTOFSPACE)) {