PR_CAPTURE
if ((pp->p_toxic & PR_CAPTURE) &&
ASSERT((bits & PR_CAPTURE) || PAGE_EXCL(pp));
page_clrtoxic(head->pp, PR_CAPTURE);
if (!(pp->p_toxic & PR_CAPTURE)) {
page_settoxic(pp, PR_CAPTURE);
page_clrtoxic(pp, PR_CAPTURE);
if (!(pp->p_toxic & PR_CAPTURE)) {
page_settoxic(pp, PR_CAPTURE);
page_clrtoxic(pp, PR_CAPTURE);
page_clrtoxic(bp1->pp, PR_CAPTURE);