/*
     * We would like to call __wt_txn_update_oldest only in the event that there are further updates
     * to this page, the check against WT_TXN_NONE is used as an indicator of there being further
     * updates on this page.
     */
    if ((txn = page->modify->obsolete_check_txn) != WT_TXN_NONE) {
        obsolete_timestamp = page->modify->obsolete_check_timestamp;
        if (!__wt_txn_visible_all(session, txn, obsolete_timestamp)) {
            /* Try to move the oldest ID forward and re-check. */
            WT_RET(__wt_txn_update_oldest(session, 0));

            if (!__wt_txn_visible_all(session, txn, obsolete_timestamp))
                return (0);
        }

        page->modify->obsolete_check_txn = WT_TXN_NONE;
    }