PFR_REFCNT_ANCHOR
ts->pfrts_refcnt[PFR_REFCNT_ANCHOR],
if (!kt->pfrkt_root->pfrkt_refcnt[PFR_REFCNT_ANCHOR]++)
if (!--kt->pfrkt_root->pfrkt_refcnt[PFR_REFCNT_ANCHOR])
e->pft.pfrts_refcnt[PFR_REFCNT_ANCHOR];