amap_pp_adjref
amap_pp_adjref(amap, offset, len, refv);
amap_pp_adjref(amap, slotoff + slotmapped,
amap_pp_adjref(amap, slotoff, slotadd, 1);
amap_pp_adjref(amap,
amap_pp_adjref(amap, slotoff + slotmapped,
amap_pp_adjref(srcamap, entry->aref.ar_pageoff,
void amap_pp_adjref /* adjust references */