slab_tohashslab
zone_free_item(slabzone(keg->uk_ipers), slab_tohashslab(slab),
slab_tohashslab(slab), NULL, SKIP_NONE);
slab_tohashslab(slab)->uhs_data = mem;
(mem))], slab_tohashslab(s), uhs_hlink)
LIST_REMOVE(slab_tohashslab(s), uhs_hlink)
return (slab_tohashslab(slab)->uhs_data);