rw_lock_held
KASSERT(anon->an_ref == 0 || rw_lock_held(anon->an_lock));
KASSERT(rw_lock_held(uobj->vmobjlock));
KASSERT(rw_lock_held(anons[lcv]->an_lock));
KASSERT(rw_lock_held(anon->an_lock));
KASSERT(uobj == NULL || rw_lock_held(uobj->vmobjlock));
KASSERT(rw_lock_held(lock));
: rw_lock_held(pg->uobject->vmobjlock);
: rw_lock_held(pg->uanon->an_lock);
KASSERT(rw_lock_held(uobj->vmobjlock));