V_spacqtree
for (acq = LIST_FIRST(&V_spacqtree); acq != NULL; acq = nextacq) {
LIST_INSERT_HEAD(&V_spacqtree, acq, chain);
LIST_FOREACH(acq, &V_spacqtree, chain) {
LIST_INIT(&V_spacqtree);
for (spacq = LIST_FIRST(&V_spacqtree); spacq != NULL;