memmove(sp, tail, num_move * sizeof *sp);
vb->num_spans -= num_move;
}
memmove(sp, tail, num_move * sizeof *sp);
vb->num_spans -= num_move;
}
/* make sure we have space for at least two new spans (split + add) */
if(vb->num_spans + 1 >= vb->max_spans) {
/* make sure we have space for at least two new spans (split + add) */
if(vb->num_spans + 1 >= vb->max_spans) {