sqlist_insert
static void sqlist_insert(sqlist_t *, syncq_t *);
sqlist_insert(sqlist, q->q_syncq);
sqlist_insert(sqlist, q->q_syncq);
sqlist_insert(sqlist, _WR(q)->q_syncq);
sqlist_insert(&sqlist, _RD(stpdown->sd_wrq)->q_syncq);