TAILQ_INSERT_HEAD
TAILQ_INSERT_HEAD(&bc->bc_freeq, &bc->bc_reqs[i], be_link);
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
TAILQ_INSERT_HEAD(&p->iobhd, aior, io_blist);
TAILQ_INSERT_HEAD(&vrrp_vr_list, vr, vvr_next);
TAILQ_INSERT_HEAD(&intf->vvi_iplist, ip, vip_next);
TAILQ_INSERT_HEAD(hp, cp, c_hash);
TAILQ_INSERT_HEAD(hp, cp, c_hash);
TAILQ_INSERT_HEAD(hp, cp, c_hash);
TAILQ_INSERT_HEAD(hp, cp, c_hash);
TAILQ_INSERT_HEAD(&parent->kids, txn, klinks);
TAILQ_INSERT_HEAD(&DB_GLOBAL(db_envq), env, links);
TAILQ_INSERT_HEAD(&DB_GLOBAL(db_nameq), entry, links);
TAILQ_INSERT_HEAD(&DB_GLOBAL(db_envq), env, links);
TAILQ_INSERT_HEAD(&glyphs[map_idx], gl, g_list);
TAILQ_INSERT_HEAD(head, new, hi_entry);
TAILQ_INSERT_HEAD(&ptgt->m_active_cmdq, cmd, cmd_active_link);
TAILQ_INSERT_HEAD(&hostp->nh_rpchc, rpcp, nr_link);