ill_g_head_t
if (mdb_vread(iw->ill_g_heads, MAX_G_HEADS * sizeof (ill_g_head_t),
ill_g_head_t ill_g_heads[MAX_G_HEADS];
kmem_free(ipst->ips_ill_g_heads, sizeof (ill_g_head_t) * MAX_G_HEADS);
ipst->ips_ill_g_heads = kmem_zalloc(sizeof (ill_g_head_t) * MAX_G_HEADS,
ill_g_head_t ghead;