wi_head          2110 dev/ic/wdc.c   LIST_HEAD(, wdc_ioctl) wi_head;
wi_head          2125 dev/ic/wdc.c   	LIST_INSERT_HEAD(&wi_head, wi, wi_list);
wi_head          2158 dev/ic/wdc.c   	LIST_FOREACH(wi, &wi_head, wi_list)