SD_GET_BLKNO
suip->ui_lba = (uint64_t)SD_GET_BLKNO(bp);
if (SD_GET_BLKNO(bp) < SD_GET_BLKNO(ap)) {
if (SD_GET_BLKNO(ap->av_forw) < SD_GET_BLKNO(ap)) {
if (SD_GET_BLKNO(bp) <
SD_GET_BLKNO(ap->av_forw)) {
if ((SD_GET_BLKNO(ap->av_forw) < SD_GET_BLKNO(ap)) ||
(SD_GET_BLKNO(bp) < SD_GET_BLKNO(ap->av_forw))) {
ssc->ssc_uscsi_info->ui_lba = (uint64_t)SD_GET_BLKNO(bp);