nsects           1181 scsi/sd.c      	daddr64_t	nsects;		/* number of sectors in partition */
nsects           1222 scsi/sd.c      	nsects = DL_GETPSIZE(&lp->d_partitions[part]);
nsects           1226 scsi/sd.c      	if ((blkno < 0) || ((blkno + totwrt) > nsects))