scsi_hba_barrier
struct scsi_hba_barrier *nb;
struct scsi_hba_barrier *b;
struct scsi_hba_barrier **bp;
nb = kmem_alloc(sizeof (struct scsi_hba_barrier), KM_SLEEP);
struct scsi_hba_barrier *b;
kmem_free(b, sizeof (struct scsi_hba_barrier));
struct scsi_hba_barrier **bp;
struct scsi_hba_barrier *b;
kmem_free(b, sizeof (struct scsi_hba_barrier));
struct scsi_hba_barrier *barrier_next;