SATI_UNMAP_SIZEOF_SCSI_UNMAP_BLOCK_DESCRIPTOR
SATI_UNMAP_SIZEOF_SCSI_UNMAP_BLOCK_DESCRIPTOR;
unmap_process_state->current_unmap_block_descriptor_index += SATI_UNMAP_SIZEOF_SCSI_UNMAP_BLOCK_DESCRIPTOR;
descriptor_length/SATI_UNMAP_SIZEOF_SCSI_UNMAP_BLOCK_DESCRIPTOR;