TRIM_PAIR
(max_dsm_blocks*sequence->device->logical_block_size)/sizeof(TRIM_PAIR);
(U8 *)(unmap_process_state->current_dsm_descriptor) + sizeof(TRIM_PAIR);
U32 blocks = (dsm_descriptor_count * sizeof(TRIM_PAIR))/sequence->device->logical_block_size;
if ((dsm_descriptor_count * sizeof(TRIM_PAIR)) % sequence->device->logical_block_size)