120 struct IoBlock {  struct
467     void PrepareReadBlock(IoBlock* block, uint64_t id) {  in PrepareReadBlock()
475     IoBlock CreateReadBlock(uint64_t id) {  in CreateReadBlock()
476         IoBlock block;  in CreateReadBlock()
521         IoBlock* block = &read_requests_[read_idx];  in HandleRead()
534             IoBlock* current_block = &read_requests_[read_idx];  in HandleRead()
543     void ProcessRead(IoBlock* block) {  in ProcessRead()
575     bool SubmitRead(IoBlock* block) {  in SubmitRead()
608     std::unique_ptr<IoBlock> CreateWriteBlock(std::shared_ptr<Block> payload, size_t offset,  in CreateWriteBlock()
610         auto block = std::make_unique<IoBlock>();  in CreateWriteBlock()
625     std::unique_ptr<IoBlock> CreateWriteBlock(Block payload, uint64_t id) {  in CreateWriteBlock()
692     std::array<IoBlock, kUsbReadQueueDepth> read_requests_;
702     std::deque<std::unique_ptr<IoBlock>> write_requests_ GUARDED_BY(write_mutex_);