589   uint64_t offset;  member
623   virtual IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,
647           Read(req.offset, req.len, options, &req.result, req.scratch, dbg);  in MultiRead()
849   virtual void PrepareWrite(size_t offset, size_t len, const IOOptions& options,  in PrepareWrite()  argument
859         (offset + len + block_size - 1) / block_size;  in PrepareWrite()
912   virtual IOStatus Write(uint64_t offset, const Slice& data,
918   virtual IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,
1215   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()  argument
1216     return target_->InvalidateCache(offset, length);  in InvalidateCache()
1218   IOStatus PositionedRead(uint64_t offset, size_t n, const IOOptions& options,  in PositionedRead()  argument
1221     return target_->PositionedRead(offset, n, options, result, scratch, dbg);  in PositionedRead()
1233   IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,  in Read()  argument
1236     return target_->Read(offset, n, options, result, scratch, dbg);  in Read()
1242   IOStatus Prefetch(uint64_t offset, size_t n, const IOOptions& options,  in Prefetch()  argument
1244     return target_->Prefetch(offset, n, options, dbg);  in Prefetch()
1254   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()  argument
1255     return target_->InvalidateCache(offset, length);  in InvalidateCache()
1270   IOStatus PositionedAppend(const Slice& data, uint64_t offset,  in PositionedAppend()  argument
1273     return target_->PositionedAppend(data, offset, options, dbg);  in PositionedAppend()
1324   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()  argument
1325     return target_->InvalidateCache(offset, length);  in InvalidateCache()
1328   IOStatus RangeSync(uint64_t offset, uint64_t nbytes, const IOOptions& options,  in RangeSync()  argument
1330     return target_->RangeSync(offset, nbytes, options, dbg);  in RangeSync()
1333   void PrepareWrite(size_t offset, size_t len, const IOOptions& options,  in PrepareWrite()  argument
1335     target_->PrepareWrite(offset, len, options, dbg);  in PrepareWrite()
1338   IOStatus Allocate(uint64_t offset, uint64_t len, const IOOptions& options,  in Allocate()  argument
1340     return target_->Allocate(offset, len, options, dbg);  in Allocate()
1355   IOStatus Write(uint64_t offset, const Slice& data, const IOOptions& options,  in Write()  argument
1357     return target_->Write(offset, data, options, dbg);  in Write()
1359   IOStatus Read(uint64_t offset, size_t n, const IOOptions& options,  in Read()  argument
1362     return target_->Read(offset, n, options, result, scratch, dbg);  in Read()