86   Status InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
92   Status PositionedRead(uint64_t offset, size_t n, Slice* result,  in PositionedRead()
127   Status Read(uint64_t offset, size_t n, Slice* result,  in Read()
140   Status Prefetch(uint64_t offset, size_t n) override {  in Prefetch()
179   Status InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
203       auto offset = file_->GetFileSize(); // size including prefix  in Append()  local
224   Status PositionedAppend(const Slice& data, uint64_t offset) override {  in PositionedAppend()
277   Status InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
287   Status RangeSync(uint64_t offset, uint64_t nbytes) override {  in RangeSync()
296   void PrepareWrite(size_t offset, size_t len) override {  in PrepareWrite()
301   Status Allocate(uint64_t offset, uint64_t len) override {  in Allocate()
329   Status Write(uint64_t offset, const Slice& data) override {  in Write()
353   Status Read(uint64_t offset, size_t n, Slice* result,  in Read()