76       fs_reqs[i].status = IOStatus::OK();  in MultiRead()
620   IOStatus Read(size_t n, const IOOptions& /*options*/, Slice* result,  in Read()
624   IOStatus Skip(uint64_t n) override {  in Skip()
631   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
634   IOStatus PositionedRead(uint64_t offset, size_t n,  in PositionedRead()
652   IOStatus Read(uint64_t offset, size_t n, const IOOptions& /*options*/,  in Read()
657   IOStatus MultiRead(FSReadRequest* fs_reqs, size_t num_reqs,  in MultiRead()
682   IOStatus Prefetch(uint64_t offset, size_t n, const IOOptions& /*options*/,  in Prefetch()
696   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
709   IOStatus Append(const Slice& data, const IOOptions& /*options*/,  in Append()
713   IOStatus PositionedAppend(const Slice& data, uint64_t offset,  in PositionedAppend()
718   IOStatus Truncate(uint64_t size, const IOOptions& /*options*/,  in Truncate()
722   IOStatus Close(const IOOptions& /*options*/,  in Close()
726   IOStatus Flush(const IOOptions& /*options*/,  in Flush()
730   IOStatus Sync(const IOOptions& /*options*/,  in Sync()
734   IOStatus Fsync(const IOOptions& /*options*/,  in Fsync()
772   IOStatus InvalidateCache(size_t offset, size_t length) override {  in InvalidateCache()
776   IOStatus RangeSync(uint64_t offset, uint64_t nbytes,  in RangeSync()
787   IOStatus Allocate(uint64_t offset, uint64_t len, const IOOptions& /*options*/,  in Allocate()
807   IOStatus Write(uint64_t offset, const Slice& data,  in Write()
812   IOStatus Read(uint64_t offset, size_t n, const IOOptions& /*options*/,  in Read()
817   IOStatus Flush(const IOOptions& /*options*/,  in Flush()
821   IOStatus Sync(const IOOptions& /*options*/,  in Sync()
825   IOStatus Fsync(const IOOptions& /*options*/,  in Fsync()
829   IOStatus Close(const IOOptions& /*options*/,  in Close()
843   IOStatus Fsync(const IOOptions& /*options*/,  in Fsync()
867   IOStatus NewSequentialFile(const std::string& f,  in NewSequentialFile()
878   IOStatus NewRandomAccessFile(const std::string& f,  in NewRandomAccessFile()
889   IOStatus NewWritableFile(const std::string& f, const FileOptions& file_opts,  in NewWritableFile()
899   IOStatus ReopenWritableFile(const std::string& fname,  in ReopenWritableFile()
910   IOStatus ReuseWritableFile(const std::string& fname,  in ReuseWritableFile()
922   IOStatus NewRandomRWFile(const std::string& fname,  in NewRandomRWFile()
933   IOStatus NewMemoryMappedFileBuffer(  in NewMemoryMappedFileBuffer()
939   IOStatus NewDirectory(const std::string& name, const IOOptions& /*io_opts*/,  in NewDirectory()
949   IOStatus FileExists(const std::string& f, const IOOptions& /*io_opts*/,  in FileExists()
953   IOStatus GetChildren(const std::string& dir, const IOOptions& /*io_opts*/,  in GetChildren()
958   IOStatus GetChildrenFileAttributes(const std::string& dir,  in GetChildrenFileAttributes()
964   IOStatus DeleteFile(const std::string& f, const IOOptions& /*options*/,  in DeleteFile()
968   IOStatus Truncate(const std::string& fname, size_t size,  in Truncate()
973   IOStatus CreateDir(const std::string& d, const IOOptions& /*options*/,  in CreateDir()
977   IOStatus CreateDirIfMissing(const std::string& d,  in CreateDirIfMissing()
982   IOStatus DeleteDir(const std::string& d, const IOOptions& /*options*/,  in DeleteDir()
986   IOStatus GetFileSize(const std::string& f, const IOOptions& /*options*/,  in GetFileSize()
991   IOStatus GetFileModificationTime(const std::string& fname,  in GetFileModificationTime()
999   IOStatus GetAbsolutePath(const std::string& db_path,  in GetAbsolutePath()
1006   IOStatus RenameFile(const std::string& s, const std::string& t,  in RenameFile()
1012   IOStatus LinkFile(const std::string& s, const std::string& t,  in LinkFile()
1018   IOStatus NumFileLinks(const std::string& fname, const IOOptions& /*options*/,  in NumFileLinks()
1023   IOStatus AreFilesSame(const std::string& first, const std::string& second,  in AreFilesSame()
1029   IOStatus LockFile(const std::string& f, const IOOptions& /*options*/,  in LockFile()
1034   IOStatus UnlockFile(FileLock* l, const IOOptions& /*options*/,  in UnlockFile()
1039   IOStatus GetTestDirectory(const IOOptions& /*options*/, std::string* path,  in GetTestDirectory()
1043   IOStatus NewLogger(const std::string& fname, const IOOptions& /*options*/,  in NewLogger()
1080   IOStatus GetFreeSpace(const std::string& path, const IOOptions& /*options*/,  in GetFreeSpace()