397     AlignedBuffer prefixBuf;  in NewSequentialFile()  local
402       prefixBuf.Alignment(underlying->GetRequiredBufferAlignment());  in NewSequentialFile()
403       prefixBuf.AllocateNewBuffer(prefixLength);  in NewSequentialFile()
404       status = underlying->Read(prefixLength, &prefixSlice, prefixBuf.BufferStart());  in NewSequentialFile()
408       prefixBuf.Size(prefixLength);  in NewSequentialFile()
435     AlignedBuffer prefixBuf;  in NewRandomAccessFile()  local
440       prefixBuf.Alignment(underlying->GetRequiredBufferAlignment());  in NewRandomAccessFile()
441       prefixBuf.AllocateNewBuffer(prefixLength);  in NewRandomAccessFile()
442       status = underlying->Read(0, prefixLength, &prefixSlice, prefixBuf.BufferStart());  in NewRandomAccessFile()
446       prefixBuf.Size(prefixLength);  in NewRandomAccessFile()
473     AlignedBuffer prefixBuf;  in NewWritableFile()  local
478       prefixBuf.Alignment(underlying->GetRequiredBufferAlignment());  in NewWritableFile()
479       prefixBuf.AllocateNewBuffer(prefixLength);  in NewWritableFile()
480       provider_->CreateNewPrefix(fname, prefixBuf.BufferStart(), prefixLength);  in NewWritableFile()
481       prefixBuf.Size(prefixLength);  in NewWritableFile()
482       prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in NewWritableFile()
520     AlignedBuffer prefixBuf;  in ReopenWritableFile()  local
525       prefixBuf.Alignment(underlying->GetRequiredBufferAlignment());  in ReopenWritableFile()
526       prefixBuf.AllocateNewBuffer(prefixLength);  in ReopenWritableFile()
527       provider_->CreateNewPrefix(fname, prefixBuf.BufferStart(), prefixLength);  in ReopenWritableFile()
528       prefixBuf.Size(prefixLength);  in ReopenWritableFile()
529       prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in ReopenWritableFile()
562     AlignedBuffer prefixBuf;  in ReuseWritableFile()  local
567       prefixBuf.Alignment(underlying->GetRequiredBufferAlignment());  in ReuseWritableFile()
568       prefixBuf.AllocateNewBuffer(prefixLength);  in ReuseWritableFile()
569       provider_->CreateNewPrefix(fname, prefixBuf.BufferStart(), prefixLength);  in ReuseWritableFile()
570       prefixBuf.Size(prefixLength);  in ReuseWritableFile()
571       prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in ReuseWritableFile()
610     AlignedBuffer prefixBuf;  in NewRandomRWFile()  local
614       prefixBuf.Alignment(underlying->GetRequiredBufferAlignment());  in NewRandomRWFile()
615       prefixBuf.AllocateNewBuffer(prefixLength);  in NewRandomRWFile()
618         status = underlying->Read(0, prefixLength, &prefixSlice, prefixBuf.BufferStart());  in NewRandomRWFile()
622         prefixBuf.Size(prefixLength);  in NewRandomRWFile()
625         provider_->CreateNewPrefix(fname, prefixBuf.BufferStart(), prefixLength);  in NewRandomRWFile()
626         prefixBuf.Size(prefixLength);  in NewRandomRWFile()
627         prefixSlice = Slice(prefixBuf.BufferStart(), prefixBuf.CurrentSize());  in NewRandomRWFile()