github.com/zuoyebang/bitalostable@v1.0.1-0.20240229032404-e3b99a834294/vfs/prefetch_generic.go (about)

     1  // Copyright 2020 The LevelDB-Go and Pebble Authors. All rights reserved. Use
     2  // of this source code is governed by a BSD-style license that can be found in
     3  // the LICENSE file.
     4  
     5  //go:build !linux
     6  // +build !linux
     7  
     8  package vfs
     9  
    10  // Prefetch signals the OS (on supported platforms) to fetch the next size
    11  // bytes in file (as returned by os.File.Fd()) after offset into cache. Any
    12  // subsequent reads in that range will not issue disk IO.
    13  func Prefetch(file uintptr, offset uint64, size uint64) error {
    14  	// No-op.
    15  	return nil
    16  }