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21 lines
610 B
Go
21 lines
610 B
Go
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// Copyright 2019 The LevelDB-Go and Pebble Authors. All rights reserved. Use
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// of this source code is governed by a BSD-style license that can be found in
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// the LICENSE file.
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//go:build linux
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// +build linux
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package vfs
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import "golang.org/x/sys/unix"
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// Calls Fadvise with FADV_RANDOM to disable readahead on a file descriptor.
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func fadviseRandom(f uintptr) error {
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return unix.Fadvise(int(f), 0, 0, unix.FADV_RANDOM)
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}
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// Calls Fadvise with FADV_SEQUENTIAL to enable readahead on a file descriptor.
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func fadviseSequential(f uintptr) error {
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return unix.Fadvise(int(f), 0, 0, unix.FADV_SEQUENTIAL)
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}
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