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39 lines
1.4 KiB
39 lines
1.4 KiB
5 years ago
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// +build linux
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/*
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* Minio Cloud Storage, (C) 2020 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package disk
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import (
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"os"
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"syscall"
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)
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// Fdatasync - fdatasync() is similar to fsync(), but does not flush modified metadata
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// unless that metadata is needed in order to allow a subsequent data retrieval
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// to be correctly handled. For example, changes to st_atime or st_mtime
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// (respectively, time of last access and time of last modification; see inode(7))
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// do not require flushing because they are not necessary for a subsequent data
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// read to be handled correctly. On the other hand, a change to the file size
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// (st_size, as made by say ftruncate(2)), would require a metadata flush.
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//
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// The aim of fdatasync() is to reduce disk activity for applications that
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// do not require all metadata to be synchronized with the disk.
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func Fdatasync(f *os.File) error {
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return syscall.Fdatasync(int(f.Fd()))
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}
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