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