# FILE_SYNC_WRITE

`import { FILE_SYNC_WRITE } from "destack:fs/binding";`

Start writeback for the requested range.

```ds title="FILE_SYNC_WRITE"
const FILE_SYNC_WRITE: FileSyncFlags
```

[language/library/src/fs/binding/file.ds:138](https://github.com/destack-sh/destack/blob/main/language/library/src/fs/binding/file.ds#L138)