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btrfs_uapi/
sync.rs

1//! # Filesystem sync: flushing all pending writes to disk
2//!
3//! Forces the kernel to commit all dirty btrfs metadata and data to stable
4//! storage.  Equivalent to calling `sync(2)` scoped to a single btrfs
5//! filesystem rather than all mounted filesystems.
6
7use crate::raw::btrfs_ioc_sync;
8use std::os::{fd::AsRawFd, unix::io::BorrowedFd};
9
10/// Force a sync on the btrfs filesystem referred to by `fd`.
11///
12/// Equivalent to `ioctl(fd, BTRFS_IOC_SYNC)`.
13pub fn sync(fd: BorrowedFd) -> nix::Result<()> {
14    unsafe { btrfs_ioc_sync(fd.as_raw_fd()) }?;
15    Ok(())
16}