Method set_writeback_mode

virtio-devices/src/block.rs:1001–1008

(&mut self, enabled: bool)

    }

    fn set_writeback_mode(&mut self, enabled: bool) {
        self.config.writeback = enabled as u8;
        self.writeback.store(enabled, Ordering::Release);
        info!(
            "Changing cache mode to {}",
            if enabled { "writeback" } else { "writethrough" }
        );
    }

    pub fn resize(&mut self, new_size: u64) -> Result<()> {
        if !new_size.is_multiple_of(SECTOR_SIZE) {