Method write_zeroes

block/src/qcow_async.rs:240–244

(&mut self, offset: u64, length: u64, user_data: u64)

    }

    fn write_zeroes(&mut self, offset: u64, length: u64, user_data: u64) -> AsyncIoResult<()> {
        // For QCOW2, zeroing and hole punching are the same operation.
        // Both discard guest data so the range reads back as zero.
        self.punch_hole(offset, length, user_data)
    }

    fn batch_requests_enabled(&self) -> bool {
        true