Method read_vectored

block/src/raw_sync.rs:41–64

(
        &mut self,
        offset: libc::off_t,
        iovecs: &[libc::iovec],
        user_data: u64,
    )

    }

    fn read_vectored(
        &mut self,
        offset: libc::off_t,
        iovecs: &[libc::iovec],
        user_data: u64,
    ) -> AsyncIoResult<()> {
        // SAFETY: FFI call with valid arguments
        let result = unsafe {
            libc::preadv(
                self.fd as libc::c_int,
                iovecs.as_ptr(),
                iovecs.len() as libc::c_int,
                offset,
            )
        };
        if result < 0 {
            return Err(AsyncIoError::ReadVectored(std::io::Error::last_os_error()));
        }

        self.completion_list.push_back((user_data, result as i32));
        self.eventfd.write(1).unwrap();

        Ok(())
    }

    fn write_vectored(
        &mut self,