Re: xterm loses data (pty regression)

[Artur Skawina <art.08.09@gmail.com>]

Linus Torvalds wrote:
> 
>> (Do ^S/^Q, see data loss)

> I think it's really this trivial.
> 
> That pty commit removed the checking for tty->stopped in 
> pty_write_buffer() for no clear reason. And when it did that, it broke all 
> the pausing logic in drivers/char/n_tty.c.
> 
> Can you confirm?

>  static int pty_write_room(struct tty_struct *tty)
>  {
> +	if (tty->stopped)
> +		return 0;
>  	return pty_space(tty->link);
>  }

w/ this, the pty writes now block again after ^Q, and the data loss is gone.

Thanks,

artur