Re: PROBLEM: Race condition in tty buffer's functionflush_to_ldisc().

[Alan Cox]

> Of course I know about tty_buffer_flush(), it only read TTY_FLUSHING,
> it can't change TTY_FLUSHING, if flush_to_ldisc() single threaded,
> we can change TTY_FLUSHING only in one place in one time(in
> flush_to_ldisc()), therefor we can use only "set_bit(TTY_FLUSHING,
> &tty->flags)" without test.

Yes.. if you can pin down why in your testing you see the other case
sometimes being true.

Alan
 

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