Re: your mail

Jiri Slaby
2012-02-13T09:40:14Z

On 02/12/2012 08:06 PM, Al Viro wrote:
> Yecchhh... If I'm reading (and grepping) it right, there are only two
> non-default instance of tty_operations ->shutdown() - pty and vt ones.
> Lovely... And while we are at it, vt instance is definitely not safe
> from interrupts - calls console_lock(). Not that it was relevant in
> this case...

Thanks for looking into that. I was too lazy to do that on Sunday.

You're right that it may cause problems. Fortunately vt doesn't refcount
ttys. Hence con_shutdown can be called only from release_tty (close
path) in the user context.

Adding to my TODO list, unless somebody beats me to fix it.

thanks,
--
js
suse labs