linux-kernel - Re: [PATCH 16/24] PTY: add tty

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Date:	Wed, 13 Jun 2012 17:29:05 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Jiri Slaby <jslaby@...e.cz>
Cc:	alan@...ux.intel.com, linux-kernel@...r.kernel.org,
	jirislaby@...il.com
Subject: Re: [PATCH 16/24] PTY: add tty_port

On Tue, Jun 12, 2012 at 03:55:44PM -0700, Greg KH wrote:
> On Mon, Jun 04, 2012 at 01:35:30PM +0200, Jiri Slaby wrote:
> > This has *no* function in the PTY driver yet. However as the tty
> > buffers will move to the tty_port structure, we will need tty_port for
> > all TTYs in the system, PTY inclusive.
> > 
> > For PTYs this is ensured by allocating 2 tty_port's in pty_install,
> > i.e. where the tty->link is allocated. Both tty_port's are properly
> > assigned to each end of the tty.
> > 
> > Freeing is done at the same place where tty is freed, i.e. in
> > tty->ops->cleanup.
> > 
> > This means BTW that tty_port does not outlive TTY in PTY. This might
> > be a subject to change in the future if we see some problems.
> > 
> > Signed-off-by: Jiri Slaby <jslaby@...e.cz>
> > ---
> >  drivers/tty/pty.c |   25 +++++++++++++++++++++----
> >  1 file changed, 21 insertions(+), 4 deletions(-)
> 
> As the locking rework got removed from Linus's tree, this patch doesn't
> apply, so I've stopped at this point in the series.

Argh, this was my fault, sorry, let me try this again, I missed 14 and
15 for some reason...

greg k-h
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