linux-kernel - Re: [PATCH 13/13] tty: turn ldisc

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Date:	Wed, 5 May 2010 11:18:51 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-kernel@...r.kernel.org
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, Greg KH <gregkh@...e.de>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	John Kacur <jkacur@...hat.com>,
	Al Viro <viro@...iv.linux.org.uk>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [PATCH 13/13] tty: turn ldisc_mutex into a regular mutex

On Wednesday 05 May 2010, Arnd Bergmann wrote:
> This fixes the lock order of the BTM and
> ldisc_mutex so that we never take the BTM
> while holding ldisc_mutex, which means
> we no longer have to use mutex_lock_tty
> when getting ldisc_mutex.
> 
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Ignore this one, I just realized that we're releasing
and reacquiring the BTM in tty_ldisc_halt,
tty_set_termios_ldisc and possibly others.

This patch needs more work to make that possible.

	Arnd
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