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Date: Fri, 13 Jul 2007 10:25:44 +0200
From: Attilio Rao <attilio@FreeBSD.org>
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To: Hans Petter Selasky <hselasky@c2i.net>
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Sender: Attilio Rao <asmrookie@gmail.com>
Cc: freebsd-current@freebsd.org, Julian Elischer <julian@elischer.org>,
	FreeBSD Current <current@freebsd.org>
Subject: Re: crash in tty code in 6.1.. fixed since?
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Hans Petter Selasky wrote:
> 
> If TTY was not Giant locked, you would have had an error there if another 
> mutex was locked, and the problem would have been solved years ago :-)

Not sure what you mean, but the first evidence is that you would have 
explicitly drop/pickup the mutex so that you would have handled the race 
  not trasparently as Giant does.
Moreover, it seems that tty should be partially locked with a sleeping 
primitive (sx probabilly).

Attilio