linux-kernel - Re: [PATCH] vt: kill tty->count usage (v2)

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Message-ID: <20080819181443.2c1dbbf8@lxorguk.ukuu.org.uk>
Date:	Tue, 19 Aug 2008 18:14:43 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Aristeu Rozanski <aris@...hat.com>
Cc:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	jirislaby@...il.com
Subject: Re: [PATCH] vt: kill tty->count usage (v2)

> isn't too late for drivers that wait for the remaining data to be transmitted
> such as amiserial and cyclades? Unless there's a plan to do it at
> release_dev()?

Agreed: waiting for data to be transmitted is one thing, freeing resources
another. We don't want to be freeing resources until the tty object is
destructed. Also most drivers won't be able to block there as they will
be using krefs to the tty and thus potentially destructing it from an IRQ
handler.
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