linux-kernel - Re: [PATCH 3/5] tty: handle VT specific compat ioctls in vt driver

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Message-ID: <20090807105732.1340a115@lxorguk.ukuu.org.uk>
Date:	Fri, 7 Aug 2009 10:57:32 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	Christoph Hellwig <hch@....de>,
	Andi Kleen <andi@...stfloor.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: Re: [PATCH 3/5] tty: handle VT specific compat ioctls in vt driver

On Fri, 7 Aug 2009 08:23:58 +0200
Frederic Weisbecker <fweisbec@...il.com> wrote:

> Hi,
> 
> 
> On Thu, Aug 06, 2009 at 03:09:28PM +0200, Arnd Bergmann wrote:
> > The VT specific compat_ioctl handlers are the only ones
> > in common code that require the BKL. Moving them into
> > the vt driver lets us remove the BKL from the other handlers
> > and cleans up the code.
> 
> 
> Why does it require the bkl?

It's always taken the BKL - you have to prove it doesn't need it. Which
btw isn't true - it does need it in various places still.

Alan
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