linux-kernel - Re: How do I choose an arbitrary minor number for my tty device?

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Message-ID: <4CF7C56F.7040001@freescale.com>
Date:	Thu, 2 Dec 2010 10:12:31 -0600
From:	Timur Tabi <timur@...escale.com>
To:	Kay Sievers <kay.sievers@...y.org>
CC:	Greg KH <greg@...ah.com>,
	Michael Ellerman <michael@...erman.id.au>,
	Greg KH <gregkh@...e.de>,
	Wood Scott-B07421 <scottwood@...escale.com>,
	Arnd Bergmann <arnd@...db.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Yoder Stuart-B08248 <stuart.yoder@...escale.com>
Subject: Re: How do I choose an arbitrary minor number for my tty device?

Kay Sievers wrote:
> 
> It's racy at many levels, symlinks and other stuff are not replaced
> atomically, you get a "move" uevent", but it's not easy to connect the
> event to the old and new device. Device nodes are not renamed at all,
> there isn't even support for that in the kernel now.

Kay, thank you so much for this explanation.  I wish every function in the
kernel were described so thoroughly!  My life would be so much easier.

I put your text into a patch and posted it for review.

-- 
Timur Tabi
Linux kernel developer at Freescale

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