linux-kernel - Re: [PATCH] firewire: fail open() quickly if the node doesn't exist anymore

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Date:	Mon, 28 Jan 2008 17:32:03 -0500
From:	Jarod Wilson <jwilson@...hat.com>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	linux1394-devel@...ts.sourceforge.net,
	Kristian Høgsberg <krh@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firewire: fail open() quickly if the node doesn't exist anymore

On Sunday 27 January 2008 12:21:56 pm Stefan Richter wrote:
> Scenario:  Process A keeps the character device file of node N open.
> N is being unplugged.  File /dev/fwN won't be destroyed as long as A
> doesn't close it.  Now, process B opens /dev/fwN as well.  Previously
> it would succeed but be unable to do any IO on it of course.  With this
> patch, process B's open() will fail immediately with -ENODEV.
>
> Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>

Makes perfect sense to me, no problems with it in cursory testing.

Signed-off-by: Jarod Wilson <jwilson@...hat.com>

-- 
Jarod Wilson
jwilson@...hat.com
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