Re: blkdev_get() change causes OOPS...

[David Miller]

From: Tejun Heo <tj@xxxxxxxxxx>
Date: Wed, 1 Jun 2011 00:37:44 +0900

> On Mon, May 30, 2011 at 10:35:07PM -0700, David Miller wrote:
>> 
>> I don't think whole->bd_disk is guaranteed to be non-NULL where you're
>> dereferencing it in blkdev_get() after commit
>> d4dc210f69bcb0b4bef5a83b1c323817be89bad1 ("block: don't block events
>> on excl write for non-optical devices")
> 
> Ah... right, it's there if open succeeded.  I should have put the test
> after !res test.  Does the following patch fix the problem?

Works here:

Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>

Make sure this fix propagates into the stable submission.
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