Re: [PATCH] xen/blkfront: allow xenbus state transition to Closing->Closed when not Connected.

[Jeremy Fitzhardinge <jeremy@goop.org>]

Jens Axboe wrote:
> On Mon, May 18 2009, Jeremy Fitzhardinge wrote:
>   
>> Ian Campbell wrote:
>>     
>>> This situation can occur when attempting to attach a block device whose backend
>>> is an empty physical CD-ROM driver. The backend in this case will go directly
>>> from the Initialising state to Closing->Closed. Previously this would result in
>>> a NULL pointer deref on info->gd (xenbus_dev_fatal does not return as a1a15ac5
>>> seems to expect)
>>>
>>> Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
>>> Cc: Jeremy Fitzhardinge <jeremy@goop.org>
>>>   
>>>       
>> Jens, does this look OK to you?
>>
>> Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
>>     
>
> Looks fine, shall I add it for 2.6.30? Does it need a stable backport?
>   

Yes please, and for .29.  As far as I know there's been no change to 
blkfront, so it should apply as-is.

There's another patch to go with it that I'm just having a closer look 
at.  I'll probably send it your way shortly.

Thanks,
    J