Re: [PATCH v3 part1 1/4] sg_io: pass request_queue to blk_verify_command

From: Paolo Bonzini
Date: Sat May 25 2013 - 02:19:34 EST


Il 25/05/2013 06:14, James Bottomley ha scritto:
> On Fri, 2013-05-24 at 10:32 +0200, Paolo Bonzini wrote:
>> Il 24/05/2013 10:03, James Bottomley ha scritto:
>>>>>>>>>>> Does anyone in the real world actually care about this bug?
>>>>>>>>>
>>>>>>>>> Yes, or I would move on and not waste so much time on this.
>>>>>>>
>>>>>>> Fine, so produce a simple fix for this bug which we can discuss that's
>>>>>>> not tied to this feature.
>>>>>
>>>>> Honestly, I have no idea how this is even possible.
>>> Really? It looks to me like a simple block on the commands for disk
>>> devices in the opcode switch would do it (with a corresponding change to
>>> sg.c:sg_allow_access).
>>
>> Which switch? What I can do is something like this in blk_verify_command:
>
> not in blk_verify_command: outside of it, in the three places it's used.

In other words,

if (blk_verify_command(...) ||
blk_verify_command_with_queue(q, ...))

We must have different taste.

Paolo
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