linux-kernel - Re: Change in register

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Date:   Thu, 1 Feb 2018 16:25:08 -0800
From:   "Srivatsa S. Bhat" <srivatsa@...il.mit.edu>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     logang@...tatee.com, axboe@...nel.dk, jlayton@...chiereds.net,
        bfields@...ldses.org, linux-kernel@...r.kernel.org
Subject: Re: Change in register_blkdev() behavior

On 1/31/18 6:24 AM, Greg KH wrote:
> On Tue, Jan 30, 2018 at 04:56:32PM -0800, Srivatsa S. Bhat wrote:
>>
>> Hi,
>>
>> Before commit 133d55cdb2f "block: order /proc/devices by major number",
>> if register_blkdev() was called with major = [1..UINT_MAX], it used to
>> succeed (provided the requested major number was actually free).
> 
> How was LTP calling register_blkdev() with such crazy numbers?
> 

Haha :-) No idea!

> Anyway, I agree with Logan, this sounds like something to be resolved in
> LTP, as allowing block devices with numbers greater than the number we
> really allow seems like an odd requirement :)
> 

Agreed! And thanks for confirming!

Regards,
Srivatsa