Re: [PATCH v2] block: nbd: fix sanity check for first_minor

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To: "Yan, Zheng" <ukernel@xxxxxxxxx>
Subject: Re: [PATCH v2] block: nbd: fix sanity check for first_minor
From: Christoph Hellwig <hch@xxxxxx>
Date: Mon, 11 Oct 2021 09:35:56 +0200
Cc: linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, axboe@xxxxxxxxx, hch@xxxxxx, paskripkin@xxxxxxxxx, "Yan, Zheng" <yanzheng03@xxxxxxxxxxxx>
In-reply-to: <20211011024509.2012-1-ukernel@gmail.com>
References: <20211011024509.2012-1-ukernel@gmail.com>
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, Oct 11, 2021 at 10:45:09AM +0800, Yan, Zheng wrote:
> From: "Yan, Zheng" <yanzheng03@xxxxxxxxxxxx>
> 
> Device's minor is a 20-bits number, max value is 0xfffff.

I'd just drop this check again now that we do have proper error
handling in add_disk.

References:
- [PATCH v2] block: nbd: fix sanity check for first_minor
  - From: Yan, Zheng

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