linux-kernel - Re: [PATCH 5/5] fs/block_dev: replace GENHD_FL_UP with GENHD_FL_DISK

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Message-ID: <YPev47BHsZ5Tmlt3@infradead.org>
Date:   Wed, 21 Jul 2021 06:25:55 +0100
From:   Christoph Hellwig <hch@...radead.org>
To:     Luis Chamberlain <mcgrof@...nel.org>
Cc:     axboe@...nel.dk, hare@...e.de, bvanassche@....org,
        ming.lei@...hat.com, hch@...radead.org, jack@...e.cz,
        osandov@...com, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] fs/block_dev: replace GENHD_FL_UP with
 GENHD_FL_DISK_ADDED

On Tue, Jul 20, 2021 at 11:20:48AM -0700, Luis Chamberlain wrote:
> The GENHD_FL_DISK_ADDED flag is what we really want, as the
> flag GENHD_FL_UP could be set on a semi-initialized device.

No.  Here we must reject opens once del_gendisk has been called.