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Date:   Wed, 15 Apr 2020 05:39:25 -0700
From:   Christoph Hellwig <hch@infradead.org>
To:     Luis Chamberlain <mcgrof@kernel.org>
Cc:     Christoph Hellwig <hch@infradead.org>, axboe@kernel.dk,
        viro@zeniv.linux.org.uk, bvanassche@acm.org,
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        akpm@linux-foundation.org, mhocko@suse.com, yukuai3@huawei.com,
        linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        Omar Sandoval <osandov@fb.com>,
        Hannes Reinecke <hare@suse.com>,
        Michal Hocko <mhocko@kernel.org>
Subject: Re: [PATCH 3/5] blktrace: refcount the request_queue during ioctl
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On Wed, Apr 15, 2020 at 12:34:34PM +0000, Luis Chamberlain wrote:
> I'll pile up a fix. I've also considered doing a full review of callers
> outside of the core block layer using it, and maybe just unexporting
> this. It was originally exported due to commit d86e0e83b ("block: export
> blk_{get,put}_queue()") to fix a scsi bug, but I can't find such
> respective fix. I suspec that using bdgrab()/bdput() seems more likely
> what drivers should be using. That would allow us to keep this
> functionality internal.
> 
> Think that's worthy review?

Probably.  I did in fact very quickly look into that but then gave
up due to the fair amount of modular users.