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Date:   Mon, 21 Jun 2021 07:18:48 +0100
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Subject: Re: [PATCH v2] block: genhd: don't call probe function with
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The obvious fix is to not call unregister_blkdev under loop_ctl_mutex.
Which is pretty pointless anyway - I have a series to fix that but it
might need some reordering to move this to the front.