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Date: Mon, 25 Jan 2021 18:55:28 +0100
From: Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 05/10] block: do not reassig ->bi_bdev when partition
 remapping
Message-ID: <20210125175528.GA13451@lst.de>
References: <20210124100241.1167849-1-hch@lst.de> <20210124100241.1167849-6-hch@lst.de> <dfdff48c-c263-8e7c-cb52-28e7bee00c45@kernel.dk>
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To: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>, Tejun Heo <tj@kernel.org>, Coly Li <colyli@suse.de>, Song Liu <song@kernel.org>, device-mapper development <dm-devel@redhat.com>, linux-bcache <linux-bcache@vger.kernel.org>, "open list:SOFTWARE RAID (Multiple Disks) SUPPORT" <linux-raid@vger.kernel.org>, linux-s390 <linux-s390@vger.kernel.org>, linux-block <linux-block@vger.kernel.org>

On Mon, Jan 25, 2021 at 10:53:36AM -0700, Jens Axboe wrote:
> On Sun, Jan 24, 2021 at 3:05 AM Christoph Hellwig <hch@lst.de> wrote:
> >
> > There is no good reason to reassign ->bi_bdev when remapping the
> > partition-relative block number to the device wide one, as all the
> > information required by the drivers comes from the gendisk anyway.
> >
> > Keeping the original ->bi_bdev alive will allow to greatly simplify
> > the partition-away I/O accounting.
> 
> This one causes boot failures for me on my laptop...

Any output to share?  Details of the config?