linux-kernel - Re: [PATCH] block: turn Oops into WARNING if bdi_register

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Message-ID: <20150427130436.GB31842@lst.de>
Date:	Mon, 27 Apr 2015 15:04:36 +0200
From:	Christoph Hellwig <hch@....de>
To:	NeilBrown <neilb@...e.de>
Cc:	Jens Axboe <axboe@...com>, Tejun Heo <tj@...nel.org>,
	Christoph Hellwig <hch@....de>,
	lkml <linux-kernel@...r.kernel.org>, viro@...iv.linux.org.uk
Subject: Re: [PATCH] block: turn Oops into WARNING if bdi_register_dev
	fails.

On Mon, Apr 27, 2015 at 03:19:31PM +1000, NeilBrown wrote:
> 
> add_disk() does not return an error status, but it can
> still fail if there are problems elsewhere.
> 
> In particular a recent problem caused bdi_register_dev()
> to sometimes fail because the name was already in use.

I guess that's the best workaround for now, but we'll really need to tackle
the problem that add_disk can return errors proper eventually.
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