linux-kernel - Re: [dm-devel] linux-next - WARNING: at fs/block_dev.c:824 bd_link_disk

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Message-ID: <20110114175942.GK31800@thunk.org>
Date:	Fri, 14 Jan 2011 12:59:42 -0500
From:	Ted Ts'o <tytso@....edu>
To:	Tejun Heo <tj@...nel.org>
Cc:	NeilBrown <neilb@...e.de>, Milan Broz <mbroz@...hat.com>,
	Karel Zak <kzak@...hat.com>,
	device-mapper development <dm-devel@...hat.com>,
	Jun'ichi Nomura <j-nomura@...jp.nec.com>,
	Valdis.Kletnieks@...edu, linux-kernel@...r.kernel.org,
	linux-raid@...r.kernel.org,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org, Kay Sievers <kay.sievers@...y.org>
Subject: Re: [dm-devel] linux-next - WARNING: at fs/block_dev.c:824
 bd_link_disk_holder+0x92/0x1ac()

On Fri, Jan 14, 2011 at 05:20:22PM +0100, Tejun Heo wrote:
> 
> Hmmm... that's already possible with the existing holders symlinks,
> right?  As Kay said in another message, I don't think we can do
> anything about the symlinks at this point.  It already has userland
> users, so we'll have to maintain them and there's no reason to create
> something else for the same functionality.

Yes, agreed.  My point was that if we have a better system, we could
migrate blkid and other users to new interface, and maybe in a few
years, we can deprecate that interface.  So we do have to maintain
them for at least the medium term, but that shouldn't stop us from
divising a better interface, and then gradually migrating systems to
use that newer and better interface.

						- Ted
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