linux-kernel - Re: [dm-devel] [PATCH 2/2] block: Avoid deadlocks with bio allocation by stacking drivers

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Message-ID: <20120910230917.GB10477@agk-dp.fab.redhat.com>
Date:	Tue, 11 Sep 2012 00:09:17 +0100
From:	Alasdair G Kergon <agk@...hat.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Kent Overstreet <koverstreet@...gle.com>, axboe@...nel.dk,
	device-mapper development <dm-devel@...hat.com>,
	david@...morbit.com, linux-kernel@...r.kernel.org,
	linux-bcache@...r.kernel.org,
	Mikulas Patocka <mpatocka@...hat.com>, bharrosh@...asas.com,
	Vivek Goyal <vgoyal@...hat.com>
Subject: Re: [dm-devel] [PATCH 2/2] block: Avoid deadlocks with bio
	allocation by stacking drivers

On Mon, Sep 10, 2012 at 04:01:01PM -0700, Tejun Heo wrote:
> IIUC, Kent posted a patch which converts all of them to use front-pad

The only patch I saw posted here only handles one of the easier cases so far.

The others are a bit trickier and probably involve a decision about which way to
change an in-kernel dm interface.

Alasdair

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