linux-kernel - Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio allocation by stacking drivers

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Message-ID: <20120829172336.GB5576@agk-dp.fab.redhat.com>
Date:	Wed, 29 Aug 2012 18:23:36 +0100
From:	Alasdair G Kergon <agk@...hat.com>
To:	Kent Overstreet <koverstreet@...gle.com>
Cc:	Vivek Goyal <vgoyal@...hat.com>, Jens Axboe <axboe@...nel.dk>,
	dm-devel@...hat.com, linux-kernel@...r.kernel.org,
	linux-bcache@...r.kernel.org,
	Mikulas Patocka <mpatocka@...hat.com>, bharrosh@...asas.com,
	tj@...nel.org
Subject: Re: [dm-devel] [PATCH v7 9/9] block: Avoid deadlocks with bio
	allocation by stacking drivers

On Wed, Aug 29, 2012 at 10:13:45AM -0700, Kent Overstreet wrote:
> Only on allocation failure.
 
Which as you already said assumes wrapping together the other mempools in the
submission path first...

Alasdair

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