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Date:	Mon, 10 Nov 2008 14:35:22 +0000
From:	Alasdair G Kergon <agk@...hat.com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Mikulas Patocka <mpatocka@...hat.com>,
	Christoph Hellwig <hch@...radead.org>,
	Chandra Seetharaman <sekharan@...ibm.com>,
	dm-devel <dm-devel@...hat.com>, linux-kernel@...r.kernel.org,
	axboe@...nel.dk
Subject: Re: Queue upcall locking (was: [dm-devel] [RFC][PATCH] fix dm_any_congested() to properly sync up with suspend code path)

On Mon, Nov 10, 2008 at 03:26:50PM +0100, Peter Zijlstra wrote:
> Fix the infrastructure by adding a function call so that you can have
> the individual devices report their congestion state to the aggregate.
 
Which requires knowing/accessing some device hierarchy, which would be nice
for other things too (like propagation of notification of changes to device
properties such as size, hardsect size etc.).

Alasdair
-- 
agk@...hat.com
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