linux-kernel - Re: [rfc][patch 1/3] block: non-atomic queue

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Message-ID: <20071218074439.GB31964@kernel.dk>
Date:	Tue, 18 Dec 2007 08:44:40 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Nick Piggin <npiggin@...e.de>
Cc:	linux-scsi@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [rfc][patch 1/3] block: non-atomic queue_flags prep

On Sat, Dec 15 2007, Nick Piggin wrote:
> Hi,
> 
> This is just an idea I had, which might make request processing a little
> bit cheaper depending on queue behaviour. For example if it is getting plugged
> unplugged frequently (as I think is the case for some database workloads),
> then we might save one or two atomic operations per request.
> 
> Anyway, I'm not completely sure if I have ensured all queue_flags users are
> safe (I think md may need a bit of help). But overall it seems quite doable.

Looks ok to me, I'll throw it into the testing mix. Thanks Nick!

-- 
Jens Axboe

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