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Date:	Wed, 5 Dec 2007 11:15:48 +0100
From:	Jens Axboe <>
To:	Nick Piggin <>
Cc:	Aaron Carroll <>,,
	Peter Chubb <>
Subject: Re: [PATCH] as-iosched: fix write batch start point

On Wed, Dec 05 2007, Nick Piggin wrote:
> On Wed, Dec 05, 2007 at 09:07:07PM +1100, Aaron Carroll wrote:
> > New write batches currently start from where the last one completed.
> > We have no idea where the head is after switching batches, so this
> > makes little sense.  Instead, start the next batch from the request
> > with the earliest deadline in the hope that we avoid a deadline
> > expiry later on.
> > 
> > Signed-off-by: Aaron Carroll <>
> I think this seems reasonable. What's deadline doing in this case?
> They should probably be kept in synch where possible...

Aaron sent a similar patch for deadline a while ago, so this just
matches them up again. I acked that patch, it makes a lot of sense to

Jens Axboe

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