linux-kernel - Re: [PATCH] cfq: Remove special treatment for metadata rqs.

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Message-ID: <20110620195500.GA9696@infradead.org>
Date:	Mon, 20 Jun 2011 15:55:00 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Justin TerAvest <teravest@...gle.com>
Cc:	vgoyal@...hat.com, jaxboe@...ionio.com,
	linux-kernel@...r.kernel.org, hch@...radead.org
Subject: Re: [PATCH] cfq: Remove special treatment for metadata rqs.

On Mon, Jun 20, 2011 at 12:52:39PM -0700, Justin TerAvest wrote:
> There is no consistency among filesystems from what bios (or requests)
> are marked as being metadata. It's interesting to expose this in traces,
> but we shouldn't schedule the requests differently based on whether or
> not they're marked as being metadata.

Personally I totally agree.  If anyone can demonstrate an effect from
the current hacks we shall add them back with a special REQ_ flag just
for the boost.

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