linux-kernel - Re: [PATCH 1/1] block: rework flush sequencing for blk-mq

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Message-ID: <20140210103315.GB28396@infradead.org>
Date:	Mon, 10 Feb 2014 02:33:15 -0800
From:	Christoph Hellwig <hch@...radead.org>
To:	Shaohua Li <shli@...nel.org>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] block: rework flush sequencing for blk-mq

On Sat, Feb 08, 2014 at 08:55:07AM +0800, Shaohua Li wrote:
> Yep, none driver needs it. But reverse mapping is the one of the points we use
> tag, so better we prepare it.

I don't think adding unused code to tree for a future driver is a good
idea, although I'm happy to help out with the functionality as soon
as the need arrives.

In the meantime we really need something like this fix to allow
non-trivial drivers to use blk-mq.
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