linux-kernel - Re: [PATCH 1/5 v2] blk-mq: Add prep/unprep support

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Message-ID: <20150417174630.GA10249@infradead.org>
Date:	Fri, 17 Apr 2015 10:46:30 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Matias Bj?rling <m@...rling.me>
Cc:	Christoph Hellwig <hch@...radead.org>, axboe@...com,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-nvme@...ts.infradead.org, keith.busch@...el.com,
	javier@...etta.io
Subject: Re: [PATCH 1/5 v2] blk-mq: Add prep/unprep support

On Fri, Apr 17, 2015 at 10:15:46AM +0200, Matias Bj?rling wrote:
> Just the prep/unprep, or other pieces as well?

All of it - it's functionality that lies logically below the block
layer, so that's where it should be handled.

In fact it should probably work similar to the mtd subsystem - that is
have it's own API for low level drivers, and just export a block driver
as one consumer on the top side.

> In the future, applications can have an API to get/put flash block directly.
> (using the blk_nvm_[get/put]_blk interface).

s/application/filesystem/?
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