linux-kernel - Re: [PATCH] blk-mq: kick requeue list in blk_mq_requeue

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Message-ID: <20140610124508.GA5671@lst.de>
Date:	Tue, 10 Jun 2014 14:45:08 +0200
From:	Christoph Hellwig <hch@....de>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	Jens Axboe <axboe@...nel.dk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Matias Bjørling <m@...rling.me>
Subject: Re: [PATCH] blk-mq: kick requeue list in blk_mq_requeue_request()

On Tue, Jun 10, 2014 at 07:45:47PM +0800, Ming Lei wrote:
> OK, but the API name is a bit confusing, and that is easy to cause
> misuse, like in nvme.
> 
> Also requeue one request in completion handler may be a
> common case, so maybe it is better to let blk_mq_requeue_request()
> handle both adding to request list and kicking off, and introduce
> blk_mq_prep_requeue_req()(or better name) to batch operations.

For now please just add some documentation.  I'm happy to revisit
these once we have a few user in tree, but for now I'd like to keep
blk-mq a little more stable to not impact the merges of the major
users.
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