linux-kernel - Re: [PATCH V3] NVMe: basic conversion to blk-mq

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Date:	Thu, 29 May 2014 17:12:37 -0600
From:	Jens Axboe <axboe@...nel.dk>
To:	Keith Busch <keith.busch@...el.com>
CC:	Matias Bjørling <m@...rling.me>,
	willy@...ux.intel.com, sbradshaw@...ron.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH V3] NVMe: basic conversion to blk-mq

On 05/29/2014 05:06 PM, Jens Axboe wrote:
> Ah I see, yes that code apparently got axed. The attached patch brings
> it back. Totally untested, I'll try and synthetically hit it to ensure
> that it does work. Note that it currently does unmap and iod free, so
> the request comes back pristine. We could preserve that if we really
> wanted to, I'm guessing it's not a big deal.

And another totally untested patch that retains the iod and dma mapping
on the requeue event. Again, probably not a big deal, I'm assuming these
happen rarely, but it's simple enough to do.

-- 
Jens Axboe


View attachment "nvme-retry-v2.patch" of type "text/x-patch" (1526 bytes)