[PATCH v6] NVMe: conversion to blk-mq

[Ming Lei]

On Mon, Jun 9, 2014 at 3:50 PM, Ming Lei <tom.leiming at gmail.com> wrote:
> On Mon, Jun 9, 2014 at 2:00 PM, Matias Bjørling <m at bjorling.me> wrote:
>> On Mon, Jun 9, 2014 at 6:35 AM, Ming Lei <tom.leiming at gmail.com> wrote:
>>> On Fri, Jun 6, 2014 at 8:20 PM, Matias Bjørling <m at bjorling.me> wrote:
>>>> This converts the current NVMe driver to utilize the blk-mq layer.
>>>
>>> Looks it can't be applied cleanly against 3.15-rc8 + Jens's for-linux
>>> branch, when I fix the conflict manually, below failure is triggered:
>>>
>>> [  487.696057] nvme 0000:00:07.0: Cancelling I/O 202 QID 1
>>> [  487.699005] nvme 0000:00:07.0: Aborting I/O 202 QID 1
>>> [  487.704074] nvme 0000:00:07.0: Cancelling I/O 202 QID 1
>>> [  487.717881] nvme 0000:00:07.0: Aborting I/O 202 QID 1
>>> [  487.736093] end_request: I/O error, dev nvme0n1, sector 91532352
>>> [  487.747378] nvme 0000:00:07.0: completed id 0 twice on queue 0
>>>
>>>
>>> when running fio randread(libaio, iodepth:64) with more than 3 jobs.
>>>
>>> And looks no such failure when jobs is 1 or 2.
>>
>> Can you try with the nvmemq_review branch at
>>
>> https://github.com/MatiasBjorling/linux-collab.git
>
> Looks git-pull from the branch does work, so you
> might have out-of-tree patches.

After pulling from your tree, the problem still persists.

I test nvme over qemu, and both linus/next tree can
work well with qemu nvme.


Thanks,
-- 
Ming Lei