Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle

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To: "ming.lei@xxxxxxxxxx" <ming.lei@xxxxxxxxxx>, "axboe@xxxxxxxxx" <axboe@xxxxxxxxx>
Subject: Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
From: Bart Van Assche <Bart.VanAssche@xxxxxxx>
Date: Fri, 19 Jan 2018 05:09:46 +0000
Accept-language: en-US
Cc: "dm-devel@xxxxxxxxxx" <dm-devel@xxxxxxxxxx>, "hch@xxxxxxxxxxxxx" <hch@xxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "linux-block@xxxxxxxxxxxxxxx" <linux-block@xxxxxxxxxxxxxxx>, "osandov@xxxxxx" <osandov@xxxxxx>, "snitzer@xxxxxxxxxx" <snitzer@xxxxxxxxxx>
In-reply-to: <20180119023212.GA25413@ming.t460p>
Wdcipoutbound: EOP-TRUE

On Fri, 2018-01-19 at 10:32 +0800, Ming Lei wrote:
> Now most of times both NVMe and SCSI won't return BLK_STS_RESOURCE, and
> it should be DM-only which returns STS_RESOURCE so often.

That's wrong at least for SCSI. See also https://marc.info/?l=linux-block&m=151578329417076.

Bart.

Follow-Ups:
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Ming Lei

References:
- [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Ming Lei
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Bart Van Assche
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Mike Snitzer
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Bart Van Assche
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Mike Snitzer
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Bart Van Assche
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Jens Axboe
- Re: [RFC PATCH] blk-mq: fixup RESTART when queue becomes idle
  - From: Ming Lei

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