On 03/27/2018 02:01 PM, Ming Lei wrote:
> Hi Stefan,
>
> On Tue, Mar 27, 2018 at 12:04:20PM +0200, Stefan Haberland wrote:
>> Hi,
>>
>> I get the following warning in __blk_mq_delay_run_hw_queue when the
>> scheduler is set to mq-deadline for DASD devices on s390.
>>
>> What I see is that for wh
This warning is harmless, please try the following patch:
--
From 7b2b5139bfef80f44d1b1424e09ab35b715fbfdb Mon Sep 17 00:00:00 2001
From: Ming Lei
Date: Tue, 27 Mar 2018 19:54:23 +0800
Subject: [PATCH] blk-mq: only run mapped hw queues in blk_mq_run_hw_queues()
From commit 20e4d813931961fe
Hi Stefan,
On Tue, Mar 27, 2018 at 12:04:20PM +0200, Stefan Haberland wrote:
> Hi,
>
> I get the following warning in __blk_mq_delay_run_hw_queue when the
> scheduler is set to mq-deadline for DASD devices on s390.
>
> What I see is that for whatever reason there is a hctx nr 0 which has no
> hc
Hi,
I get the following warning in __blk_mq_delay_run_hw_queue when the
scheduler is set to mq-deadline for DASD devices on s390.
What I see is that for whatever reason there is a hctx nr 0 which has no
hctx->tags pointer set.
From my observation it is always hctx nr 0 which has a tags NULL
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