Re: [PATCH] block-mq: don't re-queue if we get a queue error

On 03/28/2017 02:37 PM, Josef Bacik wrote:

When try to issue a request directly and we fail we will requeue the
request, but call blk_mq_end_request() as well.  This leads to the
completed request being on a queuelist and getting ended twice, which
causes list corruption in schedulers and other shenanigans.

I think this is purely a cosmetic issue, as it should cause no
corruption. But it doesn't make sense to issue a requeue trace,
for instance, if we're just going to end the IO anyway. I have
applied it for 4.12.

-- 
Jens Axboe