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SubjectRE: [PATCH RFT 0/3] blk-mq: Optimise blk_mq_queue_tag_busy_iter() for shared tags
> -----Original Message-----
> From: John Garry [mailto:john.garry@huawei.com]
> Sent: Monday, December 6, 2021 3:28 PM
> To: Kashyap Desai <kashyap.desai@broadcom.com>; axboe@kernel.dk
> Cc: linux-block@vger.kernel.org; linux-kernel@vger.kernel.org;
> ming.lei@redhat.com; hare@suse.de
> Subject: Re: [PATCH RFT 0/3] blk-mq: Optimise blk_mq_queue_tag_busy_iter()
> for shared tags
>
> On 26/11/2021 11:51, John Garry wrote:
> >> This patch set improves above call trace even after disk_util=0 is set.
> > ok, fine. Thanks for testing.
> >
> > So I guess that this is a regression, and you would want this series
> > for v5.16, right? My changes were made with v5.17 in mind.
> >
> > I am not sure how Jens feels about it, since the changes are
> > significant. It would be a lot easier to argue for v5.16 if we got to
> > this point earlier in the cycle...
> >
>
> note: I will now resend for 5.17 and add your tested-by, please let me
> know if
> unhappy about that.

John - 5.17 should be OK. I am doing additional testing and so far no issue.

Tested-by: Kashyap Desai <kashyap.desai@broadcom.com>

>
> > Anyway, it would be good to have full review first, so please help
> > with that.
> >
> > @Ming, can you please give feedback on 3/3 here?
>
> Thanks and also to Hannes for the reviews.
>
> john
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