linux-kernel - Re: [PATCH RFT] blk-mq: optimize queue tag busy iter for shared

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Date:   Wed, 22 Dec 2021 11:35:22 +0000
From:   John Garry <john.garry@...wei.com>
To:     Kashyap Desai <kashyap.desai@...adcom.com>, <axboe@...nel.dk>
CC:     <linux-block@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <ming.lei@...hat.com>,
        Sathya Prakash Veerichetty <sathya.prakash@...adcom.com>
Subject: Re: [PATCH RFT] blk-mq: optimize queue tag busy iter for shared_tags

On 22/12/2021 11:20, Kashyap Desai wrote:
> Yes, above is the same changes I was looking for. I did very basic mistake.
> I applied your above commit while doing megaraid_sas testing.
>   While I move to mpi3mr testing, I did not apply your patch set. 

But I did not think that my patch would help mpi3mr since it does not 
use host_tagset.

> We can drop
> request of this RFT since I tested above series and it serve the same
> purpose.

ok, fine.

And just to confirm, do you now think that we need to fix any older 
kernel with some backport of my changes? I think that we would just need 
to consider 5.16 (when it becomes stable), 5.15, and and 5.10

Thanks,
John