linux-kernel - Re: [PATCH v2] blk-mq: Remove 'running from the wrong CPU' warning

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Message-ID: <20201216153500.nevzjajj3wi7xio3@beryllium.lan>
Date:   Wed, 16 Dec 2020 16:35:00 +0100
From:   Daniel Wagner <dwagner@...e.de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     linux-block@...r.kernel.org, Christoph Hellwig <hch@...radead.org>,
        linux-kernel@...r.kernel.org, Ming Lei <ming.lei@...hat.com>
Subject: Re: [PATCH v2] blk-mq: Remove 'running from the wrong CPU' warning

On Mon, Nov 30, 2020 at 05:17:48PM +0000, Christoph Hellwig wrote:
> On Mon, Nov 30, 2020 at 11:19:21AM +0100, Daniel Wagner wrote:
> > It's guaranteed that no request is in flight when a hctx is going
> > offline. This warning is only triggered when the wq's CPU is hot
> > plugged and the blk-mq is not synced up yet.
> > 
> > As this state is temporary and the request is still processed
> > correctly, better remove the warning as this is the fast path.
> > 
> > Suggested-by: Ming Lei <ming.lei@...hat.com>
> > Signed-off-by: Daniel Wagner <dwagner@...e.de>
> 
> Looks good,
> 
> Reviewed-by: Christoph Hellwig <hch@....de>

Jens, any chance you queue this one up?

Thanks,
Daniel