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Date:   Mon, 13 Sep 2021 07:09:51 +0100
From:   Christoph Hellwig <hch@infradead.org>
To:     Praveen Kumar <kumarpraveen@linux.microsoft.com>
Cc:     Chaitanya Kulkarni <chaitanyak@nvidia.com>,
        "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
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Subject: Re: [PATCH] blk-mq: export blk_mq_submit_bio symbol
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On Mon, Sep 13, 2021 at 09:54:54AM +0530, Praveen Kumar wrote:
> >> +EXPORT_SYMBOL_GPL(blk_mq_submit_bio);
> >>
> > 
> > Where is the code that used this API ?
> > 
> 
> Thanks Chaitanya for your response. Please check my response to Christoph.
> That should give overall understanding of the use-case.

Which really doesn't matter, while you keep ingoring the relevant
question.  If you code is not upstream or at least actively being
submitted upstream your questions have no relevance whatsoever.
If you do not undertand that basic fact your are in the wrong place
here.