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Date:   Mon, 10 Jan 2022 00:33:20 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc:     linux-mm@kvack.org, John Hubbard <jhubbard@nvidia.com>,
        Christoph Hellwig <hch@infradead.org>,
        William Kucharski <william.kucharski@oracle.com>,
        linux-kernel@vger.kernel.org, Jason Gunthorpe <jgg@ziepe.ca>
Subject: Re: [PATCH v2 13/28] mm: Add folio_pincount_ptr()
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References: <20220110042406.499429-1-willy@infradead.org>
 <20220110042406.499429-14-willy@infradead.org>
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On Mon, Jan 10, 2022 at 04:23:51AM +0000, Matthew Wilcox (Oracle) wrote:
> +static inline atomic_t *folio_pincount_ptr(struct folio *folio)
> +{
> +	struct page *tail = &folio->page + 1;
> +	return &tail->compound_pincount;
> +}

And empty line after the declaration would be nice here.

Otherwise looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>