linux-kernel - Re: [PATCH v2 14/28] mm: Convert page_maybe_dma

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Message-ID: <YdvvaP1weSjgsuDj@infradead.org>
Date:   Mon, 10 Jan 2022 00:33:44 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>
Cc:     linux-mm@...ck.org, John Hubbard <jhubbard@...dia.com>,
        Christoph Hellwig <hch@...radead.org>,
        William Kucharski <william.kucharski@...cle.com>,
        linux-kernel@...r.kernel.org, Jason Gunthorpe <jgg@...pe.ca>
Subject: Re: [PATCH v2 14/28] mm: Convert page_maybe_dma_pinned() to use a
 folio

On Mon, Jan 10, 2022 at 04:23:52AM +0000, Matthew Wilcox (Oracle) wrote:
> Replace three calls to compound_head() with one.  This removes the last
> user of compound_pincount(), so remove that helper too.

Looks good,

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