linux-kernel - Re: [PATCH v2 20/28] gup: Convert gup_pte

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Message-ID: <YdvwPpGjpViLMCXy@infradead.org>
Date:   Mon, 10 Jan 2022 00:37:19 -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 20/28] gup: Convert gup_pte_range() to use a folio

On Mon, Jan 10, 2022 at 04:23:58AM +0000, Matthew Wilcox (Oracle) wrote:
> We still call try_grab_folio() once per PTE; a future patch could
> optimise to just adjust the reference count for each page within
> the folio.

Looks good,

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