linux-kernel - Re: [PATCH v2 19/28] gup: Convert try_grab_page() to call try_grab

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Message-ID: <9f5369d2-a2e4-f759-7b03-562ee215f17a@nvidia.com>
Date:   Mon, 10 Jan 2022 23:01:13 -0800
From:   John Hubbard <jhubbard@...dia.com>
To:     "Matthew Wilcox (Oracle)" <willy@...radead.org>, linux-mm@...ck.org
Cc:     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 19/28] gup: Convert try_grab_page() to call
 try_grab_folio()

On 1/9/22 20:23, Matthew Wilcox (Oracle) wrote:
> try_grab_page() only cares about success or failure, not about the
> type returned.
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
> ---
>   mm/gup.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: John Hubbard <jhubbard@...dia.com>


thanks,
-- 
John Hubbard
NVIDIA

> 
> diff --git a/mm/gup.c b/mm/gup.c
> index 20703de2f107..c3e514172eaf 100644
> --- a/mm/gup.c
> +++ b/mm/gup.c
> @@ -192,7 +192,7 @@ bool __must_check try_grab_page(struct page *page, unsigned int flags)
>   	if (!(flags & (FOLL_GET | FOLL_PIN)))
>   		return true;
>   
> -	return try_grab_compound_head(page, 1, flags);
> +	return try_grab_folio(page, 1, flags);
>   }
>   
>   /**