linux-kernel - Re: [PATCH v2 26/28] gup: Convert compound_range_next() to gup_folio_range

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Date:   Mon, 10 Jan 2022 00:41:22 -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 26/28] gup: Convert compound_range_next() to
 gup_folio_range_next()

On Mon, Jan 10, 2022 at 04:24:04AM +0000, Matthew Wilcox (Oracle) wrote:
> +static inline struct folio *gup_folio_range_next(unsigned long i,
>  		unsigned long npages, struct page *start, unsigned int *ntails)
>  {
> -	struct page *next, *page;
> +	struct page *next;
> +	struct folio *folio;
>  	unsigned int nr = 1;
>  
>  	next = nth_page(start, i);
> +	folio = page_folio(next);

Superficial nit:  initialization next and folio at declaration time
would reada little better.

Otherwise looks good:

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