linux-kernel - Re: [PATCH mm-unstable 1/8] mm/hugetlb: convert isolate

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Date:   Tue, 3 Jan 2023 20:56:51 +0000
From:   Matthew Wilcox <willy@...radead.org>
To:     Sidhartha Kumar <sidhartha.kumar@...cle.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        akpm@...ux-foundation.org, songmuchun@...edance.com,
        mike.kravetz@...cle.com, tsahu@...ux.ibm.com, jhubbard@...dia.com
Subject: Re: [PATCH mm-unstable 1/8] mm/hugetlb: convert isolate_hugetlb to
 folios

On Tue, Jan 03, 2023 at 01:13:33PM -0600, Sidhartha Kumar wrote:
> +++ b/include/linux/mm.h
> @@ -775,6 +775,11 @@ static inline bool get_page_unless_zero(struct page *page)
>  	return page_ref_add_unless(page, 1, 0);
>  }
>  
> +static inline bool get_folio_unless_zero(struct folio *folio)
> +{
> +	return folio_ref_add_unless(folio, 1, 0);
> +}
> +

I think that's folio_try_get() in linux/page_ref.h.

The rest looks good though.