linux-kernel - Re: [PATCH v1 24/29] mm/page-flags: remove folio_mapping

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Message-ID: <b830f284-bdb4-4ec5-a93b-6911cb53823a@lucifer.local>
Date: Tue, 1 Jul 2025 14:03:30 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linux-doc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
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        Shakeel Butt <shakeel.butt@...ux.dev>
Subject: Re: [PATCH v1 24/29] mm/page-flags: remove folio_mapping_flags()

On Mon, Jun 30, 2025 at 03:00:05PM +0200, David Hildenbrand wrote:
> It's unused and the page counterpart is gone, so let's remove it.
>
> Reviewed-by: Zi Yan <ziy@...dia.com>
> Signed-off-by: David Hildenbrand <david@...hat.com>

LGTM, so:

Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>

> ---
>  include/linux/page-flags.h | 5 -----
>  1 file changed, 5 deletions(-)
>
> diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
> index f539bd5e14200..b42986a578b71 100644
> --- a/include/linux/page-flags.h
> +++ b/include/linux/page-flags.h
> @@ -718,11 +718,6 @@ PAGEFLAG_FALSE(VmemmapSelfHosted, vmemmap_self_hosted)
>  #define PAGE_MAPPING_KSM	(PAGE_MAPPING_ANON | PAGE_MAPPING_ANON_KSM)
>  #define PAGE_MAPPING_FLAGS	(PAGE_MAPPING_ANON | PAGE_MAPPING_ANON_KSM)
>
> -static __always_inline bool folio_mapping_flags(const struct folio *folio)
> -{
> -	return ((unsigned long)folio->mapping & PAGE_MAPPING_FLAGS) != 0;
> -}
> -
>  static __always_inline bool folio_test_anon(const struct folio *folio)
>  {
>  	return ((unsigned long)folio->mapping & PAGE_MAPPING_ANON) != 0;
> --
> 2.49.0
>