linux-kernel - Re: [PATCH] mm: Drop unused set_pte

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Message-ID: <0a23ba16-5a7a-4f8d-bc5a-887bbe42c77e@redhat.com>
Date: Tue, 10 Sep 2024 11:21:49 +0200
From: David Hildenbrand <david@...hat.com>
To: Anshuman Khandual <anshuman.khandual@....com>, linux-mm@...ck.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 Ryan Roberts <ryan.roberts@....com>, "Mike Rapoport (IBM)"
 <rppt@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: Drop unused set_pte_safe()

On 10.09.24 11:04, Anshuman Khandual wrote:
> All set_pte_safe() usage have been dropped after the commit eccd906484d1
> ("x86/mm: Do not use set_{pud, pmd}_safe() when splitting a large page")
> This just drops now unused helper set_pte_safe().
> 
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: David Hildenbrand <david@...hat.com>
> Cc: Ryan Roberts <ryan.roberts@....com>
> Cc: "Mike Rapoport (IBM)" <rppt@...nel.org>
> Cc: linux-mm@...ck.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
> ---
>   include/linux/pgtable.h | 6 ------
>   1 file changed, 6 deletions(-)
> 
> diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
> index 2a6a3cccfc36..aeabbf0db7c8 100644
> --- a/include/linux/pgtable.h
> +++ b/include/linux/pgtable.h
> @@ -1058,12 +1058,6 @@ static inline int pgd_same(pgd_t pgd_a, pgd_t pgd_b)
>    * same value. Otherwise, use the typical "set" helpers and flush the
>    * TLB.
>    */
> -#define set_pte_safe(ptep, pte) \
> -({ \
> -	WARN_ON_ONCE(pte_present(*ptep) && !pte_same(*ptep, pte)); \
> -	set_pte(ptep, pte); \
> -})
> -
>   #define set_pmd_safe(pmdp, pmd) \
>   ({ \
>   	WARN_ON_ONCE(pmd_present(*pmdp) && !pmd_same(*pmdp, pmd)); \

Reviewed-by: David Hildenbrand <david@...hat.com>

-- 
Cheers,

David / dhildenb