linux-kernel - Re: [PATCH 3/3] mm: hugetlb_vmemmap: cleanup CONFIG_HUGETLB_PAGE_FREE

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Message-ID: <f25c03d7-d9e2-2ae3-4dcc-0d054a15ad2c@suse.cz>
Date:   Fri, 27 May 2022 09:39:41 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Muchun Song <songmuchun@...edance.com>, mike.kravetz@...cle.com,
        akpm@...ux-foundation.org, david@...hat.com
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        smuchun@...edance.com
Subject: Re: [PATCH 3/3] mm: hugetlb_vmemmap: cleanup
 CONFIG_HUGETLB_PAGE_FREE_VMEMMAP*

On 4/4/22 09:46, Muchun Song wrote:
> --- a/mm/hugetlb_vmemmap.c
> +++ b/mm/hugetlb_vmemmap.c
> @@ -188,7 +188,7 @@
>  #define RESERVE_VMEMMAP_NR		1U
>  #define RESERVE_VMEMMAP_SIZE		(RESERVE_VMEMMAP_NR << PAGE_SHIFT)
>  
> -DEFINE_STATIC_KEY_MAYBE(CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON,
> +DEFINE_STATIC_KEY_MAYBE(CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON,
>  			hugetlb_optimize_vmemmap_key);
>  EXPORT_SYMBOL(hugetlb_optimize_vmemmap_key);

Hi,

looks like just below here you forgot to update:

static enum vmemmap_optimize_mode vmemmap_optimize_mode =
        IS_ENABLED(CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON);

so it refers to CONFIG name that no longer exists?

Vlastimil