linux-kernel - Re: [PATCH 07/10] mm/hugetlb: a page from buddy is not on any list

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Message-ID: <20200807130600.GR14854@MiWiFi-R3L-srv>
Date:   Fri, 7 Aug 2020 21:06:00 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Wei Yang <richard.weiyang@...ux.alibaba.com>
Cc:     mike.kravetz@...cle.com, akpm@...ux-foundation.org,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 07/10] mm/hugetlb: a page from buddy is not on any list

On 08/07/20 at 05:12pm, Wei Yang wrote:
> The page allocated from buddy is not on any list, so just use list_add()
> is enough.
> 
> Signed-off-by: Wei Yang <richard.weiyang@...ux.alibaba.com>
> ---
>  mm/hugetlb.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index fb09e5a83c39..b8e844911b5a 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -2430,7 +2430,7 @@ struct page *alloc_huge_page(struct vm_area_struct *vma,
>  			h->resv_huge_pages--;
>  		}
>  		spin_lock(&hugetlb_lock);
> -		list_move(&page->lru, &h->hugepage_activelist);
> +		list_add(&page->lru, &h->hugepage_activelist);

Looks good to me.

Reviewed-by: Baoquan He <bhe@...hat.com>

>  		/* Fall through */
>  	}
>  	hugetlb_cgroup_commit_charge(idx, pages_per_huge_page(h), h_cg, page);
> -- 
> 2.20.1 (Apple Git-117)
> 
>