linux-kernel - Re: [PATCH v7 4/7] mm,hugetlb: Split prep_new_huge

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Message-ID: <YHWbkNqLsNht6who@dhcp22.suse.cz>
Date:   Tue, 13 Apr 2021 15:24:32 +0200
From:   Michal Hocko <mhocko@...e.com>
To:     Oscar Salvador <osalvador@...e.de>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        David Hildenbrand <david@...hat.com>,
        Muchun Song <songmuchun@...edance.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 4/7] mm,hugetlb: Split prep_new_huge_page functionality

On Tue 13-04-21 12:47:44, Oscar Salvador wrote:
[...]
> +static void prep_new_huge_page(struct hstate *h, struct page *page, int nid)
> +{
> +	__prep_new_huge_page(page);
>  	spin_lock_irq(&hugetlb_lock);
> -	h->nr_huge_pages++;
> -	h->nr_huge_pages_node[nid]++;
> +	__prep_account_new_huge_page(h, nid);
>  	spin_unlock_irq(&hugetlb_lock);
>  }

Any reason to decouple the locking from the accounting?
>  
> -- 
> 2.16.3

-- 
Michal Hocko
SUSE Labs