linux-kernel - Re: [PATCH] mm/hugetlb: Make __NR_USED

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Message-ID: <Z02N5PnYa_S_ISeg@localhost.localdomain>
Date: Mon, 2 Dec 2024 11:37:24 +0100
From: Oscar Salvador <osalvador@...e.de>
To: Anshuman Khandual <anshuman.khandual@....com>
Cc: linux-mm@...ck.org, Muchun Song <muchun.song@...ux.dev>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/hugetlb: Make __NR_USED_SUBPAGE check conditional

On Mon, Dec 02, 2024 at 02:37:28PM +0530, Anshuman Khandual wrote:
> The HugeTLB order check against __NR_USED_SUBPAGE is required only when
> HUGETLB_PAGE_OPTIMIZE_VMEMMAP is enabled. Hence BUG_ON() trigger should
> happen only when applicable.
> 
> Cc: Muchun Song <muchun.song@...ux.dev>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: linux-mm@...ck.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
> ---
...
> +
>  	BUG_ON(hugetlb_max_hstate >= HUGE_MAX_HSTATE);
> +#ifdef HUGETLB_PAGE_OPTIMIZE_VMEMMAP

 #ifdef CONFIG_HUGETLB_PAGE_OPTIMIZE_VMEMMAP ?
 

-- 
Oscar Salvador
SUSE Labs