linux-kernel - Re: [PATCH] mm/mm_init.c: drop node_start_pfn from adjust_zone_range_for_zone

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Message-ID: <397768bc-b861-1f6e-4c12-8fbbdff0900f@arm.com>
Date:   Wed, 19 Jul 2023 13:18:53 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     Haifeng Xu <haifeng.xu@...pee.com>, rppt@...nel.org
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/mm_init.c: drop node_start_pfn from
 adjust_zone_range_for_zone_movable()



On 7/17/23 12:28, Haifeng Xu wrote:
> node_start_pfn is not used in adjust_zone_range_for_zone_movable(), so
> it is pointless to waste a function argument. Drop the parameter.
> 
> Signed-off-by: Haifeng Xu <haifeng.xu@...pee.com>

Reviewed-by: Anshuman Khandual <anshuman.khandual@....com>

> ---
>  mm/mm_init.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
> 
> diff --git a/mm/mm_init.c b/mm/mm_init.c
> index a313d1828a6c..23d50541e1f7 100644
> --- a/mm/mm_init.c
> +++ b/mm/mm_init.c
> @@ -1105,7 +1105,6 @@ void __ref memmap_init_zone_device(struct zone *zone,
>   */
>  static void __init adjust_zone_range_for_zone_movable(int nid,
>  					unsigned long zone_type,
> -					unsigned long node_start_pfn,
>  					unsigned long node_end_pfn,
>  					unsigned long *zone_start_pfn,
>  					unsigned long *zone_end_pfn)
> @@ -1222,9 +1221,8 @@ static unsigned long __init zone_spanned_pages_in_node(int nid,
>  	/* Get the start and end of the zone */
>  	*zone_start_pfn = clamp(node_start_pfn, zone_low, zone_high);
>  	*zone_end_pfn = clamp(node_end_pfn, zone_low, zone_high);
> -	adjust_zone_range_for_zone_movable(nid, zone_type,
> -				node_start_pfn, node_end_pfn,
> -				zone_start_pfn, zone_end_pfn);
> +	adjust_zone_range_for_zone_movable(nid, zone_type, node_end_pfn,
> +					   zone_start_pfn, zone_end_pfn);
>  
>  	/* Check that this node has pages within the zone's required range */
>  	if (*zone_end_pfn < node_start_pfn || *zone_start_pfn > node_end_pfn)