linux-kernel - Re: [PATCH] mm/hugetlb: Simplify the calculation of variables

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Date:   Tue, 26 Jan 2021 18:09:44 -0800
From:   Mike Kravetz <mike.kravetz@...cle.com>
To:     Jiapeng Zhong <abaci-bugfix@...ux.alibaba.com>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm/hugetlb: Simplify the calculation of variables

On 1/25/21 10:44 PM, Jiapeng Zhong wrote:
> Fix the following coccicheck warnings:
> 
> ./mm/hugetlb.c:3372:20-22: WARNING !A || A && B is equivalent to
> !A || B.
> 
> Reported-by: Abaci Robot <abaci@...ux.alibaba.com>
> Signed-off-by: Jiapeng Zhong <abaci-bugfix@...ux.alibaba.com>
> ---
>  mm/hugetlb.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

Thanks,

Reviewed-by: Mike Kravetz <mike.kravetz@...cle.com>
-- 
Mike Kravetz

> 
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index cbf32d2..5e6a6e7 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -3367,8 +3367,7 @@ static unsigned int allowed_mems_nr(struct hstate *h)
>  	mpol_allowed = policy_nodemask_current(gfp_mask);
>  
>  	for_each_node_mask(node, cpuset_current_mems_allowed) {
> -		if (!mpol_allowed ||
> -		    (mpol_allowed && node_isset(node, *mpol_allowed)))
> +		if (!mpol_allowed || node_isset(node, *mpol_allowed))
>  			nr += array[node];
>  	}
>  
>