linux-kernel - Re: [PATCH linux-next] mm/slab_common: Remove the unneeded result variable

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Date:   Tue, 23 Aug 2022 16:04:50 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     cgel.zte@...il.com, 42.hyeyoo@...il.com
Cc:     cl@...ux.com, rientjes@...gle.com, iamjoonsoo.kim@....com,
        roman.gushchin@...ux.dev, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, ye xingchen <ye.xingchen@....com.cn>,
        Zeal Robot <zealci@....com.cn>
Subject: Re: [PATCH linux-next] mm/slab_common: Remove the unneeded result
 variable

On 8/23/22 09:52, cgel.zte@...il.com wrote:
> From: ye xingchen <ye.xingchen@....com.cn>
> 
> Return the value from __kmem_cache_shrink() directly instead of storing it
>  in another redundant variable.
> 
> Reported-by: Zeal Robot <zealci@....com.cn>
> Signed-off-by: ye xingchen <ye.xingchen@....com.cn>

Thanks, added to slab.git for-6.1/trivial

> ---
>  mm/slab_common.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/mm/slab_common.c b/mm/slab_common.c
> index 17996649cfe3..0dfa3cfb6be5 100644
> --- a/mm/slab_common.c
> +++ b/mm/slab_common.c
> @@ -495,13 +495,9 @@ EXPORT_SYMBOL(kmem_cache_destroy);
>   */
>  int kmem_cache_shrink(struct kmem_cache *cachep)
>  {
> -	int ret;
> -
> -
>  	kasan_cache_shrink(cachep);
> -	ret = __kmem_cache_shrink(cachep);
>  
> -	return ret;
> +	return __kmem_cache_shrink(cachep);
>  }
>  EXPORT_SYMBOL(kmem_cache_shrink);
>