Re: [PATCH v2 02/10] mm, hugetlb: remove err label in dequeue_huge_page_vma()

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On Mon 22-07-13 17:36:23, Joonsoo Kim wrote:
> This label is not needed now, because there is no error handling
> except returing NULL.
> 
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
> 
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index fc4988c..d87f70b 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -546,11 +546,11 @@ static struct page *dequeue_huge_page_vma(struct hstate *h,
>  	 */
>  	if (!vma_has_reserves(vma) &&
>  			h->free_huge_pages - h->resv_huge_pages == 0)
> -		goto err;
> +		return NULL;
>  
>  	/* If reserves cannot be used, ensure enough pages are in the pool */
>  	if (avoid_reserve && h->free_huge_pages - h->resv_huge_pages == 0)
> -		goto err;
> +		return NULL;
>  
>  retry_cpuset:
>  	cpuset_mems_cookie = get_mems_allowed();
> @@ -573,9 +573,6 @@ retry_cpuset:
>  	if (unlikely(!put_mems_allowed(cpuset_mems_cookie) && !page))
>  		goto retry_cpuset;
>  	return page;
> -
> -err:
> -	return NULL;

This doesn't give us anything IMO. It is a matter of taste but if there
is no cleanup I would prefer no err label.
-- 
Michal Hocko
SUSE Labs

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