linux-kernel - Re: [PATCH 1/3] mm: memcg/slab: remove unused argument by charge_slab

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Message-ID: <1d31552e-428a-566a-6160-c8dd6f24f0c2@suse.cz>
Date:   Wed, 8 Jul 2020 13:16:16 +0200
From:   Vlastimil Babka <vbabka@...e.cz>
To:     Roman Gushchin <guro@...com>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Shakeel Butt <shakeelb@...gle.com>, linux-mm@...ck.org,
        kernel-team@...com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] mm: memcg/slab: remove unused argument by
 charge_slab_page()

On 7/7/20 7:36 PM, Roman Gushchin wrote:
> charge_slab_page() is not using the gfp argument anymore,
> remove it.
> 
> Signed-off-by: Roman Gushchin <guro@...com>

Acked-by: Vlastimil Babka <vbabka@...e.cz>

> ---
>  mm/slab.c | 2 +-
>  mm/slab.h | 3 +--
>  mm/slub.c | 2 +-
>  3 files changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/mm/slab.c b/mm/slab.c
> index 2850fe3c5fb8..fafd46877504 100644
> --- a/mm/slab.c
> +++ b/mm/slab.c
> @@ -1379,7 +1379,7 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags,
>  		return NULL;
>  	}
>  
> -	charge_slab_page(page, flags, cachep->gfporder, cachep);
> +	charge_slab_page(page, cachep->gfporder, cachep);
>  	__SetPageSlab(page);
>  	/* Record if ALLOC_NO_WATERMARKS was set when allocating the slab */
>  	if (sk_memalloc_socks() && page_is_pfmemalloc(page))
> diff --git a/mm/slab.h b/mm/slab.h
> index ab172dca8ce2..704a65713f81 100644
> --- a/mm/slab.h
> +++ b/mm/slab.h
> @@ -440,8 +440,7 @@ static inline struct kmem_cache *virt_to_cache(const void *obj)
>  	return page->slab_cache;
>  }
>  
> -static __always_inline void charge_slab_page(struct page *page,
> -					     gfp_t gfp, int order,
> +static __always_inline void charge_slab_page(struct page *page, int order,
>  					     struct kmem_cache *s)
>  {
>  	mod_node_page_state(page_pgdat(page), cache_vmstat_idx(s),
> diff --git a/mm/slub.c b/mm/slub.c
> index 6769f5f802e9..d9b33a935e58 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -1621,7 +1621,7 @@ static inline struct page *alloc_slab_page(struct kmem_cache *s,
>  		page = __alloc_pages_node(node, flags, order);
>  
>  	if (page)
> -		charge_slab_page(page, flags, order, s);
> +		charge_slab_page(page, order, s);
>  
>  	return page;
>  }
>