linux-kernel - Re: [PATCH 3/4] slub: use __SetPageSlab function to set PG

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Message-ID: <alpine.LFD.2.02.1205181231440.3899@tux.localdomain>
Date:	Fri, 18 May 2012 12:31:49 +0300 (EEST)
From:	Pekka Enberg <penberg@...nel.org>
To:	Joonsoo Kim <js1304@...il.com>
cc:	Christoph Lameter <cl@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH 3/4] slub: use __SetPageSlab function to set PG_slab
 flag

On Fri, 18 May 2012, Joonsoo Kim wrote:

> To set page-flag, using SetPageXXXX() and __SetPageXXXX() is more
> understandable and maintainable. So change it.
> 
> Signed-off-by: Joonsoo Kim <js1304@...il.com>
> 
> diff --git a/mm/slub.c b/mm/slub.c
> index c38efce..69342fd 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -1369,7 +1369,7 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
>  
>  	inc_slabs_node(s, page_to_nid(page), page->objects);
>  	page->slab = s;
> -	page->flags |= 1 << PG_slab;
> +	__SetPageSlab(page);
>  
>  	start = page_address(page);

Applied
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