linux-kernel - Re: [PATCH 6/7] mm/gfp: make gfp_zonelist return directly and bool

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Message-ID: <alpine.DEB.2.10.1511160205010.18751@chino.kir.corp.google.com>
Date:	Mon, 16 Nov 2015 02:05:46 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Yaowei Bai <baiyaowei@...s.chinamobile.com>
cc:	akpm@...ux-foundation.org, bhe@...hat.com,
	dan.j.williams@...el.com, dave.hansen@...ux.intel.com,
	dave@...olabs.net, dhowells@...hat.com, dingel@...ux.vnet.ibm.com,
	hannes@...xchg.org, hillf.zj@...baba-inc.com, holt@....com,
	iamjoonsoo.kim@....com, joe@...ches.com, kuleshovmail@...il.com,
	mgorman@...e.de, mhocko@...e.cz, mike.kravetz@...cle.com,
	n-horiguchi@...jp.nec.com, penberg@...nel.org,
	sasha.levin@...cle.com, tj@...nel.org, tony.luck@...el.com,
	vbabka@...e.cz, vdavydov@...allels.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/7] mm/gfp: make gfp_zonelist return directly and bool

On Mon, 16 Nov 2015, Yaowei Bai wrote:

> diff --git a/include/linux/gfp.h b/include/linux/gfp.h
> index 6523109..1da03f5 100644
> --- a/include/linux/gfp.h
> +++ b/include/linux/gfp.h
> @@ -375,12 +375,9 @@ static inline enum zone_type gfp_zone(gfp_t flags)
>   * virtual kernel addresses to the allocated page(s).
>   */
>  
> -static inline int gfp_zonelist(gfp_t flags)
> +static inline bool gfp_zonelist(gfp_t flags)
>  {
> -	if (IS_ENABLED(CONFIG_NUMA) && unlikely(flags & __GFP_THISNODE))
> -		return 1;
> -
> -	return 0;
> +	return IS_ENABLED(CONFIG_NUMA) && unlikely(flags & __GFP_THISNODE);
>  }
>  
>  /*

This function is used to index into a pgdat's node_zonelists[] array, bool 
makes no sense.
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