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Subject: Re: [PATCH] mm: Remove zone_id() and make use of zone_idx() in
 is_dev_zone()
To:     osalvador@techadventures.net, akpm@linux-foundation.org
Cc:     mhocko@suse.com, sfr@canb.auug.org.au, rientjes@google.com,
        pasha.tatashin@oracle.com, kemi.wang@intel.com,
        jia.he@hxt-semitech.com, ptesarik@suse.com,
        aryabinin@virtuozzo.com, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, dan.j.williams@intel.com,
        Oscar Salvador <osalvador@suse.de>
References: <20180730133718.28683-1-osalvador@techadventures.net>
From:   Vlastimil Babka <vbabka@suse.cz>
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Message-ID: <48a3c91d-14cd-ec1a-dd9f-952cc5e3d5f7@suse.cz>
Date:   Mon, 30 Jul 2018 16:07:59 +0200
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On 07/30/2018 03:37 PM, osalvador@techadventures.net wrote:
> From: Oscar Salvador <osalvador@suse.de>
> 
> is_dev_zone() is using zone_id() to check if the zone is ZONE_DEVICE.
> zone_id() looks pretty much the same as zone_idx(), and while the use of
> zone_idx() is quite spread in the kernel, zone_id() is only being
> used by is_dev_zone().
> 
> This patch removes zone_id() and makes is_dev_zone() use zone_idx()
> to check the zone, so we do not have two things with the same
> functionality around.
> 
> Signed-off-by: Oscar Salvador <osalvador@suse.de>

Agreed.

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