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Subject: Re: [PATCH 01/27] mm, page_alloc: Use ac->classzone_idx instead of
 zone_idx(preferred_zone)
To: Mel Gorman <mgorman@techsingularity.net>, Linux-MM <linux-mm@kvack.org>
References: <1456239890-20737-1-git-send-email-mgorman@techsingularity.net>
 <1456239890-20737-2-git-send-email-mgorman@techsingularity.net>
Cc: Rik van Riel <riel@surriel.com>, Johannes Weiner <hannes@cmpxchg.org>,
        LKML <linux-kernel@vger.kernel.org>
From: Vlastimil Babka <vbabka@suse.cz>
Message-ID: <56D813DD.4050605@suse.cz>
Date: Thu, 3 Mar 2016 11:37:17 +0100
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On 02/23/2016 04:04 PM, Mel Gorman wrote:
> ac->classzone_idx is determined by the index of the preferred zone and cached
> to avoid repeated calculations. wake_all_kswapds() should use it instead of
> using zone_idx() within a loop.
> 
> Signed-off-by: Mel Gorman <mgorman@techsingularity.net>

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