linux-kernel - Re: [PATCH 2/5] mm, vmscan: avoid passing in classzone_idx unnecessarily to compaction

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Message-ID: <20160718161557.GE16465@cmpxchg.org>
Date:	Mon, 18 Jul 2016 12:15:57 -0400
From:	Johannes Weiner <hannes@...xchg.org>
To:	Mel Gorman <mgorman@...hsingularity.net>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Minchan Kim <minchan@...nel.org>,
	Vlastimil Babka <vbabka@...e.cz>,
	Linux-MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/5] mm, vmscan: avoid passing in classzone_idx
 unnecessarily to compaction_ready -fix

On Fri, Jul 15, 2016 at 02:09:22PM +0100, Mel Gorman wrote:
> As pointed out by Vlastimil, there is a redundant check in shrink_zones
> since commit "mm, vmscan: avoid passing in classzone_idx unnecessarily to
> compaction_ready".  The zonelist iterator only returns zones that already
> meet the requirements of the allocation request.
> 
> This is a fix to the mmotm patch
> mm-vmscan-avoid-passing-in-classzone_idx-unnecessarily-to-compaction_ready.patch
> 
> Signed-off-by: Mel Gorman <mgorman@...hsingularity.net>

Acked-by: Johannes Weiner <hannes@...xchg.org>