linux-kernel - Re: [PATCH 07/27] mm, vmscan: Remove balance gap

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Message-ID: <686f13b7-a80b-d7e2-a057-6e5822866648@suse.cz>
Date:	Wed, 15 Jun 2016 16:28:03 +0200
From:	Vlastimil Babka <vbabka@...e.cz>
To:	Mel Gorman <mgorman@...hsingularity.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>
Cc:	Rik van Riel <riel@...riel.com>,
	Johannes Weiner <hannes@...xchg.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 07/27] mm, vmscan: Remove balance gap

On 06/09/2016 08:04 PM, Mel Gorman wrote:
> The balance gap was introduced to apply equal pressure to all zones when
> reclaiming for a higher zone. With node-based LRU, the need for the balance
> gap is removed and the code is dead so remove it.
>
> Signed-off-by: Mel Gorman <mgorman@...hsingularity.net>

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

> ---
>  mm/vmscan.c | 19 ++++++++-----------
>  1 file changed, 8 insertions(+), 11 deletions(-)

Also this:
include/linux/swap.h:#define KSWAPD_ZONE_BALANCE_GAP_RATIO 100