linux-kernel - Re: [patch 3/3] mm: vmscan: clean up struct scan

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Date:	Fri, 18 Jul 2014 13:53:49 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	Johannes Weiner <hannes@...xchg.org>
Cc:	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Michal Hocko <mhocko@...e.cz>,
	Minchan Kim <minchan.kim@...il.com>,
	Rik van Riel <riel@...hat.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 3/3] mm: vmscan: clean up struct scan_control

On Thu, Jul 17, 2014 at 09:26:04AM -0400, Johannes Weiner wrote:
> <SNIP>
> 
> Andrew, could you please replace this patch with the following?
> 
> ---
> From bbe8c1645c77297a96ecd5d64d659ddcd6984d03 Mon Sep 17 00:00:00 2001
> From: Johannes Weiner <hannes@...xchg.org>
> Date: Mon, 14 Jul 2014 08:51:54 -0400
> Subject: [patch] mm: vmscan: clean up struct scan_control
> 
> Reorder the members by input and output, then turn the individual
> integers for may_writepage, may_unmap, may_swap, compaction_ready,
> hibernation_mode into bit fields to save stack space:
> 
> +72/-296 -224
> kswapd                                       104     176     +72
> try_to_free_pages                             80      56     -24
> try_to_free_mem_cgroup_pages                  80      56     -24
> shrink_all_memory                             88      64     -24
> reclaim_clean_pages_from_list                168     144     -24
> mem_cgroup_shrink_node_zone                  104      80     -24
> __zone_reclaim                               176     152     -24
> balance_pgdat                                152       -    -152
> 
> Suggested-by: Mel Gorman <mgorman@...e.de>
> Signed-off-by: Johannes Weiner <hannes@...xchg.org>

Acked-by: Mel Gorman <mgorman@...e.de>

-- 
Mel Gorman
SUSE Labs
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