linux-kernel - Re: [PATCH] mm: remove zone->prev

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Date:	Tue, 10 Feb 2009 11:42:22 +0100
From:	Johannes Weiner <hannes@...xchg.org>
To:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
Cc:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, Rik van Riel <riel@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm: remove zone->prev_prioriy

On Tue, Feb 10, 2009 at 06:42:30PM +0900, KOSAKI Motohiro wrote:
> 
> KAMEZAWA Hiroyuki sugessted to remove zone->prev_priority.
> it's because Split-LRU VM doesn't use this parameter at all.
> 
> 
> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> ---
>  include/linux/memcontrol.h |   27 -------------------------
>  include/linux/mmzone.h     |   15 --------------
>  mm/memcontrol.c            |   31 -----------------------------
>  mm/page_alloc.c            |    2 -
>  mm/vmscan.c                |   48 ++-------------------------------------------
>  mm/vmstat.c                |    2 -
>  6 files changed, 3 insertions(+), 122 deletions(-)

> Index: b/include/linux/memcontrol.h
> ===================================================================
> --- a/include/linux/memcontrol.h
> +++ b/include/linux/memcontrol.h
> @@ -88,14 +88,7 @@ extern void mem_cgroup_end_migration(str
>  /*
>   * For memory reclaim.
>   */
> -extern int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem);

This bit crept in from the next patch, I think.

>  extern long mem_cgroup_reclaim_imbalance(struct mem_cgroup *mem);
> -
> -extern int mem_cgroup_get_reclaim_priority(struct mem_cgroup *mem);
> -extern void mem_cgroup_note_reclaim_priority(struct mem_cgroup *mem,
> -							int priority);
> -extern void mem_cgroup_record_reclaim_priority(struct mem_cgroup *mem,
> -							int priority);
>  int mem_cgroup_inactive_anon_is_low(struct mem_cgroup *memcg);
>  unsigned long mem_cgroup_zone_nr_pages(struct mem_cgroup *memcg,
>  				       struct zone *zone,
> @@ -209,31 +202,11 @@ static inline void mem_cgroup_end_migrat
>  {
>  }
>  
> -static inline int mem_cgroup_calc_mapped_ratio(struct mem_cgroup *mem)
> -{
> -	return 0;
> -}
> -

:)

Looks good to me otherwise.

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