From: Michal Hocko <mhocko@suse.cz>
To: Chen Baozi <baozich@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
cgroups@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: [PATCH] memcg: remove the unnecessary MEM_CGROUP_STAT_DATA
Date: Mon, 28 May 2012 15:39:18 +0200 [thread overview]
Message-ID: <20120528133918.GA22185@tiehlicka.suse.cz> (raw)
In-Reply-To: <1337933501-3985-1-git-send-email-baozich@gmail.com>
On Fri 25-05-12 16:11:41, Chen Baozi wrote:
> Since MEM_CGROUP_ON_MOVE has been removed, it comes to be redudant
> to hold MEM_CGROUP_STAT_DATA to mark the end of data requires
> synchronization.
A similar patch has been already posted by Johannes 2 weeks ago
(http://www.gossamer-threads.com/lists/linux/kernel/1535888) and it
should appear in -next soonish.
>
> Signed-off-by: Chen Baozi <baozich@gmail.com>
> ---
> mm/memcontrol.c | 3 +--
> 1 files changed, 1 insertions(+), 2 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index f342778..446ca94 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -88,7 +88,6 @@ enum mem_cgroup_stat_index {
> MEM_CGROUP_STAT_RSS, /* # of pages charged as anon rss */
> MEM_CGROUP_STAT_FILE_MAPPED, /* # of pages charged as file rss */
> MEM_CGROUP_STAT_SWAPOUT, /* # of pages, swapped out */
> - MEM_CGROUP_STAT_DATA, /* end of data requires synchronization */
> MEM_CGROUP_STAT_NSTATS,
> };
>
> @@ -2139,7 +2138,7 @@ static void mem_cgroup_drain_pcp_counter(struct mem_cgroup *memcg, int cpu)
> int i;
>
> spin_lock(&memcg->pcp_counter_lock);
> - for (i = 0; i < MEM_CGROUP_STAT_DATA; i++) {
> + for (i = 0; i < MEM_CGROUP_STAT_NSTATS; i++) {
> long x = per_cpu(memcg->stat->count[i], cpu);
>
> per_cpu(memcg->stat->count[i], cpu) = 0;
> --
> 1.7.1
>
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
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> see: http://www.linux-mm.org/ .
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--
Michal Hocko
SUSE Labs
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9
Czech Republic
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
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Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2012-05-28 13:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-25 8:11 Chen Baozi
2012-05-28 13:39 ` Michal Hocko [this message]
2012-05-28 17:22 ` Chen Baozi
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