From: Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
To: KAMEZAWA Hiroyuki
<kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
Cc: "linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org"
<linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
"cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Michal Hocko <mhocko-AlSwsSmVLrQ@public.gmane.org>,
Johannes Weiner <hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org>,
Frederic Weisbecker
<fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Han Ying <yinghan-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>,
Glauber Costa <glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>,
Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"Aneesh Kumar K.V"
<aneesh.kumar-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org>,
Hiroyuki Kamezawa
<kamezawa.hiroyuki-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Linux Kernel
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH 2/6] add res_counter_uncharge_until()
Date: Fri, 11 May 2012 14:19:45 -0700 [thread overview]
Message-ID: <20120511141945.c487e94c.akpm@linux-foundation.org> (raw)
In-Reply-To: <4FACE01A.4040405-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
On Fri, 11 May 2012 18:47:06 +0900
KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org> wrote:
> From: Frederic Weisbecker <fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
>
> At killing res_counter which is a child of other counter,
> we need to do
> res_counter_uncharge(child, xxx)
> res_counter_charge(parent, xxx)
>
> This is not atomic and wasting cpu. This patch adds
> res_counter_uncharge_until(). This function's uncharge propagates
> to ancestors until specified res_counter.
>
> res_counter_uncharge_until(child, parent, xxx)
>
> Now, ops is atomic and efficient.
>
> Changelog since v2
> - removed unnecessary lines.
> - Fixed 'From' , this patch comes from his series. Please signed-off-by if good.
>
> Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
Frederic's Signed-off-by: is unavaliable?
next prev parent reply other threads:[~2012-05-11 21:19 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-11 9:41 [PATCH v3][0/6] memcg: prevent -ENOMEM in pre_destroy() KAMEZAWA Hiroyuki
2012-05-11 9:45 ` [PATCH v3 1/6] memcg: fix error code in hugetlb_force_memcg_empty() KAMEZAWA Hiroyuki
[not found] ` <4FACDFAE.5050808-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-05-11 21:17 ` Andrew Morton
[not found] ` <20120511141754.e0719c26.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2012-05-14 1:07 ` KAMEZAWA Hiroyuki
2012-05-14 18:15 ` Tejun Heo
[not found] ` <20120514181556.GE2366-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-05-14 18:32 ` Tejun Heo
[not found] ` <20120514183219.GG2366-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-05-15 1:10 ` KAMEZAWA Hiroyuki
2012-05-15 15:12 ` Tejun Heo
2012-05-11 9:47 ` [PATCH 2/6] add res_counter_uncharge_until() KAMEZAWA Hiroyuki
[not found] ` <4FACE01A.4040405-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-05-11 21:19 ` Andrew Morton [this message]
[not found] ` <20120511141945.c487e94c.akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
2012-05-14 1:10 ` KAMEZAWA Hiroyuki
2012-05-14 10:08 ` Frederic Weisbecker
[not found] ` <CAFTL4hwGEhyxZO0sXx5gVyK_xjhMQEbHojJbHzQmVKafNyVWtw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2012-05-14 10:32 ` KAMEZAWA Hiroyuki
[not found] ` <4FB0DF4A.5010506-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-05-14 10:56 ` Frederic Weisbecker
2012-05-14 18:17 ` Tejun Heo
2012-05-11 9:48 ` [PATCH v3 3/6] memcg: use res_counter_uncharge_until in move_parent() KAMEZAWA Hiroyuki
[not found] ` <4FACDED0.3020400-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-05-11 9:49 ` [PATCH v3 4/6] memcg: move charges to root cgroup if use_hierarchy=0 KAMEZAWA Hiroyuki
[not found] ` <4FACE0A2.30608-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-05-14 20:14 ` Tejun Heo
[not found] ` <20120514201438.GI2366-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-05-15 0:04 ` KAMEZAWA Hiroyuki
2012-05-11 9:50 ` [PATCH v3 5/6] memcg: don't uncharge in mem_cgroup_move_account KAMEZAWA Hiroyuki
2012-05-11 9:53 ` [PATCH v3 6/6] remove __must_check for res_counter_charge_nofail() KAMEZAWA Hiroyuki
[not found] ` <4FACE184.6020307-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-05-14 20:09 ` Tejun Heo
[not found] ` <20120514200925.GH2366-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-05-15 0:02 ` KAMEZAWA Hiroyuki
2012-06-21 20:20 ` [PATCH v3][0/6] memcg: prevent -ENOMEM in pre_destroy() Tejun Heo
[not found] ` <20120621202043.GD4642-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-06-21 23:27 ` Kamezawa Hiroyuki
[not found] ` <4FE3ADDD.9060908-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-06-27 17:58 ` Tejun Heo
[not found] ` <20120627175818.GM15811-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2012-06-28 8:33 ` Kamezawa Hiroyuki
[not found] ` <4FEC16EF.40408-+CUm20s59erQFUHtdCDX3A@public.gmane.org>
2012-06-28 16:06 ` Tejun Heo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120511141945.c487e94c.akpm@linux-foundation.org \
--to=akpm-de/tnxtf+jlsfhdxvbkv3wd2fqjk+8+b@public.gmane.org \
--cc=aneesh.kumar-23VcF4HTsmIX0ybBhKVfKdBPR1lH4CV8@public.gmane.org \
--cc=cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=glommer-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org \
--cc=hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org \
--cc=kamezawa.hiroyu-+CUm20s59erQFUHtdCDX3A@public.gmane.org \
--cc=kamezawa.hiroyuki-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org \
--cc=mhocko-AlSwsSmVLrQ@public.gmane.org \
--cc=tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=yinghan-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).