From: Jeff Liu <jeff.liu@oracle.com>
To: linux-mm@kvack.org
Cc: Michal Hocko <mhocko@suse.cz>,
Glauber Costa <glommer@parallels.com>,
cgroups@vger.kernel.org
Subject: [PATCH v2 0/6] memcg: disable swap cgroup allocation at swapon
Date: Mon, 28 Jan 2013 18:54:27 +0800 [thread overview]
Message-ID: <510658E3.1020306@oracle.com> (raw)
Hello,
Here is the v2 patch set for disabling swap_cgroup structures allocation
per swapon.
In the initial version, one big issue is that I have missed the swap tracking
for the root memcg, thanks Michal pointing it out. :)
In order to solve it, the easiest approach I can think out is to bypass the root
memcg swap accounting during the business and figure it out with some global stats,
which means that we always return 0 per root memcg swap charge/uncharge stage, and
this is inspired by another proposal from Zhengju:
"memcg: Don't account root memcg page statistics -- https://lkml.org/lkml/2013/1/2/71"
Besides that, another major fix is deallocate swap accounting structures on the last
non-root memcg remove after all references to it are gone rather than doing it on
mem_cgroup_destroy().
Any comment are welcome!
v1->v2:
- Refactor swap_cgroup_swapon()/swap_cgroup_prepare(), to make the later can be
used for allocating buffers per the first non-root memcg creation.
- Bypass root memcg swap statistics, using the global stats to figure it out instead.
- Export nr_swap_files which would be used when creating/freeing swap_cgroup
- Deallocate swap accounting structures on the last non-root memcg removal
Old patch set:
v1:
http://marc.info/?l=linux-mm&m=135461016823964&w=2
Thanks,
-Jeff
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next reply other threads:[~2013-01-28 10:54 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-28 10:54 Jeff Liu [this message]
2013-01-28 10:54 ` [PATCH v2 1/6] memcg: refactor swap_cgroup_swapon() Jeff Liu
2013-01-29 9:15 ` Lord Glauber Costa of Sealand
2013-01-29 13:41 ` Michal Hocko
2013-01-28 10:54 ` [PATCH v2 2/6] memcg: bypass swap accounting for the root memcg Jeff Liu
2013-01-29 10:18 ` Lord Glauber Costa of Sealand
2013-01-31 6:18 ` Jeff Liu
2013-01-29 14:13 ` Michal Hocko
2013-01-30 16:01 ` Jeff Liu
2013-01-30 16:29 ` Michal Hocko
2013-01-31 4:00 ` Jeff Liu
2013-01-28 10:54 ` [PATCH v2 3/6] memcg: introduce memsw_accounting_users Jeff Liu
2013-01-29 9:46 ` Lord Glauber Costa of Sealand
2013-01-29 10:52 ` Jeff Liu
2013-01-29 14:26 ` Michal Hocko
2013-01-29 14:24 ` Michal Hocko
2013-01-29 15:16 ` Jeff Liu
2013-01-28 10:54 ` [PATCH v2 4/6] memcg: export nr_swap_files Jeff Liu
2013-01-29 9:47 ` Lord Glauber Costa of Sealand
2013-01-29 14:31 ` Michal Hocko
2013-01-29 15:17 ` Jeff Liu
2013-01-28 10:54 ` [PATCH v2 5/6] memcg: introduce swap_cgroup_init()/swap_cgroup_free() Jeff Liu
2013-01-29 9:57 ` Lord Glauber Costa of Sealand
2013-01-29 10:21 ` Jeff Liu
2013-01-29 14:56 ` Michal Hocko
2013-01-29 15:51 ` Jeff Liu
2013-01-29 16:09 ` Michal Hocko
2013-01-28 10:54 ` [PATCH v2 6/6] memcg: init/free swap cgroup strucutres upon create/free child memcg Jeff Liu
2013-01-29 9:59 ` Lord Glauber Costa of Sealand
2013-01-29 10:27 ` Jeff Liu
2013-01-29 15:11 ` Michal Hocko
2013-01-29 15:15 ` [PATCH v2 0/6] memcg: disable swap cgroup allocation at swapon Michal Hocko
2013-01-29 16:50 ` Jeff Liu
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=510658E3.1020306@oracle.com \
--to=jeff.liu@oracle.com \
--cc=cgroups@vger.kernel.org \
--cc=glommer@parallels.com \
--cc=linux-mm@kvack.org \
--cc=mhocko@suse.cz \
/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).