From: Tejun Heo <tj@kernel.org>
To: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>,
bsingharora@gmail.com, cgroups@vger.kernel.org,
linux-mm@kvack.org, lizefan@huawei.com
Subject: Re: [PATCH 3/3] memcg: simplify mem_cgroup_reclaim_iter
Date: Tue, 11 Jun 2013 01:00:49 -0700 [thread overview]
Message-ID: <20130611080049.GF22530@mtj.dyndns.org> (raw)
In-Reply-To: <20130611075540.GD24031@dhcp22.suse.cz>
Hello,
On Tue, Jun 11, 2013 at 09:55:40AM +0200, Michal Hocko wrote:
> > Anyways, I think we're getting too deep into details but one more
> > thing, what do you mean by "non-NULL new cache"?
>
> If you replace cached memcg by a new (non-NULL) one then all the parents
> up the hierarchy can reuse the same replacement and do not have to
> search again.
As finding the next one to visit is pretty cheap, it isn't likely to
be a big difference but yeah we can definitely re-use the first
non-NULL next for all further ancestors.
Thanks.
--
tejun
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next prev parent reply other threads:[~2013-06-11 8:00 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-04 0:44 [PATCHSET] memcg: fix and reimplement iterator Tejun Heo
2013-06-04 0:44 ` Tejun Heo
[not found] ` <1370306679-13129-1-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2013-06-04 0:44 ` [PATCH 1/3] memcg: fix subtle memory barrier bug in mem_cgroup_iter() Tejun Heo
2013-06-04 0:44 ` Tejun Heo
2013-06-04 13:03 ` Michal Hocko
[not found] ` <20130604130336.GE31242-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2013-06-04 13:58 ` Johannes Weiner
2013-06-04 13:58 ` Johannes Weiner
2013-06-04 15:29 ` Michal Hocko
2013-06-04 0:44 ` [PATCH 2/3] memcg: restructure mem_cgroup_iter() Tejun Heo
2013-06-04 0:44 ` Tejun Heo
[not found] ` <1370306679-13129-3-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2013-06-04 13:21 ` Michal Hocko
2013-06-04 13:21 ` Michal Hocko
2013-06-04 20:51 ` Tejun Heo
2013-06-04 0:44 ` [PATCH 3/3] memcg: simplify mem_cgroup_reclaim_iter Tejun Heo
2013-06-04 0:44 ` Tejun Heo
[not found] ` <1370306679-13129-4-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2013-06-04 13:18 ` Michal Hocko
2013-06-04 13:18 ` Michal Hocko
[not found] ` <20130604131843.GF31242-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2013-06-04 20:50 ` Tejun Heo
2013-06-04 20:50 ` Tejun Heo
2013-06-04 21:28 ` Michal Hocko
2013-06-04 21:55 ` Tejun Heo
2013-06-05 7:30 ` Michal Hocko
2013-06-05 8:20 ` Tejun Heo
2013-06-05 8:36 ` Michal Hocko
2013-06-05 8:44 ` Tejun Heo
2013-06-05 8:55 ` Michal Hocko
2013-06-05 9:03 ` Tejun Heo
[not found] ` <20130605082023.GG7303-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2013-06-05 14:39 ` Johannes Weiner
2013-06-05 14:39 ` Johannes Weiner
2013-06-05 14:56 ` Michal Hocko
[not found] ` <20130605143949.GQ15576-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-06-05 14:50 ` Johannes Weiner
2013-06-05 14:50 ` Johannes Weiner
2013-06-05 17:22 ` Tejun Heo
2013-06-05 17:22 ` Tejun Heo
[not found] ` <20130605172212.GA10693-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2013-06-05 19:45 ` Johannes Weiner
2013-06-05 19:45 ` Johannes Weiner
[not found] ` <20130605194552.GI15721-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-06-05 20:06 ` Tejun Heo
2013-06-05 20:06 ` Tejun Heo
2013-06-05 21:17 ` Johannes Weiner
2013-06-05 22:20 ` Tejun Heo
[not found] ` <20130605222021.GL10693-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2013-06-05 22:27 ` Tejun Heo
2013-06-05 22:27 ` Tejun Heo
2013-06-06 11:50 ` Michal Hocko
2013-06-07 0:52 ` Tejun Heo
[not found] ` <20130607005242.GB16160-Gd/HAXX7CRxy/B6EtB590w@public.gmane.org>
2013-06-07 7:37 ` Michal Hocko
2013-06-07 7:37 ` Michal Hocko
2013-06-07 23:25 ` Tejun Heo
[not found] ` <20130607232557.GL14781-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2013-06-10 8:02 ` Michal Hocko
2013-06-10 8:02 ` Michal Hocko
2013-06-10 19:54 ` Tejun Heo
2013-06-10 20:48 ` Michal Hocko
[not found] ` <20130610204801.GA21003-2MMpYkNvuYDjFM9bn6wA6Q@public.gmane.org>
2013-06-10 23:13 ` Tejun Heo
2013-06-10 23:13 ` Tejun Heo
2013-06-11 7:27 ` Michal Hocko
2013-06-11 7:44 ` Tejun Heo
[not found] ` <20130611074404.GE22530-9pTldWuhBndy/B6EtB590w@public.gmane.org>
2013-06-11 7:55 ` Michal Hocko
2013-06-11 7:55 ` Michal Hocko
2013-06-11 8:00 ` Tejun Heo [this message]
2013-06-04 21:40 ` Johannes Weiner
[not found] ` <20130604214050.GP15576-druUgvl0LCNAfugRpC6u6w@public.gmane.org>
2013-06-04 21:49 ` Tejun Heo
2013-06-04 21:49 ` Tejun Heo
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