From: Vladimir Davydov <vdavydov@parallels.com>
To: Tejun Heo <tj@kernel.org>
Cc: hannes@cmpxchg.org, mhocko@kernel.org, akpm@linux-foundation.org,
cgroups@vger.kernel.org, linux-mm@kvack.org, kernel-team@fb.com
Subject: Re: [PATCH 1/2] memcg: flatten task_struct->memcg_oom
Date: Wed, 2 Sep 2015 14:45:18 +0300 [thread overview]
Message-ID: <20150902114518.GA1237@esperanza> (raw)
In-Reply-To: <20150828220158.GD11089@htj.dyndns.org>
On Fri, Aug 28, 2015 at 06:01:58PM -0400, Tejun Heo wrote:
> task_struct->memcg_oom is a sub-struct containing fields which are
> used for async memcg oom handling. Most task_struct fields aren't
> packaged this way and it can lead to unnecessary alignment paddings.
> This patch flattens it.
>
> * task.memcg_oom.memcg -> task.memcg_in_oom
> * task.memcg_oom.gfp_mask -> task.memcg_oom_gfp_mask
> * task.memcg_oom.order -> task.memcg_oom_order
> * task.memcg_oom.may_oom -> task.memcg_may_oom
>
> In addition, task.memcg_may_oom is relocated to where other bitfields
> are which reduces the size of task_struct.
>
> Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Vladimir Davydov <vdavydov@parallels.com>
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next prev parent reply other threads:[~2015-09-02 11:45 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-28 22:01 [PATCH 1/2] memcg: flatten task_struct->memcg_oom Tejun Heo
2015-08-28 22:02 ` [PATCH 2/2] memcg: always enable kmemcg on the default hierarchy Tejun Heo
2015-08-31 22:54 ` Andrew Morton
2015-09-04 21:00 ` [PATCH v2 3/2] memcg: punt high overage reclaim to return-to-userland path Tejun Heo
2015-09-07 9:23 ` Michal Hocko
2015-09-08 16:59 ` Tejun Heo
2015-09-07 11:38 ` Vladimir Davydov
2015-09-08 17:00 ` Tejun Heo
2015-09-15 9:20 ` [PATCH 2/2] memcg: always enable kmemcg on the default hierarchy Johannes Weiner
2015-09-01 15:25 ` [PATCH 1/2] memcg: flatten task_struct->memcg_oom Michal Hocko
2015-09-02 11:45 ` Vladimir Davydov [this message]
2015-09-13 18:59 Tejun Heo
2015-09-15 7:37 ` Johannes Weiner
2015-09-20 14:45 ` Sasha Levin
2015-09-21 20:01 ` Tejun Heo
2015-09-30 18:54 ` Tejun Heo
2015-11-25 14:43 ` Peter Zijlstra
2015-11-25 15:02 ` Peter Zijlstra
2015-11-25 15:31 ` Andrey Ryabinin
2015-11-25 17:34 ` Dmitry Vyukov
2015-11-25 17:44 ` Peter Zijlstra
2015-12-11 16:25 ` Tejun Heo
2015-12-15 19:22 ` Peter Zijlstra
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