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From: David Rientjes <rientjes@google.com>
To: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Michal Hocko <mhocko@kernel.org>,
	"Li,Rongqing" <lirongqing@baidu.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-mm@kvack.org" <linux-mm@kvack.org>,
	"cgroups@vger.kernel.org" <cgroups@vger.kernel.org>,
	"hannes@cmpxchg.org" <hannes@cmpxchg.org>
Subject: Re: 答复: 答复: [PATCH] mm/memcontrol.c: speed up to force empty a memory cgroup
Date: Tue, 20 Mar 2018 15:45:27 -0700 (PDT)	[thread overview]
Message-ID: <alpine.DEB.2.20.1803201540290.45142@chino.kir.corp.google.com> (raw)
In-Reply-To: <e265c518-968b-8669-ad22-671c781ad96e@virtuozzo.com>

On Wed, 21 Mar 2018, Andrey Ryabinin wrote:

> > Is SWAP_CLUSTER_MAX the best answer if I'm lowering the limit by 1GB?
> > 
> 
> Absolutely not. I completely on your side here. 
> I've tried to fix this recently - http://lkml.kernel.org/r/20180119132544.19569-2-aryabinin@virtuozzo.com
> I guess that Andrew decided to not take my patch, because Michal wasn't
> happy about it (see mail archives if you want more details).
> 

I unfortunately didn't see this patch in January, it seems very similar to 
what I was suggesting in this thread.  You do a page_counter_read() 
directly in mem_cgroup_resize_limit() where my suggestion was to have 
page_counter_limit() return the difference, but there's nothing 
significantly different about what you proposed and what I suggested.

Perhaps the patch would be better off as a compromise between what you, I, 
and Li RongQing have proposed/suggested: have page_counter_limit() return 
the difference, and clamp it to some value proportional to the new limit.

  reply	other threads:[~2018-03-20 22:45 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-19  8:29 Li RongQing
2018-03-19  8:53 ` Michal Hocko
     [not found]   ` <2AD939572F25A448A3AE3CAEA61328C23745764B@BC-MAIL-M28.internal.baidu.com>
2018-03-19 10:37     ` 答复: " Michal Hocko
2018-03-19 10:51       ` 答复: " Li,Rongqing
2018-03-19 17:51         ` David Rientjes
2018-03-20  8:39           ` Michal Hocko
2018-03-20 20:29             ` David Rientjes
2018-03-20 22:08               ` Andrey Ryabinin
2018-03-20 22:15                 ` David Rientjes
2018-03-20 22:35                   ` Andrey Ryabinin
2018-03-20 22:45                     ` David Rientjes [this message]
2018-03-21  9:59                     ` Michal Hocko
2018-03-23  2:58         ` Li,Rongqing
2018-03-23 10:08           ` Michal Hocko
2018-03-23 12:04             ` 答复: " Li,Rongqing
2018-03-23 12:29               ` Michal Hocko
2018-03-23 10:34 ` Michal Hocko

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