linux-kernel - Re: PROBLEM: Crash cgdeleting empty memory cgroups with memory.kmem.limit_in

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Message-ID: <5125DC11.7060106@parallels.com>
Date:	Thu, 21 Feb 2013 12:34:25 +0400
From:	Glauber Costa <glommer@...allels.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Steffen Michalke <StMichalke@....de>,
	<linux-kernel@...r.kernel.org>, "Li Zefan" <lizefan@...wei.com>,
	<containers@...ts.linux-foundation.org>,
	"Johannes Weiner" <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.cz>,
	Balbir Singh <bsingharora@...il.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: PROBLEM: Crash cgdeleting empty memory cgroups with memory.kmem.limit_in_bytes
 set

On 02/21/2013 03:00 AM, Tejun Heo wrote:
> (cc'ing cgroup / memcg people and quoting whole body)
> 
> Looks like something is going wrong with memcg cache destruction.
> Glauber, any ideas?  Also, can we please not use names as generic as
> kmem_cache_destroy_work_func for something specific to memcg?  How
> about something like memcg_destroy_cache_workfn?
> 

I will take a look. Thanks for the report for the reportee: I tested
cgroup deletion quite extensively (quite important feature for me) so it
is nice to have an uncaught case.

About naming, I can change, no problem.
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