linux-kernel - Re: [PATCH V3] nommu: add anonymous page memcg accounting

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Message-ID: <20101022035302.GA15844@balbir.in.ibm.com>
Date:	Fri, 22 Oct 2010 09:23:03 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	"Steven J. Magnani" <steve@...idescorp.com>
Cc:	linux-mm@...ck.org, dhowells@...hat.com,
	linux-kernel@...r.kernel.org, kamezawa.hiroyu@...fujitsu.com
Subject: Re: [PATCH V3] nommu: add anonymous page memcg accounting

* Steven J. Magnani <steve@...idescorp.com> [2010-10-21 07:28:08]:

> Add the necessary calls to track VM anonymous page usage (only).
> 
> V3 changes:
> * Use vma->vm_mm instead of current->mm when charging pages, for clarity
> * Document that reclaim is not possible with only anonymous page accounting
>   so the OOM-killer is invoked when a limit is exceeded
> * Add TODO to implement file cache (reclaim) support or optimize away
>   page_cgroup->lru
> 
> V2 changes:
> * Added update of memory cgroup documentation
> * Clarify use of 'file' to distinguish anonymous mappings
> 
> Signed-off-by: Steven J. Magnani <steve@...idescorp.com>

Acked-by: Balbir Singh <balbir@...ux.vnet.ibm.com>

BTW, I have no way of testing this, we need to rely on the NOMMU
community to test this.
 

-- 
	Three Cheers,
	Balbir
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