From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg Thelen <gthelen@google.com>
Subject: Re: [PATCH v4 02/11] memcg: document cgroup dirty memory interfaces
Date: Fri, 29 Oct 2010 14:37:30 -0700
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	<1288336154-23256-3-git-send-email-gthelen@google.com>
	<20101029131952.1191023d.akpm@linux-foundation.org>
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	Morton's message of "Fri, 29 Oct 2010 13:19:52 -0700")
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To: Andrew Morton <akpm@linux-foundation.org>
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Andrew Morton <akpm@linux-foundation.org> writes:

> On Fri, 29 Oct 2010 00:09:05 -0700
> Greg Thelen <gthelen@google.com> wrote:
>
>> Document cgroup dirty memory interfaces and statistics.
>> 
>>
>> ...
>>
>> +When use_hierarchy=0, each cgroup has dirty memory usage and limits.
>> +System-wide dirty limits are also consulted.  Dirty memory consumption is
>> +checked against both system-wide and per-cgroup dirty limits.
>> +
>> +The current implementation does enforce per-cgroup dirty limits when
>
> "does not", I trust.

Correct.  Thanks.

>> +use_hierarchy=1.  System-wide dirty limits are used for processes in such
>> +cgroups.  Attempts to read memory.dirty_* files return the system-wide values.
>> +Writes to the memory.dirty_* files return error.  An enhanced implementation is
>> +needed to check the chain of parents to ensure that no dirty limit is exceeded.
>> +
>>  6. Hierarchy support
>>  
>>  The memory controller supports a deep hierarchy and hierarchical accounting.
>> -- 
>> 1.7.3.1
>
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From: Greg Thelen <gthelen@google.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
        containers@lists.osdl.org, Andrea Righi <arighi@develer.com>,
        Balbir Singh <balbir@linux.vnet.ibm.com>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
        Minchan Kim <minchan.kim@gmail.com>,
        Ciju Rajan K <ciju@linux.vnet.ibm.com>,
        David Rientjes <rientjes@google.com>,
        Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH v4 02/11] memcg: document cgroup dirty memory interfaces
References: <1288336154-23256-1-git-send-email-gthelen@google.com>
	<1288336154-23256-3-git-send-email-gthelen@google.com>
	<20101029131952.1191023d.akpm@linux-foundation.org>
Date: Fri, 29 Oct 2010 14:37:30 -0700
In-Reply-To: <20101029131952.1191023d.akpm@linux-foundation.org> (Andrew
	Morton's message of "Fri, 29 Oct 2010 13:19:52 -0700")
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Andrew Morton <akpm@linux-foundation.org> writes:

> On Fri, 29 Oct 2010 00:09:05 -0700
> Greg Thelen <gthelen@google.com> wrote:
>
>> Document cgroup dirty memory interfaces and statistics.
>> 
>>
>> ...
>>
>> +When use_hierarchy=0, each cgroup has dirty memory usage and limits.
>> +System-wide dirty limits are also consulted.  Dirty memory consumption is
>> +checked against both system-wide and per-cgroup dirty limits.
>> +
>> +The current implementation does enforce per-cgroup dirty limits when
>
> "does not", I trust.

Correct.  Thanks.

>> +use_hierarchy=1.  System-wide dirty limits are used for processes in such
>> +cgroups.  Attempts to read memory.dirty_* files return the system-wide values.
>> +Writes to the memory.dirty_* files return error.  An enhanced implementation is
>> +needed to check the chain of parents to ensure that no dirty limit is exceeded.
>> +
>>  6. Hierarchy support
>>  
>>  The memory controller supports a deep hierarchy and hierarchical accounting.
>> -- 
>> 1.7.3.1
>
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
> the body to majordomo@kvack.org.  For more info on Linux MM,
> see: http://www.linux-mm.org/ .
> Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>