linux-kernel - Re: [-mm][PATCH 2/4] Setup the memrlimit controller (v5)

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Message-ID: <48500C66.7040807@linux.vnet.ibm.com>
Date:	Wed, 11 Jun 2008 23:03:26 +0530
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	righi.andrea@...il.com
CC:	linux-mm@...ck.org, Sudhir Kumar <skumar@...ux.vnet.ibm.com>,
	YAMAMOTO Takashi <yamamoto@...inux.co.jp>,
	Paul Menage <menage@...gle.com>, lizf@...fujitsu.com,
	linux-kernel@...r.kernel.org, Pavel Emelianov <xemul@...nvz.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Subject: Re: [-mm][PATCH 2/4] Setup the memrlimit controller (v5)

Andrea Righi wrote:
> Balbir Singh wrote:
>> +static int memrlimit_cgroup_write_strategy(char *buf, unsigned long
>> long *tmp)
>> +{
>> +    *tmp = memparse(buf, &buf);
>> +    if (*buf != '\0')
>> +        return -EINVAL;
>> +
>> +    *tmp = PAGE_ALIGN(*tmp);
>> +    return 0;
>> +}
> 
> We shouldn't use PAGE_ALIGN() here, otherwise we limit the address space
> to 4GB on 32-bit architectures (that could be reasonable, because this
> is a per-cgroup limit and not per-process).
> 

You mean un-reasonable?

> Signed-off-by: Andrea Righi <righi.andrea@...il.com>

Seems fair enough.

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



-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL
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