linux-kernel - Re: [-mm PATCH] Memory controller improve user interface (v3)

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Message-ID: <46DD0939.7030409@linux.vnet.ibm.com>
Date:	Tue, 04 Sep 2007 08:28:57 +0100
From:	Balbir Singh <balbir@...ux.vnet.ibm.com>
To:	Paul Menage <menage@...gle.com>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux MM Mailing List <linux-mm@...ck.org>,
	David Rientjes <rientjes@...gle.com>,
	Linux Containers <containers@...ts.osdl.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [-mm PATCH] Memory controller improve user interface (v3)

Paul Menage wrote:
> On 9/3/07, Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
>> Paul Menage wrote:
>>> On 9/2/07, Balbir Singh <balbir@...ux.vnet.ibm.com> wrote:
>>>> -       s += sprintf(s, "%lu\n", *val);
>>>> +       if (read_strategy)
>>>> +               s += read_strategy(*val, s);
>>>> +       else
>>>> +               s += sprintf(s, "%lu\n", *val);
>>> This would be better as %llu
>>>
>> Hi, Paul,
>>
>> This does not need fixing, since the other counters like failcnt are
>> still unsigned long
>>
> 
> But val is an unsigned long long*. So printing *val with %lu will
> break (at least a warning, and maybe corruption if you had other
> parameters) on 32-bit archs.
> 

Yeah... Hmm.. just wonder if all the counters should be unsigned long
long? failcnt is the only remaining unsigned long counter now.

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