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Date: Wed, 13 Jan 2010 10:08:59 +0800
Message-ID: <2375c9f91001121808y7c4cbe3es802f5ddd433b7bc3@mail.gmail.com>
Subject: Re: 2.6.33 pagemap endless read loop
From: =?UTF-8?Q?Am=C3=A9rico_Wang?= <xiyou.wangcong@gmail.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: linux-kernel@vger.kernel.org
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On Wed, Jan 13, 2010 at 12:28 AM, Andi Kleen <andi@firstfloor.org> wrote:
>> Hmm, could you please try:
>>
>>      time cat /proc/self/pagemap >/dev/null
>>
>
> I stopped it after a minute of CPU time...
>
> Obviously reading 47bits of zeroes take a long time.
>

Yeah, but this just proves it is not endless, doesn't it? :)

Thanks.
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