makedumpfile -g with recent kernels

HATAYAMA Daisuke d.hatayama at
Thu Aug 2 01:47:14 EDT 2012

From: Atsushi Kumagai <kumagai-atsushi at>
Subject: Re: makedumpfile -g with recent kernels
Date: Thu, 2 Aug 2012 14:12:51 +0900

> Hello Stefan,
> On Mon, 09 Jul 2012 11:17:13 +0200
> Stefan Bader <stefan.bader at> wrote:
>> Hi,
>> I am not sure whether this really is the preferred way as I heard the required
>> info now is in vmcore and vmcoreinfo would not be needed anymore. But just to
>> have it produce some output I noticed that it trips again over some member of
>> struct page that moved into some anonymous structure/union combo.
>> There was some code that was quite specific for the page.mapping case (which now
>> seems to be outside again). I changed the code to be more generic. It did fix my
>> _count problem and should also handle the mapping case (though I could not test).
>> So maybe this would be worth adding to the upstream code.
>> -Stefan
>> Please include me in cc's as I am not subscribed to this ml.
> Thank you for your nice work!

Hello Kumagai-san,

I want to see a whole part of Stefan's patch. Could you post it on the


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