linux-kernel - Re: [PATCH RFC] hotplug-memory: refactor online_pages to separate zone growth from page onlining

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Date:	Fri, 28 Mar 2008 22:48:21 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
CC:	Yasunori Goto <y-goto@...fujitsu.com>,
	Christoph Lameter <clameter@....com>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC] hotplug-memory: refactor online_pages to separate
 zone growth from page onlining

KAMEZAWA Hiroyuki wrote:
> Hi,
>
> On Fri, 28 Mar 2008 17:00:05 -0700
> Jeremy Fitzhardinge <jeremy@...p.org> wrote:
>
>   
>> -	if (onlined_pages)
>> +	if (onlined_pages) {
>> +		struct memory_notify arg;
>> +
>> +		arg.start_pfn = pfn;  /* ? */
>> +		arg.nr_pages = onlined_pages;
>> +		arg.status_change_nid = -1;  /* ? */
>> +
>>  		memory_notify(MEM_ONLINE, &arg);
>> +	}
>>     
> I think you should add "onlined" member instead of reusing nr_pages.
>   

I suppose.  What would I put into nr_pages?  And anyway, there are no 
users for this notification...

> But, in general, I have no objection to this way.
>   

The refactoring in general?

    J
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