linux-kernel - Re: [PATCH 1/4] mmzone: make holding lock_memory_hotplug() a requirement for updating pgdat size

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Message-ID: <51819AED.9090408@linux.vnet.ibm.com>
Date:	Wed, 01 May 2013 15:45:01 -0700
From:	Cody P Schafer <cody@...ux.vnet.ibm.com>
To:	David Rientjes <rientjes@...gle.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux MM <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] mmzone: make holding lock_memory_hotplug() a requirement
 for updating pgdat size

On 05/01/2013 03:39 PM, David Rientjes wrote:
> On Wed, 1 May 2013, Cody P Schafer wrote:
>
>> They are also initialized at boot without pgdat_resize_lock(), if we consider
>> boot time, quite a few of the statements on when locking is required are
>> wrong.
>>
>> That said, you are correct that it is not strictly required to hold
>> lock_memory_hotplug() when updating the fields in question because
>> pgdat_resize_lock() is used.
>>
>
> I think you've confused node size fields with zone size fields.
>

Where? I'm afraid I don't see where I'm mixing them.


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