linux-kernel - Re: [PATCH v2 3/3] mm/memory_hotplug: Refactor unregister_mem_sect_under

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Message-ID: <20180814095500.GA6979@techadventures.net>
Date:   Tue, 14 Aug 2018 11:55:00 +0200
From:   Oscar Salvador <osalvador@...hadventures.net>
To:     David Hildenbrand <david@...hat.com>
Cc:     akpm@...ux-foundation.org, mhocko@...e.com,
        dan.j.williams@...el.com, jglisse@...hat.com, rafael@...nel.org,
        yasu.isimatu@...il.com, logang@...tatee.com, dave.jiang@...el.com,
        Jonathan.Cameron@...wei.com, vbabka@...e.cz, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Oscar Salvador <osalvador@...e.de>
Subject: Re: [PATCH v2 3/3] mm/memory_hotplug: Refactor
 unregister_mem_sect_under_nodes

On Tue, Aug 14, 2018 at 11:39:34AM +0200, David Hildenbrand wrote:
> On 13.08.2018 17:46, osalvador@...hadventures.net wrote:
> > From: Oscar Salvador <osalvador@...e.de>
> > While at it, we can also drop the node_online() check, as a node can only be
> > offline if all the memory/cpus associated with it have been removed.
> 
> I would prefer splitting this change out into a separate patch.

Yes, I guess it is better as it is not really related to the changes in this patch.
I will wait for more feedback and I will split it up in v3.

> > +
> > +	if (unlinked_nodes)
> > +		NODEMASK_FREE(unlinked_nodes);
> 
> NODEMASK_FEEE/kfree can deal with NULL pointers.

Good point, I missed that.
I will fix it up in v3.

Thanks for reviewing.
-- 
Oscar Salvador
SUSE L3