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Re: [PATCH 3/3] mm, meminit: Ensure node is online before checking whether pages are uninitialised

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  Re: [PATCH 3/3] mm, meminit: Ensure node is online before checking  whether pages are uninitialised David Rientjes <rientjes@google.com> - 2016-07-13 01:30 +0200

#1441912 — Re: [PATCH 3/3] mm, meminit: Ensure node is online before checking whether pages are uninitialised

On Fri, 8 Jul 2016, Mel Gorman wrote:

> early_page_uninitialised looks up an arbitrary PFN. While a machine without
> node 0 will boot with "mm, page_alloc: Always return a valid node from
> early_pfn_to_nid", it works because it assumes that nodes are always in
> PFN order. This is not guaranteed so this patch adds robustness by always
> checking if the node being checked is online.
> 
> Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
> Cc: <stable@vger.kernel.org> # 4.2+

Acked-by: David Rientjes <rientjes@google.com>

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