powerpc/mm/nohash: Ignore NULL stale_map entries
authorScott Wood <scottwood@freescale.com>
Thu, 21 Mar 2013 00:06:12 +0000 (19:06 -0500)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 20 Jun 2013 06:55:10 +0000 (16:55 +1000)
This happens with threads that are offline due to CPU hotplug
(including threads that were never "plugged in" to begin with because
SMT is disabled).

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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