From: Toshi Kani <toshi.kani@hp.com>
Date: Tue, 12 Nov 2013 23:08:13 +0000 (-0800)
Subject: mm: clear N_CPU from node_states at CPU offline
X-Git-Tag: v3.13-rc1~106^2~198
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=807a1bd2b2a38845fd422b93328e7d69f13eb13a;p=pandora-kernel.git

mm: clear N_CPU from node_states at CPU offline

vmstat_cpuup_callback() is a CPU notifier callback, which marks N_CPU to a
node at CPU online event.  However, it does not update this N_CPU info at
CPU offline event.

Changed vmstat_cpuup_callback() to clear N_CPU when the last CPU in the
node is put into offline, i.e.  the node no longer has any online CPU.

Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Acked-by: Christoph Lameter <cl@linux.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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