[PATCH 3/3] padata: Fix cpu hotplug

From: Steffen Klassert
Date: Wed Mar 28 2012 - 02:44:22 EST

We don't remove the cpu that went offline from our cpumasks
on cpu hotplug. This got lost somewhere along the line, so
restore it. This fixes a hang of the padata instance on cpu

Signed-off-by: Steffen Klassert <steffen.klassert@xxxxxxxxxxx>
kernel/padata.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/kernel/padata.c b/kernel/padata.c
index de3d0d9..89fe3d1 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -748,6 +748,9 @@ static int __padata_remove_cpu(struct padata_instance *pinst, int cpu)
return -ENOMEM;

padata_replace(pinst, pd);
+ cpumask_clear_cpu(cpu, pd->cpumask.cbcpu);
+ cpumask_clear_cpu(cpu, pd->cpumask.pcpu);

return 0;

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