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padata: Use get_online_cpus/put_online_cpus in padata_free

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Add get_online_cpus/put_online_cpus to ensure that no cpu goes
offline during the flushing of the padata percpu queues.

Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Steffen Klassert 2010-05-19 13:45:35 +10:00 committed by Herbert Xu
parent 0198ffd135
commit 3789ae7dcd
1 changed files with 3 additions and 0 deletions
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3
kernel/padata.c
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@ -763,7 +763,10 @@ void padata_free(struct padata_instance *pinst)
#ifdef CONFIG_HOTPLUG_CPU
unregister_hotcpu_notifier(&pinst->cpu_notifier);
#endif
get_online_cpus();
padata_flush_queues(pinst->pd);
put_online_cpus();
padata_free_pd(pinst->pd);
free_cpumask_var(pinst->cpumask);
kfree(pinst);