On Tue, 4 Jul 2017, Vlastimil Babka wrote:
> >
> > -void lru_add_drain_all(void)
> > +void lru_add_drain_all_cpuslocked(void)
> > {
> > static DEFINE_MUTEX(lock);
> > static struct cpumask has_work;
> > @@ -701,7 +701,6 @@ void lru_add_drain_all(void)
> > return;
> >
> > mutex_lock(&lock);
> > - get_online_cpus();
>
> Is there a an assertion check that we are locked, that could be put in
> e.g. VM_WARN_ON_ONCE()?
There is a lockdep assertion lockdep_assert_cpus_held() which could be
used. Forgot to add it.
Thanks,
tglx
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