On Wed, 7 Aug 2013, Kent Overstreet wrote:
> +{
> + DEFINE_WAIT(wait);
> + struct percpu_ida_cpu *tags;
> + unsigned long flags;
> + unsigned this_cpu;
> + int tag;
> +
> + local_irq_save(flags);
> + this_cpu = smp_processor_id();
> + tags = per_cpu_ptr(pool->tag_cpu, this_cpu);
tags = this_cpu_ptr(pool->tag_cpu);
> + schedule();
> +
> + local_irq_save(flags);
> + this_cpu = smp_processor_id();
> + tags = per_cpu_ptr(pool->tag_cpu, this_cpu);
And the same here.
> +void percpu_ida_free(struct percpu_ida *pool, unsigned tag)
> +{
> + struct percpu_ida_cpu *tags;
> + unsigned long flags;
> + unsigned nr_free, this_cpu;
> +
> + BUG_ON(tag >= pool->nr_tags);
> +
> + local_irq_save(flags);
> + this_cpu = smp_processor_id();
> + tags = per_cpu_ptr(pool->tag_cpu, this_cpu);
And again
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