On 2021-08-04 12:17:04 [-0400], Steven Rostedt wrote:
> Perhaps in this situation, we could open code it to:
>
> if (stall_hash != -1U) {
> raw_spin_unlock(&wqe->lock);
>
> /* On RT the spin_lock_irq() does not disable interrupts */
> if (IS_ENABLED(CONFIG_PREEMPT_RT))
> local_irq_enable();
no preemption happens here with NEED_RESCHED set.
> io_wait_on_hash(wqe, stall_hash);
>
> if (IS_ENABLED(CONFIG_PREEMPT_RT))
> local_irq_disable();
> raw_spin_lock(&wqe->lock);
> }
>
> Note, I haven't looked at the rest of the code to know the ripple
> effect of this, but I'm just suggesting the idea.
>
Sebastian
