On Wed, 2012-12-19 at 20:31 -0500, Steven Rostedt wrote:
Talking with Thomas, the proper solution is:
> Then we have this lovely code:
>
> block/blk-ioc.c: put_io_context_active()
>
> retry:
> spin_lock_irqsave_nested(&ioc->lock, flags, 1);
> hlist_for_each_entry(icq, n, &ioc->icq_list, ioc_node) {
> if (icq->flags & ICQ_EXITED)
> continue;
> if (spin_trylock(icq->q->queue_lock)) {
> ioc_exit_icq(icq);
> spin_unlock(icq->q->queue_lock);
> } else {
> spin_unlock_irqrestore(&ioc->lock, flags);
> cpu_relax();
s/cpu_relax/cpu_chill/
-- Steve
> goto retry;
> }
> }
>
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