On Mon, Jul 3, 2017 at 3:30 PM, Paul E. McKenney
<[email protected]> wrote:
>
> That certainly is one interesting function, isn't it? I wonder what
> happens if you replace the raw_spin_is_locked() calls with an
> unlock under a trylock check? ;-)
Deadlock due to interrupts again?
Didn't your spin_unlock_wait() patches teach you anything? Checking
state is fundamentally different from taking the lock. Even a trylock.
I guess you could try with the irqsave versions. But no, we're not doing that.
Linus
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