On 01/15, Christian Borntraeger wrote:
>
> --- a/arch/x86/include/asm/spinlock.h
> +++ b/arch/x86/include/asm/spinlock.h
> @@ -186,7 +186,7 @@ static inline void arch_spin_unlock_wait(arch_spinlock_t
> *lock)
> __ticket_t head = ACCESS_ONCE(lock->tickets.head);
>
> for (;;) {
> - struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets);
> + struct __raw_tickets tmp = READ_ONCE(lock->tickets);
Agreed, but what about another ACCESS_ONCE() above?
Oleg.
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