On 06/18/2013 02:45 AM, Tim Chen wrote:
>>> + if (unlikely(sem->count < RWSEM_WAITING_BIAS)) {
>>> > > + cpu_relax();
>>> > > + continue;
>>> > > + }
> The above two if statements could be cleaned up as a single check:
>
> if (unlikely(sem->count < RWSEM_WAITING_BIAS))
> return sem;
>
> This one statement is sufficient to check that we don't have a writer
> stolen the lock before we attempt to acquire the read lock by modifying
> sem->count.
>
>
Thanks. I will send out the patchset base your suggestion.
--
Thanks
Alex
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