Re: [PATCH v5 05/45] percpu_rwlock: Make percpu-rwlocks IRQ-safe,optimally

[Srivatsa S. Bhat]

On 02/11/2013 12:12 AM, Oleg Nesterov wrote:
> only one cosmetic nit...
> 
> On 01/22, Srivatsa S. Bhat wrote:
>>
>> +#define READER_PRESENT		(1UL << 16)
>> +#define READER_REFCNT_MASK	(READER_PRESENT - 1)
>> +
>>  #define reader_uses_percpu_refcnt(pcpu_rwlock, cpu)			\
>>  		(ACCESS_ONCE(per_cpu(*((pcpu_rwlock)->reader_refcnt), cpu)))
>>
>>  #define reader_nested_percpu(pcpu_rwlock)				\
>> -			(__this_cpu_read(*((pcpu_rwlock)->reader_refcnt)) > 1)
>> +	(__this_cpu_read(*((pcpu_rwlock)->reader_refcnt)) & READER_REFCNT_MASK)
>>
>>  #define writer_active(pcpu_rwlock)					\
>>  			(__this_cpu_read(*((pcpu_rwlock)->writer_signal)))
> 
> I think this all can go to lib/percpu-rwlock.c. Nobody needs to know
> these implementation details.
> 

Ok, will move them.
 
Regards,
Srivatsa S. Bhat

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/