On 05/13/2014 05:40 AM, Tejun Heo wrote:
> On Mon, May 12, 2014 at 02:56:18PM +0800, Lai Jiangshan wrote:
>> @@ -1681,7 +1682,6 @@ static void worker_detach_from_pool(struct worker 
>> *worker,
>>      struct completion *detach_completion = NULL;
>>  
>>      mutex_lock(&pool->manager_mutex);
>> -    idr_remove(&pool->worker_idr, worker->id);
>>      list_del(&worker->node);
>>      if (list_empty(&pool->workers))
>>              detach_completion = pool->detach_completion;
> 
> Why are we moving ida removal to the caller here?  Does

ida                                                     is for worker ID
pool->workers list and worker_detach_from_pool()        are for 
attaching/detaching

moving ida removal to the caller removes the unneeded coupling.

> worker_detach_from_pool() get used for something else later?  Up until
> this point, the distinction seems pretty arbitrary.
> 
>> @@ -1757,8 +1754,6 @@ static struct worker *create_worker(struct worker_pool 
>> *pool)
>>      if (pool->flags & POOL_DISASSOCIATED)
>>              worker->flags |= WORKER_UNBOUND;
>>  
>> -    /* successful, commit the pointer to idr */
>> -    idr_replace(&pool->worker_idr, worker, worker->id);
> 
> Ah, the comment is removed altogether.  Please disregard my previous
> review on the comment.
> 
> Thanks.
> 

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