linux-kernel - Re: [PATCH 06/10 V2] workqueue: convert worker_idr to worker

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Message-ID: <20140512214030.GG18959@mtj.dyndns.org>
Date:	Mon, 12 May 2014 17:40:30 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Lai Jiangshan <laijs@...fujitsu.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/10 V2] workqueue: convert worker_idr to worker_ida

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
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.

-- 
tejun
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