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From: Christoph Hellwig <hch@lst.de>
To: Ming Lei <ming.lei@redhat.com>
Cc: "Jens Axboe" <axboe@kernel.dk>,
	linux-block@vger.kernel.org, "Christoph Hellwig" <hch@lst.de>,
	"Michal Koutný" <mkoutny@suse.com>,
	"Dan Schatzberg" <schatzberg.dan@gmail.com>
Subject: Re: [PATCH 2/6] loop: conver timer for monitoring idle worker into dwork
Date: Tue, 6 Jul 2021 07:52:27 +0200	[thread overview]
Message-ID: <20210706055227.GG17027@lst.de> (raw)
In-Reply-To: <20210705102607.127810-3-ming.lei@redhat.com>

On Mon, Jul 05, 2021 at 06:26:03PM +0800, Ming Lei wrote:
> +static void loop_free_idle_workers(struct work_struct *work)
> +{
> +	struct loop_device *lo = container_of(work, struct loop_device,
> +			idle_work.work);
> +	struct loop_worker *pos, *worker;
> +
> +	spin_lock(&lo->lo_work_lock);
> +	list_for_each_entry_safe(worker, pos, &lo->idle_worker_list,
> +				idle_list) {
> +		if (time_is_after_jiffies(worker->last_ran_at +
> +						LOOP_IDLE_WORKER_TIMEOUT))
> +			break;
> +		list_del(&worker->idle_list);
> +		rb_erase(&worker->rb_node, &lo->worker_tree);
> +		css_put(worker->blkcg_css);
> +		kfree(worker);
> +	}
> +	if (!list_empty(&lo->idle_worker_list))
> +		loop_set_timer(lo);
> +	spin_unlock(&lo->lo_work_lock);
> +}
> +
> +

Double empty line.  But that whole fact that the loop driver badly
reimplements work queues is just fucked up.  We need to revert this
shit.

  reply	other threads:[~2021-07-06  5:52 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-05 10:26 [PATCH 0/6] loop: cleanup charging io to mem/blkcg Ming Lei
2021-07-05 10:26 ` [PATCH 1/6] loop: clean up blkcg association Ming Lei
2021-07-06  5:51   ` Christoph Hellwig
2021-07-08  7:20     ` Ming Lei
2021-07-05 10:26 ` [PATCH 2/6] loop: conver timer for monitoring idle worker into dwork Ming Lei
2021-07-06  5:52   ` Christoph Hellwig [this message]
2021-07-08  7:23     ` Ming Lei
2021-07-05 10:26 ` [PATCH 3/6] loop: add __loop_free_idle_workers() for covering freeing workers in clearing FD Ming Lei
2021-07-05 10:26 ` [PATCH 4/6] loop: improve loop_process_work Ming Lei
2021-07-06  5:54   ` Christoph Hellwig
2021-07-05 10:26 ` [PATCH 5/6] loop: use xarray to store workers Ming Lei
2021-07-05 10:26 ` [PATCH 6/6] loop: don't add worker into idle list Ming Lei
2021-07-06 13:55   ` Dan Schatzberg
2021-07-07  3:19     ` Ming Lei
2021-07-07 13:55       ` Dan Schatzberg
2021-07-08  6:58         ` Ming Lei
2021-07-08 14:16           ` Dan Schatzberg
2021-07-08 15:01             ` Ming Lei
2021-07-08 15:15               ` Dan Schatzberg
2021-07-09  0:49                 ` Ming Lei
2021-07-09 13:47                   ` Dan Schatzberg
2021-07-08 14:41           ` Dan Schatzberg

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