Re: [RFC v2 4/5] mm/swapfile: refcount block and queue before using blkcg_schedule_throttle()

[Bart Van Assche]

On 2020-04-09 14:45, Luis Chamberlain wrote:
>  		if (si->bdev) {
> +			bdev = bdgrab(si->bdev);
> +			if (!bdev)
> +				continue;
> +			/*
> +			 * By adding our own bdgrab() we ensure the queue
> +			 * sticks around until disk_release(), and so we ensure
> +			 * our release of the request_queue does not happen in
> +			 * atomic context.
> +			 */
>  			blkcg_schedule_throttle(bdev_get_queue(si->bdev),
>  						true);

How about changing the si->bdev argument of blkcg_schedule_throttle()
into bdev?

Thanks,

Bart.