On 08/24/2017 03:22 PM, Philipp Reisner wrote:> +#ifndef blk_queue_plugged> +struct drbd_plug_cb {> + struct blk_plug_cb cb;> + struct drbd_request *most_recent_req;> + /* do we need more? */> +};What is this blk_queue_plugged ifdef?-- Jens Axboe