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SubjectRe: [PATCH 01/17] drbd: introduce drbd_recv_header_maybe_unplug
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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

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