linux-kernel - Re: [PATCH 01/17] drbd: introduce drbd_recv_header_maybe

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Message-ID: <5783324.F96FteIkt8@fat-tyre>
Date:   Mon, 28 Aug 2017 15:35:44 +0200
From:   Philipp Reisner <philipp.reisner@...bit.com>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     linux-kernel@...r.kernel.org, drbd-dev@...ts.linbit.com
Subject: Re: [PATCH 01/17] drbd: introduce drbd_recv_header_maybe_unplug

Am Freitag, 25. August 2017, 19:26:20 CEST schrieb Jens Axboe:
> 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?

Facepalm. That escaped from out out-of-tree code. It has compat code
so that it can be compiled with older (distro) kernels. I will resend
it without that.