Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757040AbdHYR0Z (ORCPT ); Fri, 25 Aug 2017 13:26:25 -0400 Received: from mail-io0-f177.google.com ([209.85.223.177]:34934 "EHLO mail-io0-f177.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754454AbdHYR0X (ORCPT ); Fri, 25 Aug 2017 13:26:23 -0400 Subject: Re: [PATCH 01/17] drbd: introduce drbd_recv_header_maybe_unplug To: Philipp Reisner , linux-kernel@vger.kernel.org Cc: drbd-dev@lists.linbit.com References: <1503609794-13233-1-git-send-email-philipp.reisner@linbit.com> <1503609794-13233-2-git-send-email-philipp.reisner@linbit.com> From: Jens Axboe Message-ID: Date: Fri, 25 Aug 2017 11:26:20 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <1503609794-13233-2-git-send-email-philipp.reisner@linbit.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 258 Lines: 12 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