From patchwork Tue Apr 12 16:42:46 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brian Foster X-Patchwork-Id: 8812661 Return-Path: X-Original-To: patchwork-linux-block@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 6AE57C0553 for ; Tue, 12 Apr 2016 16:43:24 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A210F20306 for ; Tue, 12 Apr 2016 16:43:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 804232035B for ; Tue, 12 Apr 2016 16:43:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933736AbcDLQnN (ORCPT ); Tue, 12 Apr 2016 12:43:13 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48714 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964837AbcDLQnG (ORCPT ); Tue, 12 Apr 2016 12:43:06 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id DAB187822B; Tue, 12 Apr 2016 16:42:54 +0000 (UTC) Received: from bfoster.bfoster (dhcp-41-153.bos.redhat.com [10.18.41.153]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u3CGgsHM003661; Tue, 12 Apr 2016 12:42:54 -0400 Received: by bfoster.bfoster (Postfix, from userid 1000) id 509A712543B; Tue, 12 Apr 2016 12:42:53 -0400 (EDT) From: Brian Foster To: xfs@oss.sgi.com Cc: linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, dm-devel@redhat.com, Mike Snitzer Subject: [RFC v2 PATCH 03/10] block: add block_device_operations methods to set and get reserved space Date: Tue, 12 Apr 2016 12:42:46 -0400 Message-Id: <1460479373-63317-4-git-send-email-bfoster@redhat.com> In-Reply-To: <1460479373-63317-1-git-send-email-bfoster@redhat.com> References: <1460479373-63317-1-git-send-email-bfoster@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Spam-Status: No, score=-7.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Mike Snitzer [BF: - Killed wrapper functions. - Condensed to single bdev op.] Signed-off-by: Mike Snitzer --- include/linux/blkdev.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 669e419..6c6ea96 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1650,6 +1650,10 @@ struct blk_dax_ctl { pfn_t pfn; }; +#define BDEV_RES_GET 0 +#define BDEV_RES_MOD (1 << 0) +#define BDEV_RES_PROVISION (1 << 1) + struct block_device_operations { int (*open) (struct block_device *, fmode_t); void (*release) (struct gendisk *, fmode_t); @@ -1667,6 +1671,8 @@ struct block_device_operations { int (*getgeo)(struct block_device *, struct hd_geometry *); /* this callback is with swap_lock and sometimes page table lock held */ void (*swap_slot_free_notify) (struct block_device *, unsigned long); + int (*reserve_space) (struct block_device *, int, sector_t, sector_t, + sector_t *); struct module *owner; const struct pr_ops *pr_ops; };