From patchwork Thu Nov 18 23:43:34 2010
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Jonthan Brassow <jbrassow@redhat.com>
X-Patchwork-Id: 337851
Received: from mx3-phx2.redhat.com (mx3-phx2.redhat.com [209.132.183.24])
	by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oAINiqc7017480
	for <patchwork-dm-devel@patchwork.kernel.org>;
	Thu, 18 Nov 2010 23:45:12 GMT
Received: from lists01.pubmisc.prod.ext.phx2.redhat.com
	(lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33])
	by mx3-phx2.redhat.com (8.13.8/8.13.8) with ESMTP id oAINhhvr013626;
	Thu, 18 Nov 2010 18:43:43 -0500
Received: from int-mx02.intmail.prod.int.phx2.redhat.com
	(int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12])
	by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with
	ESMTP id oAINhfLC019889 for <dm-devel@listman.util.phx.redhat.com>;
	Thu, 18 Nov 2010 18:43:41 -0500
Received: from hydrogen.msp.redhat.com (hydrogen.msp.redhat.com [10.15.80.1])
	by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with
	ESMTP id oAINhZts023368
	(version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO)
	for <dm-devel@redhat.com>; Thu, 18 Nov 2010 18:43:36 -0500
Received: from hydrogen.msp.redhat.com ([127.0.0.1])
	by hydrogen.msp.redhat.com (8.14.1/8.14.1) with ESMTP id
	oAINhYFq010969; Thu, 18 Nov 2010 17:43:35 -0600
Received: (from jbrassow@localhost)
	by hydrogen.msp.redhat.com (8.14.1/8.14.1/Submit) id oAINhYqJ010968;
	Thu, 18 Nov 2010 17:43:34 -0600
Date: Thu, 18 Nov 2010 17:43:34 -0600
From: Jonathan Brassow <jbrassow@redhat.com>
Message-Id: <201011182343.oAINhYqJ010968@hydrogen.msp.redhat.com>
To: dm-devel@redhat.com
X-Scanned-By: MIMEDefang 2.67 on 10.5.11.12
X-loop: dm-devel@redhat.com
Subject: [dm-devel] [PATCH 8 of 9] dm raid suspend and resume fns
X-BeenThere: dm-devel@redhat.com
X-Mailman-Version: 2.1.12
Precedence: junk
Reply-To: device-mapper development <dm-devel@redhat.com>
List-Id: device-mapper development <dm-devel.redhat.com>
List-Unsubscribe: <https://www.redhat.com/mailman/options/dm-devel>,
	<mailto:dm-devel-request@redhat.com?subject=unsubscribe>
List-Archive: <https://www.redhat.com/archives/dm-devel>
List-Post: <mailto:dm-devel@redhat.com>
List-Help: <mailto:dm-devel-request@redhat.com?subject=help>
List-Subscribe: <https://www.redhat.com/mailman/listinfo/dm-devel>,
	<mailto:dm-devel-request@redhat.com?subject=subscribe>
MIME-Version: 1.0
Sender: dm-devel-bounces@redhat.com
Errors-To: dm-devel-bounces@redhat.com
X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by
	milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]);
	Thu, 18 Nov 2010 23:45:12 +0000 (UTC)


Index: linux-2.6/drivers/md/dm-raid.c
===================================================================
--- linux-2.6.orig/drivers/md/dm-raid.c
+++ linux-2.6/drivers/md/dm-raid.c
@@ -485,6 +485,25 @@ static void raid_io_hints(struct dm_targ
 			  (conf->raid_disks - conf->max_degraded));
 }
 
+static void raid_presuspend(struct dm_target *ti)
+{
+	struct raid_set *rs = ti->private;
+	md_stop_writes(&rs->md);
+}
+
+static void raid_postsuspend(struct dm_target *ti)
+{
+	struct raid_set *rs = ti->private;
+	mddev_suspend(&rs->md);
+}
+
+static void raid_resume(struct dm_target *ti)
+{
+	struct raid_set *rs = ti->private;
+
+	mddev_resume(&rs->md);
+}
+
 static struct target_type raid_target = {
 	.name = "raid",
 	.version = {1, 0, 0},
@@ -495,6 +514,9 @@ static struct target_type raid_target = 
 	.status = raid_status,
 	.iterate_devices = raid_iterate_devices,
 	.io_hints = raid_io_hints,
+	.presuspend = raid_presuspend,
+	.postsuspend = raid_postsuspend,
+	.resume = raid_resume,
 };
 
 static int __init dm_raid_init(void)