md: Export and rename kick_rdev_from_array

This export is required for clustering module in order to
co-ordinate remove/readd a rdev from all nodes.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>

drivers/md/md.c

@@ -2168,11 +2168,12 @@ static void export_rdev(struct md_rdev *rdev)
 	kobject_put(&rdev->kobj);
 }
 
-static void kick_rdev_from_array(struct md_rdev *rdev)
+void md_kick_rdev_from_array(struct md_rdev *rdev)
 {
 	unbind_rdev_from_array(rdev);
 	export_rdev(rdev);
 }
+EXPORT_SYMBOL_GPL(md_kick_rdev_from_array);
 
 static void export_array(struct mddev *mddev)
 {
@@ -2181,7 +2182,7 @@ static void export_array(struct mddev *mddev)
 	while (!list_empty(&mddev->disks)) {
 		rdev = list_first_entry(&mddev->disks, struct md_rdev,
 					same_set);
-		kick_rdev_from_array(rdev);
+		md_kick_rdev_from_array(rdev);
 	}
 	mddev->raid_disks = 0;
 	mddev->major_version = 0;
@@ -2476,7 +2477,7 @@ state_store(struct md_rdev *rdev, const char *buf, size_t len)
 			struct mddev *mddev = rdev->mddev;
 			if (mddev_is_clustered(mddev))
 				md_cluster_ops->metadata_update_start(mddev);
-			kick_rdev_from_array(rdev);
+			md_kick_rdev_from_array(rdev);
 			if (mddev->pers)
 				md_update_sb(mddev, 1);
 			md_new_event(mddev);
@@ -3134,7 +3135,7 @@ static void analyze_sbs(struct mddev *mddev)
 				"md: fatal superblock inconsistency in %s"
 				" -- removing from array\n",
 				bdevname(rdev->bdev,b));
-			kick_rdev_from_array(rdev);
+			md_kick_rdev_from_array(rdev);
 		}
 
 	super_types[mddev->major_version].
@@ -3149,7 +3150,7 @@ static void analyze_sbs(struct mddev *mddev)
 			       "md: %s: %s: only %d devices permitted\n",
 			       mdname(mddev), bdevname(rdev->bdev, b),
 			       mddev->max_disks);
-			kick_rdev_from_array(rdev);
+			md_kick_rdev_from_array(rdev);
 			continue;
 		}
 		if (rdev != freshest) {
@@ -3158,7 +3159,7 @@ static void analyze_sbs(struct mddev *mddev)
 				printk(KERN_WARNING "md: kicking non-fresh %s"
 					" from array!\n",
 					bdevname(rdev->bdev,b));
-				kick_rdev_from_array(rdev);
+				md_kick_rdev_from_array(rdev);
 				continue;
 			}
 			/* No device should have a Candidate flag
@@ -3167,7 +3168,7 @@ static void analyze_sbs(struct mddev *mddev)
 			if (test_bit(Candidate, &rdev->flags)) {
 				pr_info("md: kicking Cluster Candidate %s from array!\n",
 					bdevname(rdev->bdev, b));
-				kick_rdev_from_array(rdev);
+				md_kick_rdev_from_array(rdev);
 			}
 		}
 		if (mddev->level == LEVEL_MULTIPATH) {
@@ -5966,7 +5967,7 @@ static int hot_remove_disk(struct mddev *mddev, dev_t dev)
 	if (rdev->raid_disk >= 0)
 		goto busy;
 
-	kick_rdev_from_array(rdev);
+	md_kick_rdev_from_array(rdev);
 	md_update_sb(mddev, 1);
 	md_new_event(mddev);
 

drivers/md/md.h

@@ -671,6 +671,7 @@ extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
 extern void md_unplug(struct blk_plug_cb *cb, bool from_schedule);
 extern void md_reload_sb(struct mddev *mddev);
 extern void md_update_sb(struct mddev *mddev, int force);
+extern void md_kick_rdev_from_array(struct md_rdev * rdev);
 static inline int mddev_check_plugged(struct mddev *mddev)
 {
 	return !!blk_check_plugged(md_unplug, mddev,