Subject [ raid0 PATCH 2/6 ]: print to user raid0 zones

[raz ben yehuda <raziebe@gmail.com>]

informative : print to the user raid0 zones
 raid0.c |   31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
Signed-off-by: raziebe@gmail.com
diff --git a/drivers/md/raid0.c b/drivers/md/raid0.c
index df224ae..80ac685 100644
--- a/drivers/md/raid0.c
+++ b/drivers/md/raid0.c
@@ -52,6 +52,36 @@ static int raid0_congested(void *data, int bits)
 	return ret;
 }
 
+/*
+ * inform the user of the raid configuration
+*/
+static void dump_zones(mddev_t *mddev)
+{
+	int j, k, h;
+	sector_t zone_size = 0;
+	sector_t zone_start = 0;
+	char b[BDEVNAME_SIZE];
+	raid0_conf_t *conf = mddev->private;
+	printk(KERN_INFO "******* %s configuration *********",
+		mdname(mddev));
+	h = 0;
+	for (j = 0; j < conf->nr_strip_zones; j++) {
+		printk("\nzone%d", j);
+		printk("=[");
+		for (k = 0; k < conf->strip_zone[j].nb_dev; k++)
+			printk("%s/", bdevname(
+				conf->devlist[k]->bdev, b));
+		zone_size  = conf->strip_zone[j].zone_end - zone_start;
+		printk("]\n\t zone offset=%llukb "
+				"device offset=%llukb size=%llukb\n",
+			(unsigned long long)zone_start>>1,
+			(unsigned long long)conf->strip_zone[j].dev_start>>1,
+			(unsigned long long)zone_size>>1);
+		zone_start = conf->strip_zone[j].zone_end;
+	}
+	printk(KERN_INFO "**********************************\n\n");
+}
+
 static int create_strip_zones(mddev_t *mddev)
 {
 	int i, c, j, err;
@@ -291,6 +321,7 @@ static int raid0_run(mddev_t *mddev)
 	}
 
 	blk_queue_merge_bvec(mddev->queue, raid0_mergeable_bvec);
+	dump_zones(mddev);
 	return 0;
 }