1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index b2d8813ed716..292dad31d5e5 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1807,10 +1807,19 @@ md_mismatches = __ATTR_RO(mismatch_cnt);
 static struct attribute *md_default_attrs[] = {
         &md_level.attr,
         &md_raid_disks.attr,
+        NULL,
+};
+
+static struct attribute *md_redundancy_attrs[] = {
         &md_scan_mode.attr,
         &md_mismatches.attr,
         NULL,
 };
+static struct attribute_group md_redundancy_group = {
+        .name = NULL,
+        .attrs = md_redundancy_attrs,
+};
+
 
 static ssize_t
 md_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
@@ -2047,6 +2056,8 @@ static int do_md_run(mddev_t * mddev)
                 bitmap_destroy(mddev);
                 return err;
         }
+        if (mddev->pers->sync_request)
+                sysfs_create_group(&mddev->kobj, &md_redundancy_group);
         atomic_set(&mddev->writes_pending,0);
         mddev->safemode = 0;
         mddev->safemode_timer.function = md_safemode_timeout;
@@ -2155,6 +2166,9 @@ static int do_md_stop(mddev_t * mddev, int ro)
                                 set_disk_ro(disk, 0);
                         blk_queue_make_request(mddev->queue, md_fail_request);
                         mddev->pers->stop(mddev);
+                        if (mddev->pers->sync_request)
+                                sysfs_remove_group(&mddev->kobj, &md_redundancy_group);
+
                         module_put(mddev->pers->owner);
                         mddev->pers = NULL;
                         if (mddev->ro)