2 files changed, 4 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 3387f940140b..5ed57688e5c5 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5634,6 +5634,9 @@ static int get_array_info(struct mddev *mddev, void __user *arg)
                 info.state = (1<<MD_SB_CLEAN);
         if (mddev->bitmap && mddev->bitmap_info.offset)
                 info.state |= (1<<MD_SB_BITMAP_PRESENT);
+        if (mddev_is_clustered(mddev))
+                info.state |= (1<<MD_SB_CLUSTERED);
+
         info.active_disks  = insync;
         info.working_disks = working;
         info.failed_disks  = failed;
diff --git a/include/uapi/linux/raid/md_p.h b/include/uapi/linux/raid/md_p.h
index 49f4210d4394..643489d33e68 100644
--- a/include/uapi/linux/raid/md_p.h
+++ b/include/uapi/linux/raid/md_p.h
@@ -101,6 +101,7 @@ typedef struct mdp_device_descriptor_s {
 #define MD_SB_CLEAN             0
 #define MD_SB_ERRORS            1
 
+#define MD_SB_CLUSTERED         5 /* MD is clustered */
 #define MD_SB_BITMAP_PRESENT    8 /* bitmap may be present nearby */
 
 /*