1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index dff2e333756d..a40e898fe57e 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -569,6 +569,18 @@ enum recovery_flags {
 	MD_RESYNCING_REMOTE,	/* remote node is running resync thread */
 };
 
+enum md_ro_state {
+	MD_RDWR,
+	MD_RDONLY,
+	MD_AUTO_READ,
+	MD_MAX_STATE
+};
+
+static inline bool md_is_rdwr(struct mddev *mddev)
+{
+	return (mddev->ro == MD_RDWR);
+}
+
 static inline int __must_check mddev_lock(struct mddev *mddev)
 {
 	return mutex_lock_interruptible(&mddev->reconfig_mutex);