diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 46af6aa60a8e..a55f7a45fa78 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -118,8 +118,8 @@ xfs_mount_validate_sb(
 	bool		check_inprogress,
 	bool		check_version)
 {
-	u32		agcount = 0;
-	u32		rem;
+	uint32_t	agcount = 0;
+	uint32_t	rem;
 
 	if (sbp->sb_magicnum != XFS_SB_MAGIC) {
 		xfs_warn(mp, "bad magic number");
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index f3e0001f9992..7aba628dc527 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -1666,9 +1666,12 @@ xfs_fs_fill_super(
 			"DAX unsupported by block device. Turning off DAX.");
 			mp->m_flags &= ~XFS_MOUNT_DAX;
 		}
-		if (xfs_sb_version_hasreflink(&mp->m_sb))
+		if (xfs_sb_version_hasreflink(&mp->m_sb)) {
 			xfs_alert(mp,
 		"DAX and reflink cannot be used together!");
+			error = -EINVAL;
+			goto out_filestream_unmount;
+		}
 	}
 
 	if (mp->m_flags & XFS_MOUNT_DISCARD) {
@@ -1681,15 +1684,18 @@ xfs_fs_fill_super(
 		}
 	}
 
-	if (xfs_sb_version_hasrmapbt(&mp->m_sb)) {
-		if (mp->m_sb.sb_rblocks) {
-			xfs_alert(mp,
-	"EXPERIMENTAL reverse mapping btree not compatible with realtime device!");
-			error = -EINVAL;
-			goto out_filestream_unmount;
-		}
+	if (xfs_sb_version_hasreflink(&mp->m_sb) && mp->m_sb.sb_rblocks) {
 		xfs_alert(mp,
-	"EXPERIMENTAL reverse mapping btree feature enabled. Use at your own risk!");
+	"reflink not compatible with realtime device!");
+		error = -EINVAL;
+		goto out_filestream_unmount;
+	}
+
+	if (xfs_sb_version_hasrmapbt(&mp->m_sb) && mp->m_sb.sb_rblocks) {
+		xfs_alert(mp,
+	"reverse mapping btree not compatible with realtime device!");
+		error = -EINVAL;
+		goto out_filestream_unmount;
 	}
 
 	error = xfs_mountfs(mp);
diff --git a/fs/xfs/xfs_super.h b/fs/xfs/xfs_super.h
index fcc5dfc70aa0..8cee8e8050e3 100644
--- a/fs/xfs/xfs_super.h
+++ b/fs/xfs/xfs_super.h
@@ -44,6 +44,12 @@ extern void xfs_qm_exit(void);
 # define XFS_REALTIME_STRING
 #endif
 
+#ifdef CONFIG_XFS_ONLINE_SCRUB
+# define XFS_SCRUB_STRING	"scrub, "
+#else
+# define XFS_SCRUB_STRING
+#endif
+
 #ifdef DEBUG
 # define XFS_DBG_STRING		"debug"
 #else
@@ -54,6 +60,7 @@ extern void xfs_qm_exit(void);
 #define XFS_BUILD_OPTIONS	XFS_ACL_STRING \
 				XFS_SECURITY_STRING \
 				XFS_REALTIME_STRING \
+				XFS_SCRUB_STRING \
 				XFS_DBG_STRING /* DBG must be last */
 
 struct xfs_inode;