1 files changed, 3 insertions, 1 deletions
diff --git a/ctree.h b/ctree.h
index a6d6c3de..3c396e7d 100644
--- a/ctree.h
+++ b/ctree.h
@@ -497,7 +497,9 @@ struct btrfs_super_block {
  * added here until read-write support for the free space tree is implemented in
  * btrfs-progs.
  */
-#define BTRFS_FEATURE_COMPAT_RO_SUPP		0ULL
+#define BTRFS_FEATURE_COMPAT_RO_SUPP			\
+	(BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE |	\
+	 BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID)
 
 #define BTRFS_FEATURE_INCOMPAT_SUPP			\
 	(BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF |		\