1 files changed, 3 insertions, 0 deletions
diff --git a/include/block/block_int.h b/include/block/block_int.h
index 715c761fad..135c5dc0e9 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -100,6 +100,9 @@ struct BlockDriver {
      */
     bool bdrv_needs_filename;
 
+    /* Set if a driver can support backing files */
+    bool supports_backing;
+
     /* For handling image reopen for split or non-split files */
     int (*bdrv_reopen_prepare)(BDRVReopenState *reopen_state,
                                BlockReopenQueue *queue, Error **errp);