diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 602d5ad..307ecd1 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -377,6 +377,7 @@
  */
 #define EXT4_FREE_BLOCKS_METADATA	0x0001
 #define EXT4_FREE_BLOCKS_FORGET		0x0002
+#define EXT4_FREE_BLOCKS_VALIDATED	0x0004
 
 /*
  * ioctl commands