diff --git a/fs/ext4/ext4_crypto.h b/fs/ext4/ext4_crypto.h
index c2ba35a..d75159c 100644
--- a/fs/ext4/ext4_crypto.h
+++ b/fs/ext4/ext4_crypto.h
@@ -20,12 +20,20 @@
 	char version;
 	char contents_encryption_mode;
 	char filenames_encryption_mode;
+	char flags;
 	char master_key_descriptor[EXT4_KEY_DESCRIPTOR_SIZE];
 } __attribute__((__packed__));
 
 #define EXT4_ENCRYPTION_CONTEXT_FORMAT_V1 1
 #define EXT4_KEY_DERIVATION_NONCE_SIZE 16
 
+#define EXT4_POLICY_FLAGS_PAD_4		0x00
+#define EXT4_POLICY_FLAGS_PAD_8		0x01
+#define EXT4_POLICY_FLAGS_PAD_16	0x02
+#define EXT4_POLICY_FLAGS_PAD_32	0x03
+#define EXT4_POLICY_FLAGS_PAD_MASK	0x03
+#define EXT4_POLICY_FLAGS_VALID		0x03
+
 /**
  * Encryption context for inode
  *
@@ -41,7 +49,7 @@
 	char format;
 	char contents_encryption_mode;
 	char filenames_encryption_mode;
-	char reserved;
+	char flags;
 	char master_key_descriptor[EXT4_KEY_DESCRIPTOR_SIZE];
 	char nonce[EXT4_KEY_DERIVATION_NONCE_SIZE];
 } __attribute__((__packed__));
@@ -120,6 +128,7 @@
 	struct crypto_hash *htfm;
 	struct page *workpage;
 	struct ext4_encryption_key key;
+	unsigned flags : 8;
 	unsigned has_valid_key : 1;
 	unsigned ctfm_key_is_ready : 1;
 };