1 files changed, 3 insertions, 0 deletions

diff --git a/fs/ext4/ext4_crypto.h b/fs/ext4/ext4_crypto.h
index 9d5d2e56cc46..6a7c0c06b2be 100644
--- a/fs/ext4/ext4_crypto.h
+++ b/fs/ext4/ext4_crypto.h
@@ -55,6 +55,9 @@ struct ext4_encryption_context {
 #define EXT4_AES_256_XTS_KEY_SIZE 64
 #define EXT4_MAX_KEY_SIZE 64
 
+#define EXT4_KEY_DESC_PREFIX "ext4:"
+#define EXT4_KEY_DESC_PREFIX_SIZE 5
+
 struct ext4_encryption_key {
         uint32_t mode;
         char raw[EXT4_MAX_KEY_SIZE];