ext4/jbd2: add metadata checksumming to the list of supported features

Activate the metadata checksumming feature by adding it to ext4 and
jbd2's lists of supported features.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 0ee9669..d1e2735 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1494,7 +1494,8 @@
 					 EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE | \
 					 EXT4_FEATURE_RO_COMPAT_BTREE_DIR |\
 					 EXT4_FEATURE_RO_COMPAT_HUGE_FILE |\
-					 EXT4_FEATURE_RO_COMPAT_BIGALLOC)
+					 EXT4_FEATURE_RO_COMPAT_BIGALLOC |\
+					 EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)
 
 /*
  * Default values for user and/or group using reserved blocks
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index a9632bc..f334c7f 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -296,7 +296,8 @@
 #define JBD2_KNOWN_ROCOMPAT_FEATURES	0
 #define JBD2_KNOWN_INCOMPAT_FEATURES	(JBD2_FEATURE_INCOMPAT_REVOKE | \
 					JBD2_FEATURE_INCOMPAT_64BIT | \
-					JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT)
+					JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT | \
+					JBD2_FEATURE_INCOMPAT_CSUM_V2)
 
 #ifdef __KERNEL__