jbd2: JBD_XXX to JBD2_XXX naming cleanup

change JBD_XXX macros to JBD2_XXX in JBD2/Ext4

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index 01d8897..3595fd4 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -352,7 +352,7 @@
 		if (bh)
 			BUFFER_TRACE(bh, "found on hash");
 	}
-#ifdef JBD_EXPENSIVE_CHECKING
+#ifdef JBD2_EXPENSIVE_CHECKING
 	else {
 		struct buffer_head *bh2;
 
@@ -453,7 +453,7 @@
 		}
 	}
 
-#ifdef JBD_EXPENSIVE_CHECKING
+#ifdef JBD2_EXPENSIVE_CHECKING
 	/* There better not be one left behind by now! */
 	record = find_revoke_record(journal, bh->b_blocknr);
 	J_ASSERT_JH(jh, record == NULL);