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/recovery.c b/fs/jbd2/recovery.c
index b50be8a..d0ce627 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -311,7 +311,7 @@
 static inline unsigned long long read_tag_block(int tag_bytes, journal_block_tag_t *tag)
 {
 	unsigned long long block = be32_to_cpu(tag->t_blocknr);
-	if (tag_bytes > JBD_TAG_SIZE32)
+	if (tag_bytes > JBD2_TAG_SIZE32)
 		block |= (u64)be32_to_cpu(tag->t_blocknr_high) << 32;
 	return block;
 }