JBD: replace jbd_kmalloc with kmalloc directly

This patch cleans up jbd_kmalloc and replace it with kmalloc directly

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
diff --git a/fs/jbd/transaction.c b/fs/jbd/transaction.c
index db84045..0282deb 100644
--- a/fs/jbd/transaction.c
+++ b/fs/jbd/transaction.c
@@ -96,8 +96,8 @@
 
 alloc_transaction:
 	if (!journal->j_running_transaction) {
-		new_transaction = jbd_kmalloc(sizeof(*new_transaction),
-						GFP_NOFS);
+		new_transaction = kmalloc(sizeof(*new_transaction),
+						GFP_NOFS|__GFP_NOFAIL);
 		if (!new_transaction) {
 			ret = -ENOMEM;
 			goto out;