jbd2: declare __jbd2_journal_temp_unlink_buffer() static

Signed-off-by: Jan Kara <[e-mail]>
Signed-off-by: "Theodore Ts'o" <[e-mail]>

fs/jbd2/transaction.c

···
  * of these pointers, it could go bad.  Generally the caller needs to re-read
  * the pointer from the transaction_t.
  *
- * Called under j_list_lock.  The journal may not be locked.
+ * Called under j_list_lock.
  */
-void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
+static void __jbd2_journal_temp_unlink_buffer(struct journal_head *jh)
 {
 	struct journal_head **list = NULL;
 	transaction_t *transaction;