-static int s_flag = 0; /* show progress of test */
-static int force = 0; /* force check of mounted device */
-static int t_flag = 0; /* number of test patterns */
-static int t_max = 0; /* allocated test patterns */
-static unsigned int *t_patts = NULL; /* test patterns */
-static int current_O_DIRECT = 0; /* Current status of O_DIRECT flag */
-static int use_buffered_io = 0;
-static int exclusive_ok = 0;
-static unsigned int max_bb = 0; /* Abort test if more than this number of bad blocks has been encountered */
-static unsigned int d_flag = 0; /* delay factor between reads */
+static int s_flag; /* show progress of test */
+static int force; /* force check of mounted device */
+static int t_flag; /* number of test patterns */
+static int t_max; /* allocated test patterns */
+static unsigned int *t_patts; /* test patterns */
+static int use_buffered_io;
+static int exclusive_ok;
+static unsigned int max_bb = MAX_BAD_BLOCKS; /* Abort test if more than this
+ * number of bad blocks has been
+ * encountered */
+static unsigned int d_flag; /* delay factor between reads */