It is only used in one place.
-struct mntentchn *mtab_head (void);
struct mntentchn *getmntoptfile (const char *file);
struct mntentchn *getmntdirbackward (const char *dir, struct mntentchn *mc);
struct mntentchn *getmntdevbackward (const char *dev, struct mntentchn *mc);
struct mntentchn *getmntoptfile (const char *file);
struct mntentchn *getmntdirbackward (const char *dir, struct mntentchn *mc);
struct mntentchn *getmntdevbackward (const char *dev, struct mntentchn *mc);
static void read_mounttable(void);
static void read_mounttable(void);
+static struct mntentchn *
mtab_head() {
if (!got_mtab)
read_mounttable();
mtab_head() {
if (!got_mtab)
read_mounttable();