*/
extern int sysfs_open(char *devnm, char *devname, char *attr);
extern int sysfs_init(struct mdinfo *mdi, int fd, char *devnm);
-extern void sysfs_init_dev(struct mdinfo *mdi, unsigned long devid);
+extern void sysfs_init_dev(struct mdinfo *mdi, dev_t devid);
extern void sysfs_free(struct mdinfo *sra);
extern struct mdinfo *sysfs_read(int fd, char *devnm, unsigned long options);
extern int sysfs_attr_match(const char *attr, const char *str);
extern int sysfs_freeze_array(struct mdinfo *sra);
extern int sysfs_wait(int fd, int *msec);
extern int load_sys(char *path, char *buf, int len);
+extern int zero_disk_range(int fd, unsigned long long sector, size_t count);
extern int reshape_prepare_fdlist(char *devname,
struct mdinfo *sra,
int raid_disks,