extern void zfs_zinactive(znode_t *);
extern void zfs_znode_delete(znode_t *, dmu_tx_t *);
extern void zfs_znode_free(znode_t *);
-extern void zfs_remove_op_tables();
-extern int zfs_create_op_tables();
+extern void zfs_remove_op_tables(void);
+extern int zfs_create_op_tables(void);
extern int zfs_sync(vfs_t *vfsp, short flag, cred_t *cr);
extern dev_t zfs_cmpldev(uint64_t);
extern int zfs_get_zplprop(objset_t *os, zfs_prop_t prop, uint64_t *value);