extern void zfs_zevent_drain_all(int *);
extern int zfs_zevent_fd_hold(int, minor_t *, zfs_zevent_t **);
extern void zfs_zevent_fd_rele(int);
extern void zfs_zevent_drain_all(int *);
extern int zfs_zevent_fd_hold(int, minor_t *, zfs_zevent_t **);
extern void zfs_zevent_fd_rele(int);