mutex_tryenter(ZFS_OBJ_MUTEX((zsb), (obj_num)))
#define ZFS_OBJ_HOLD_EXIT(zsb, obj_num) \
mutex_exit(ZFS_OBJ_MUTEX((zsb), (obj_num)))
+#define ZFS_OBJ_HOLD_OWNED(zsb, obj_num) \
+ mutex_owned(ZFS_OBJ_MUTEX((zsb), (obj_num)))
/*
* Macros to encode/decode ZFS stored time values from/to struct timespec