Function dbuf_add_ref

freebsd/contrib/openzfs/module/zfs/dbuf.c:3547–3552

#pragma weak dmu_buf_add_ref = dbuf_add_ref
void
dbuf_add_ref(dmu_buf_impl_t *db, void *tag)
{
	int64_t holds = zfs_refcount_add(&db->db_holds, tag);
	VERIFY3S(holds, >, 1);
}

#pragma weak dmu_buf_try_add_ref = dbuf_try_add_ref
boolean_t