const-ify make segment ops structures There is no reason to keep the segment ops structures writable.
@@ -295,12 +295,12 @@ } vmu_data_t; extern struct as kas; extern proc_t *practive; extern zone_t *global_zone; -extern struct seg_ops segvn_ops; -extern struct seg_ops segspt_shmops; +extern const struct seg_ops segvn_ops; +extern const struct seg_ops segspt_shmops; static vmu_data_t vmu_data; static kmem_cache_t *vmu_bound_cache; static kmem_cache_t *vmu_object_cache;