const-ify make segment ops structures
There is no reason to keep the segment ops structures writable.
patch lower-case-segops

*** 8366,8388 ****
           * segdev is allowed here as it is already locked.  This allows
           * for memory exported by drivers through mmap() (which is already
           * locked) to be allowed for LONGTERM.
           */
          if (flags & DDI_UMEMLOCK_LONGTERM) {
!                 extern  struct seg_ops segspt_shmops;
!                 extern  struct seg_ops segdev_ops;
                  AS_LOCK_ENTER(as, &as->a_lock, RW_READER);
                  for (seg = as_segat(as, addr); ; seg = AS_SEGNEXT(as, seg)) {
                          if (seg == NULL || seg->s_base > addr + len)
                                  break;
                          if (seg->s_ops == &segdev_ops)
                                  continue;
                          if (((seg->s_ops != &segvn_ops) &&
                              (seg->s_ops != &segspt_shmops)) ||
!                             ((SEGOP_GETVP(seg, addr, &vp) == 0 &&
                              vp != NULL && vp->v_type == VREG) &&
!                             (SEGOP_GETTYPE(seg, addr) & MAP_SHARED))) {
                                  as_pageunlock(as, p->pparray,
                                      addr, len, p->s_flags);
                                  AS_LOCK_EXIT(as, &as->a_lock);
                                  umem_decr_devlockmem(p);
                                  kmem_free(p, sizeof (struct ddi_umem_cookie));
--- 8366,8388 ----
           * segdev is allowed here as it is already locked.  This allows
           * for memory exported by drivers through mmap() (which is already
           * locked) to be allowed for LONGTERM.
           */
          if (flags & DDI_UMEMLOCK_LONGTERM) {
!                 extern const struct seg_ops segspt_shmops;
!                 extern const struct seg_ops segdev_ops;
                  AS_LOCK_ENTER(as, &as->a_lock, RW_READER);
                  for (seg = as_segat(as, addr); ; seg = AS_SEGNEXT(as, seg)) {
                          if (seg == NULL || seg->s_base > addr + len)
                                  break;
                          if (seg->s_ops == &segdev_ops)
                                  continue;
                          if (((seg->s_ops != &segvn_ops) &&
                              (seg->s_ops != &segspt_shmops)) ||
!                             ((segop_getvp(seg, addr, &vp) == 0 &&
                              vp != NULL && vp->v_type == VREG) &&
!                             (segop_gettype(seg, addr) & MAP_SHARED))) {
                                  as_pageunlock(as, p->pparray,
                                      addr, len, p->s_flags);
                                  AS_LOCK_EXIT(as, &as->a_lock);
                                  umem_decr_devlockmem(p);
                                  kmem_free(p, sizeof (struct ddi_umem_cookie));