5045 use atomic_{inc,dec}_* instead of atomic_add_*

*** 5274,5288 ****
           * r_inmap after we release r_lkserlock.
           */
  
          if (nfs_rw_enter_sig(&rp->r_rwlock, RW_WRITER, INTR(vp)))
                  return (EINTR);
!         atomic_add_int(&rp->r_inmap, 1);
          nfs_rw_exit(&rp->r_rwlock);
  
          if (nfs_rw_enter_sig(&rp->r_lkserlock, RW_READER, INTR(vp))) {
!                 atomic_add_int(&rp->r_inmap, -1);
                  return (EINTR);
          }
  
          if (vp->v_flag & VNOCACHE) {
                  error = EAGAIN;
--- 5274,5288 ----
           * r_inmap after we release r_lkserlock.
           */
  
          if (nfs_rw_enter_sig(&rp->r_rwlock, RW_WRITER, INTR(vp)))
                  return (EINTR);
!         atomic_inc_uint(&rp->r_inmap);
          nfs_rw_exit(&rp->r_rwlock);
  
          if (nfs_rw_enter_sig(&rp->r_lkserlock, RW_READER, INTR(vp))) {
!                 atomic_dec_uint(&rp->r_inmap);
                  return (EINTR);
          }
  
          if (vp->v_flag & VNOCACHE) {
                  error = EAGAIN;
*** 5320,5330 ****
          error = as_map(as, *addrp, len, segvn_create, &vn_a);
          as_rangeunlock(as);
  
  done:
          nfs_rw_exit(&rp->r_lkserlock);
!         atomic_add_int(&rp->r_inmap, -1);
          return (error);
  }
  
  /* ARGSUSED */
  static int
--- 5320,5330 ----
          error = as_map(as, *addrp, len, segvn_create, &vn_a);
          as_rangeunlock(as);
  
  done:
          nfs_rw_exit(&rp->r_lkserlock);
!         atomic_dec_uint(&rp->r_inmap);
          return (error);
  }
  
  /* ARGSUSED */
  static int