patch as-lock-macro-simplification

*** 2511,2521 ****
                          tree = &p->p_wpage;
                  else
                          tree = &as->a_wpage;
  
                  mutex_exit(&p->p_lock);
!                 AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
  
                  for (pwp = avl_first(tree); pwp != NULL;
                      pwp = AVL_NEXT(tree, pwp)) {
                          pwp->wp_read = 0;
                          pwp->wp_write = 0;
--- 2511,2521 ----
                          tree = &p->p_wpage;
                  else
                          tree = &as->a_wpage;
  
                  mutex_exit(&p->p_lock);
!                 AS_LOCK_ENTER(as, RW_WRITER);
  
                  for (pwp = avl_first(tree); pwp != NULL;
                      pwp = AVL_NEXT(tree, pwp)) {
                          pwp->wp_read = 0;
                          pwp->wp_write = 0;
*** 2526,2536 ****
                                  pwp->wp_list = p->p_wprot;
                                  p->p_wprot = pwp;
                          }
                  }
  
!                 AS_LOCK_EXIT(as, &as->a_lock);
                  mutex_enter(&p->p_lock);
          }
  
          /*
           * Unpause the process now.
--- 2526,2536 ----
                                  pwp->wp_list = p->p_wprot;
                                  p->p_wprot = pwp;
                          }
                  }
  
!                 AS_LOCK_EXIT(as);
                  mutex_enter(&p->p_lock);
          }
  
          /*
           * Unpause the process now.