patch as-lock-macro-simplification

*** 660,675 ****
                                  error = ENOMEM;
                                  goto cleanup;
                          }
                          locked->uioa_ppp = (void **)pfnp;
                          locked->uioa_pfncnt = pcnt;
!                         AS_LOCK_ENTER(as, &as->a_lock, RW_READER);
                          while (pcnt-- > 0) {
                                  *pfnp++ = hat_getpfnum(as->a_hat, addr);
                                  addr += PAGESIZE;
                          }
!                         AS_LOCK_EXIT(as, &as->a_lock);
                  } else {
                          /* Have a page_t list, save it */
                          locked->uioa_ppp = (void **)pages;
                          locked->uioa_pfncnt = 0;
                  }
--- 660,675 ----
                                  error = ENOMEM;
                                  goto cleanup;
                          }
                          locked->uioa_ppp = (void **)pfnp;
                          locked->uioa_pfncnt = pcnt;
!                         AS_LOCK_ENTER(as, RW_READER);
                          while (pcnt-- > 0) {
                                  *pfnp++ = hat_getpfnum(as->a_hat, addr);
                                  addr += PAGESIZE;
                          }
!                         AS_LOCK_EXIT(as);
                  } else {
                          /* Have a page_t list, save it */
                          locked->uioa_ppp = (void **)pages;
                          locked->uioa_pfncnt = 0;
                  }