* Cannot assert osc_page_protected() here as read-ahead
* creates temporary pages outside of a lock.
*/
-#ifdef INVARIANT_CHECK
+#ifdef CONFIG_LUSTRE_DEBUG_EXPENSIVE_CHECK
opg->ops_temp = !osc_page_protected(env, opg, CLM_READ, 1);
#endif
/* ops_inflight and ops_lru are the same field, but it doesn't