reclaim_t
int page_lock(page_t *, se_t, kmutex_t *, reclaim_t);
int page_lock_es(page_t *, se_t, kmutex_t *, reclaim_t, int);
page_lock(page_t *pp, se_t se, kmutex_t *lock, reclaim_t reclaim)
page_lock_es(page_t *pp, se_t se, kmutex_t *lock, reclaim_t reclaim, int es)