vm_object_page_clean
vm_object_page_clean(obj, 0, 0, opcflags);
vm_object_page_clean(obj, 0, 0, 0);
vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
vm_object_page_clean(obj, 0, 0, 0);
vm_object_page_clean(vp->v_object, 0, 0, OBJPC_SYNC);
vm_object_page_clean(vp->v_object, off / PAGE_SIZE,
vm_object_page_clean(object, 0, 0, OBJPC_SYNC);
vm_object_page_clean(object,
vm_object_page_clean(object, 0, 0, OBJPC_SYNC);
void vm_object_page_clean (vm_object_t, vm_pindex_t, vm_pindex_t, int);