PGREFILL         1477 mm/memcontrol.c 	seq_buf_printf(&s, "pgrefill %lu\n", memcg_events(memcg, PGREFILL));
PGREFILL         2071 mm/vmscan.c    	__count_vm_events(PGREFILL, nr_scanned);
PGREFILL         2072 mm/vmscan.c    	__count_memcg_events(lruvec_memcg(lruvec), PGREFILL, nr_scanned);