pfmemalloc_reserve 3135 mm/vmscan.c unsigned long pfmemalloc_reserve = 0; pfmemalloc_reserve 3151 mm/vmscan.c pfmemalloc_reserve += min_wmark_pages(zone); pfmemalloc_reserve 3156 mm/vmscan.c if (!pfmemalloc_reserve) pfmemalloc_reserve 3159 mm/vmscan.c wmark_ok = free_pages > pfmemalloc_reserve / 2;