sysctl_lowmem_reserve_ratio 948 include/linux/mmzone.h extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES]; sysctl_lowmem_reserve_ratio 1460 kernel/sysctl.c .data = &sysctl_lowmem_reserve_ratio, sysctl_lowmem_reserve_ratio 1461 kernel/sysctl.c .maxlen = sizeof(sysctl_lowmem_reserve_ratio), sysctl_lowmem_reserve_ratio 261 mm/page_alloc.c int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES] = { sysctl_lowmem_reserve_ratio 7728 mm/page_alloc.c if (sysctl_lowmem_reserve_ratio[idx] < 1) { sysctl_lowmem_reserve_ratio 7729 mm/page_alloc.c sysctl_lowmem_reserve_ratio[idx] = 0; sysctl_lowmem_reserve_ratio 7733 mm/page_alloc.c managed_pages / sysctl_lowmem_reserve_ratio[idx];