#unconditional
VM_OVERCOMMIT_MEMORY
VM_PAGE_CLUSTER
VM_DIRTY_BACKGROUND
VM_DIRTY_RATIO
VM_DIRTY_WB_CS
VM_DIRTY_EXPIRE_CS
VM_NR_PDFLUSH_THREADS
VM_OVERCOMMIT_RATIO
VM_PAGEBUF
VM_HUGETLB_PAGES
VM_SWAPPINESS
VM_LOWMEM_RESERVE_RATIO
VM_MIN_FREE_KBYTES
#conditional
VM_MAX_MAP_COUNT
VM_LAPTOP_MODE
VM_BLOCK_DUMP
VM_HUGETLB_GROUP
VM_VFS_CACHE_PRESSURE
VM_LEGACY_VA_LAYOUT
VM_SWAP_TOKEN_TIMEOUT