1#unconditional
2VM_OVERCOMMIT_MEMORY
3VM_PAGE_CLUSTER
4VM_DIRTY_BACKGROUND
5VM_DIRTY_RATIO
6VM_DIRTY_WB_CS
7VM_DIRTY_EXPIRE_CS
8VM_NR_PDFLUSH_THREADS
9VM_OVERCOMMIT_RATIO
10VM_PAGEBUF
11VM_HUGETLB_PAGES
12VM_SWAPPINESS
13VM_LOWMEM_RESERVE_RATIO
14VM_MIN_FREE_KBYTES
15#conditional
16VM_MAX_MAP_COUNT
17VM_LAPTOP_MODE
18VM_BLOCK_DUMP
19VM_HUGETLB_GROUP
20VM_VFS_CACHE_PRESSURE
21VM_LEGACY_VA_LAYOUT
22VM_SWAP_TOKEN_TIMEOUT
23