ref: 463bbddb8d6cdc1fb3df8dce42b9b5e0afd3cedb
dir: /sys/src/cmd/cfs/lru.h/
typedef struct Lruhead Lruhead; typedef struct Lru Lru; struct Lru { Lru *lprev; Lru *lnext; }; void lruinit(Lru*); void lruadd(Lru*, Lru*); void lruref(Lru*, Lru*); void lruderef(Lru*, Lru*);