extern unsigned long osc_cache_shrink_count(struct shrinker *sk,
struct shrink_control *sc);
extern unsigned long osc_cache_shrink_scan(struct shrinker *sk,
extern unsigned long osc_cache_shrink_count(struct shrinker *sk,
struct shrink_control *sc);
extern unsigned long osc_cache_shrink_scan(struct shrinker *sk,