82 struct shrinker {  struct
83 	unsigned long (*count_objects)(struct shrinker *,  argument
85 	unsigned long (*scan_objects)(struct shrinker *,  argument
135 struct shrinker *shrinker_alloc(unsigned int flags, const char *fmt, ...);
136 void shrinker_register(struct shrinker *shrinker);
137 void shrinker_free(struct shrinker *shrinker);
139 static inline bool shrinker_try_get(struct shrinker *shrinker)  in shrinker_try_get()  argument
141 	return refcount_inc_not_zero(&shrinker->refcount);  in shrinker_try_get()
144 static inline void shrinker_put(struct shrinker *shrinker)  in shrinker_put()  argument
146 	if (refcount_dec_and_test(&shrinker->refcount))  in shrinker_put()
147 		complete(&shrinker->done);  in shrinker_put()
151 extern int __printf(2, 3) shrinker_debugfs_rename(struct shrinker *shrinker,
155 int shrinker_debugfs_rename(struct shrinker *shrinker, const char *fmt, ...)  in shrinker_debugfs_rename()  argument