_mutex_trylock_nest_lock
extern int _mutex_trylock_nest_lock(struct mutex *lock, struct lockdep_map *nest_lock) __cond_acquires(true, lock);
_mutex_trylock_nest_lock(lock, &(nest_lock)->dep_map) \
#define mutex_trylock(lock) _mutex_trylock_nest_lock(lock, NULL)
EXPORT_SYMBOL(_mutex_trylock_nest_lock);
EXPORT_SYMBOL_GPL(_mutex_trylock_nest_lock);