../fs/namespace.c:1779:1: warning: unused function 'class_namespace_lock_lock_err' [-Wunused-function]
 1779 | DEFINE_GUARD(namespace_lock, struct rw_semaphore *, namespace_lock(), namespace_unlock())
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/cleanup.h:380:2: note: expanded from macro 'DEFINE_GUARD'
  380 |         DEFINE_CLASS_IS_GUARD(_name)
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/cleanup.h:372:2: note: expanded from macro 'DEFINE_CLASS_IS_GUARD'
  372 |         __DEFINE_GUARD_LOCK_PTR(_name, _T)
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/cleanup.h:358:20: note: expanded from macro '__DEFINE_GUARD_LOCK_PTR'
  358 |         static inline int class_##_name##_lock_err(class_##_name##_t *_T)   \
      |                           ^~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:47:1: note: expanded from here
   47 | class_namespace_lock_lock_err
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
Warning: ../fs/namespace.c:2772 function parameter 'pinned' not described in 'do_lock_mount'
../fs/namespace.c:1779:1: warning: unused function 'class_namespace_lock_lock_err' [-Wunused-function]
 1779 | DEFINE_GUARD(namespace_lock, struct rw_semaphore *, namespace_lock(), namespace_unlock())
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/cleanup.h:380:2: note: expanded from macro 'DEFINE_GUARD'
  380 |         DEFINE_CLASS_IS_GUARD(_name)
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/cleanup.h:372:2: note: expanded from macro 'DEFINE_CLASS_IS_GUARD'
  372 |         __DEFINE_GUARD_LOCK_PTR(_name, _T)
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../include/linux/cleanup.h:358:20: note: expanded from macro '__DEFINE_GUARD_LOCK_PTR'
  358 |         static inline int class_##_name##_lock_err(class_##_name##_t *_T)   \
      |                           ^~~~~~~~~~~~~~~~~~~~~~~~
<scratch space>:47:1: note: expanded from here
   47 | class_namespace_lock_lock_err
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
Warning: ../fs/namespace.c:2772 function parameter 'pinned' not described in 'do_lock_mount'