[akpm-mm:mm-new 439/459] fs/proc/task_mmu.c:205:13: warning: 'reacquire_rcu' defined but not used

[akpm-mm:mm-new 439/459] fs/proc/task_mmu.c:205:13: warning: 'reacquire_rcu' defined but not used

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new
head:   383fc05d4650b021f3c17e36a145106dcc61a294
commit: 2a61a4b80dc01581dc9f6935eedefbd596e77409 [439/459] proc/task_mmu: remove unnecessary inlines in function definitions
config: openrisc-randconfig-r053-20260912 (https://download.01.org/0day-ci/archive/20260912/202609121422.hkKWuy7K-lkp@intel.com/config)
compiler: or1k-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260912/202609121422.hkKWuy7K-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609121422.hkKWuy7K-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/proc/task_mmu.c:205:13: warning: 'reacquire_rcu' defined but not used [-Wunused-function]
     205 | static void reacquire_rcu(struct proc_maps_private *priv)
         |             ^~~~~~~~~~~~~
>> fs/proc/task_mmu.c:197:13: warning: 'drop_rcu' defined but not used [-Wunused-function]
     197 | static void drop_rcu(struct proc_maps_private *priv)
         |             ^~~~~~~~
   fs/proc/task_mmu.c:133:12: warning: 'lock_ctx_mm' defined but not used [-Wunused-function]
     133 | static int lock_ctx_mm(struct proc_maps_locking_ctx *lock_ctx)
         |            ^~~~~~~~~~~


vim +/reacquire_rcu +205 fs/proc/task_mmu.c

   196	
 > 197	static void drop_rcu(struct proc_maps_private *priv)
   198	{
   199		if (priv->lock_ctx.mmap_locked)
   200			return;
   201	
   202		rcu_read_unlock();
   203	}
   204	
 > 205	static void reacquire_rcu(struct proc_maps_private *priv)
   206	{
   207		if (priv->lock_ctx.mmap_locked)
   208			return;
   209	
   210		rcu_read_lock();
   211		/* Reinitialize the iterator. */
   212		vma_iter_set(&priv->iter, priv->lock_ctx.locked_vma->vm_end);
   213	}
   214	

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