lib/maple_tree.c:336:20: warning: unused function 'mte_has_null'

[kernel test robot <lkp@intel.com>]

:::::: 
:::::: Manual check reason: "gcc: unused function warning for stub function"
:::::: 

BCC: lkp@intel.com
CC: llvm@lists.linux.dev
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Liam Howlett <liam.howlett@oracle.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: Linux Memory Management List <linux-mm@kvack.org>
CC: "Liam R. Howlett" <Liam.Howlett@oracle.com>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   7287904c8771b77b9504f53623bb477065c19a58
commit: 6e7ba8b5e2380f941dda8a1025d70c5ce5b38982 maple_tree: mte_set_full() and mte_clear_full() clang-analyzer clean up
date:   7 weeks ago
:::::: branch date: 3 hours ago
:::::: commit date: 7 weeks ago
config: x86_64-randconfig-a004-20230116 (https://download.01.org/0day-ci/archive/20230119/202301190933.XPcabbE7-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6e7ba8b5e2380f941dda8a1025d70c5ce5b38982
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 6e7ba8b5e2380f941dda8a1025d70c5ce5b38982
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   lib/maple_tree.c:326:21: warning: unused function 'mte_set_full' [-Wunused-function]
   static inline void *mte_set_full(const struct maple_enode *node)
                       ^
   lib/maple_tree.c:331:21: warning: unused function 'mte_clear_full' [-Wunused-function]
   static inline void *mte_clear_full(const struct maple_enode *node)
                       ^
>> lib/maple_tree.c:336:20: warning: unused function 'mte_has_null' [-Wunused-function]
   static inline bool mte_has_null(const struct maple_enode *node)
                      ^
   3 warnings generated.


vim +/mte_has_null +336 lib/maple_tree.c

6e7ba8b5e2380f9 Liam Howlett    2022-10-28  335  
6e7ba8b5e2380f9 Liam Howlett    2022-10-28 @336  static inline bool mte_has_null(const struct maple_enode *node)
6e7ba8b5e2380f9 Liam Howlett    2022-10-28  337  {
6e7ba8b5e2380f9 Liam Howlett    2022-10-28  338  	return (unsigned long)node & MAPLE_ENODE_NULL;
54a611b605901c7 Liam R. Howlett 2022-09-06  339  }
54a611b605901c7 Liam R. Howlett 2022-09-06  340  

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https://github.com/intel/lkp-tests