[chandanr:dio-inode-completion-chain 1/1] fs/xfs/xfs_aops.c:177:21: warning: unknown attribute 'optimize' ignored

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

tree:   https://github.com/chandanr/linux dio-inode-completion-chain
head:   5f08e3ed4dcab37394794c13e3b79402ca05f3ca
commit: 5f08e3ed4dcab37394794c13e3b79402ca05f3ca [1/1] changes
config: x86_64-randconfig-a006-20230206 (https://download.01.org/0day-ci/archive/20230206/202302061644.RRCrgJQf-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://github.com/chandanr/linux/commit/5f08e3ed4dcab37394794c13e3b79402ca05f3ca
        git remote add chandanr https://github.com/chandanr/linux
        git fetch --no-tags chandanr dio-inode-completion-chain
        git checkout 5f08e3ed4dcab37394794c13e3b79402ca05f3ca
        # 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 fs/xfs/

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 >>):

>> fs/xfs/xfs_aops.c:177:21: warning: unknown attribute 'optimize' ignored [-Wunknown-attributes]
   void __attribute__((optimize("O0")))
                       ^~~~~~~~~~~~~~
   1 warning generated.


vim +/optimize +177 fs/xfs/xfs_aops.c

   176	
 > 177	void __attribute__((optimize("O0")))
   178	xfs_end_dio(
   179		struct work_struct	*work)
   180	{
   181		struct xfs_inode	*ip =
   182			container_of(work, struct xfs_inode, i_dio_work);
   183		struct iomap_dio	*dio;
   184		struct list_head	tmp;
   185		unsigned long		flags;
   186		int			nr_entries = 0;
   187	
   188		spin_lock_irqsave(&ip->i_dio_lock, flags);
   189		list_replace_init(&ip->i_dio_list, &tmp);
   190		spin_unlock_irqrestore(&ip->i_dio_lock, flags);
   191	
   192		/* chandan: do we have to sort dios? */
   193		while ((dio = list_first_entry_or_null(&tmp, struct iomap_dio,
   194								dio_list))) {
   195			struct kiocb *iocb = dio->iocb;
   196	
   197			++nr_entries;
   198			list_del_init(&dio->dio_list);
   199			iocb->ki_complete(iocb, iomap_dio_complete(dio));
   200		}
   201	
   202		return;
   203	}
   204	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests