[ceph-client:testing 19/80] fs/ceph/super.c:1122:15: error: implicit declaration of function 'fscrypt_add_test_dummy_key'

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

tree:   https://github.com/ceph/ceph-client.git testing
head:   bc74c6176640bed8ff55211d4211658413f5c19c
commit: 72326544b6f873e44659da920b51572bdf76b143 [19/80] ceph: implement -o test_dummy_encryption mount option
config: nios2-allmodconfig (https://download.01.org/0day-ci/archive/20230321/202303211100.ExmaGnB0-lkp@intel.com/config)
compiler: nios2-linux-gcc (GCC) 12.1.0
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/ceph/ceph-client/commit/72326544b6f873e44659da920b51572bdf76b143
        git remote add ceph-client https://github.com/ceph/ceph-client.git
        git fetch --no-tags ceph-client testing
        git checkout 72326544b6f873e44659da920b51572bdf76b143
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=nios2 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=nios2 SHELL=/bin/bash fs/ceph/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303211100.ExmaGnB0-lkp@intel.com/

All errors (new ones prefixed by >>):

   fs/ceph/super.c: In function 'ceph_apply_test_dummy_encryption':
>> fs/ceph/super.c:1122:15: error: implicit declaration of function 'fscrypt_add_test_dummy_key' [-Werror=implicit-function-declaration]
    1122 |         err = fscrypt_add_test_dummy_key(sb, &fsc->fsc_dummy_enc_policy);
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/fscrypt_add_test_dummy_key +1122 fs/ceph/super.c

  1088	
  1089	#ifdef CONFIG_FS_ENCRYPTION
  1090	static int ceph_apply_test_dummy_encryption(struct super_block *sb,
  1091						    struct fs_context *fc,
  1092						    struct ceph_mount_options *fsopt)
  1093	{
  1094		struct ceph_fs_client *fsc = sb->s_fs_info;
  1095		int err;
  1096	
  1097		if (!fscrypt_is_dummy_policy_set(&fsopt->dummy_enc_policy))
  1098			return 0;
  1099	
  1100		/* No changing encryption context on remount. */
  1101		if (fc->purpose == FS_CONTEXT_FOR_RECONFIGURE &&
  1102		    !fscrypt_is_dummy_policy_set(&fsc->fsc_dummy_enc_policy)) {
  1103			if (fscrypt_dummy_policies_equal(&fsopt->dummy_enc_policy,
  1104							 &fsc->fsc_dummy_enc_policy))
  1105				return 0;
  1106			errorfc(fc, "Can't set test_dummy_encryption on remount");
  1107			return -EINVAL;
  1108		}
  1109	
  1110		/* Also make sure fsopt doesn't contain a conflicting value. */
  1111		if (fscrypt_is_dummy_policy_set(&fsc->fsc_dummy_enc_policy)) {
  1112			if (fscrypt_dummy_policies_equal(&fsopt->dummy_enc_policy,
  1113							 &fsc->fsc_dummy_enc_policy))
  1114				return 0;
  1115			errorfc(fc, "Conflicting test_dummy_encryption options");
  1116			return -EINVAL;
  1117		}
  1118	
  1119		fsc->fsc_dummy_enc_policy = fsopt->dummy_enc_policy;
  1120		memset(&fsopt->dummy_enc_policy, 0, sizeof(fsopt->dummy_enc_policy));
  1121	
> 1122		err = fscrypt_add_test_dummy_key(sb, &fsc->fsc_dummy_enc_policy);
  1123		if (err) {
  1124			errorfc(fc, "Error adding test dummy encryption key, %d", err);
  1125			return err;
  1126		}
  1127	
  1128		warnfc(fc, "test_dummy_encryption mode enabled");
  1129		return 0;
  1130	}
  1131	#else
  1132	static int ceph_apply_test_dummy_encryption(struct super_block *sb,
  1133						    struct fs_context *fc,
  1134						    struct ceph_mount_options *fsopt)
  1135	{
  1136		return 0;
  1137	}
  1138	#endif
  1139	

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