[dhowells-fs:fscache-iter 56/60] include/linux/fscache.h:539: undefined reference to `__fscache_free_io_request'

[dhowells-fs:fscache-iter 56/60] include/linux/fscache.h:539: undefined reference to `__fscache_free_io_request'

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git fscache-iter
head:   757ac8b16a0edd3befa15c9bdcb2ab3811be945d
commit: 83f43dd403cdd2c3b1c774920d02f26e3d9a2d3a [56/60] afs: Use new fscache I/O API
config: microblaze-randconfig-r026-20200723 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 9.3.0
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
        git checkout 83f43dd403cdd2c3b1c774920d02f26e3d9a2d3a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 

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

All errors (new ones prefixed by >>):

   microblaze-linux-ld: fs/fscache/read_helper.o: in function `fscache_write':
   include/linux/fscache.h:637: undefined reference to `__fscache_write'
   microblaze-linux-ld: fs/fscache/read_helper.o: in function `fscache_read':
   include/linux/fscache.h:603: undefined reference to `__fscache_read'
   microblaze-linux-ld: fs/fscache/read_helper.o: in function `queue_work':
   include/linux/workqueue.h:507: undefined reference to `fscache_op_wq'
   microblaze-linux-ld: include/linux/workqueue.h:507: undefined reference to `fscache_op_wq'
   microblaze-linux-ld: fs/fscache/read_helper.o: in function `fscache_shape_request':
   include/linux/fscache.h:572: undefined reference to `__fscache_shape_request'
   microblaze-linux-ld: fs/afs/file.o: in function `fscache_free_io_request':
>> include/linux/fscache.h:539: undefined reference to `__fscache_free_io_request'

vim +539 include/linux/fscache.h

076cf3d60a360f3 David Howells 2020-02-06  530  
076cf3d60a360f3 David Howells 2020-02-06  531  /**
076cf3d60a360f3 David Howells 2020-02-06  532   * fscache_free_io_request - Clean up an I/O request
076cf3d60a360f3 David Howells 2020-02-06  533   * @req: The I/O request to clean
076cf3d60a360f3 David Howells 2020-02-06  534   */
076cf3d60a360f3 David Howells 2020-02-06  535  static inline
076cf3d60a360f3 David Howells 2020-02-06  536  void fscache_free_io_request(struct fscache_io_request *req)
076cf3d60a360f3 David Howells 2020-02-06  537  {
e7242eaae0e94ca David Howells 2020-05-13  538  	if (fscache_cookie_valid(req->cookie))
076cf3d60a360f3 David Howells 2020-02-06 @539  		__fscache_free_io_request(req);
076cf3d60a360f3 David Howells 2020-02-06  540  }
076cf3d60a360f3 David Howells 2020-02-06  541  

:::::: The code at line 539 was first introduced by commit
:::::: 076cf3d60a360f3b1faa84626b1ad93a6db4709f fscache: Rewrite the I/O API based on iov_iter

:::::: TO: David Howells <dhowells@redhat.com>
:::::: CC: David Howells <dhowells@redhat.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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