[snitzer:nfs-localio-for-next 4/9] include/linux/nfslocalio.h:76: undefined reference to `nfs_to'

[snitzer:nfs-localio-for-next 4/9] include/linux/nfslocalio.h:76: undefined reference to `nfs_to'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/snitzer/linux.git nfs-localio-for-next
head:   5262b13197d631495e9a581d56b781d8f684f70f
commit: a1e7c508e48a2e4d269fb94f89e0282add3a6cdf [4/9] nfs_common: fix race in NFS calls to nfsd_file_put_local() and nfsd_serv_put()
config: x86_64-randconfig-002-20241002 (https://download.01.org/0day-ci/archive/20241003/202410031944.hMCFY9BO-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241003/202410031944.hMCFY9BO-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/202410031944.hMCFY9BO-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: fs/nfs/localio.o: in function `nfs_local_iocb_alloc':
   fs/nfs/localio.c:290: undefined reference to `nfs_to'
   ld: fs/nfs/localio.c:290: undefined reference to `nfs_to'
   ld: fs/nfs/localio.c:290: undefined reference to `nfs_to'
   ld: fs/nfs/localio.o: in function `nfs_to_nfsd_file_put_local':
>> include/linux/nfslocalio.h:76: undefined reference to `nfs_to'
>> ld: include/linux/nfslocalio.h:76: undefined reference to `nfs_to'
   ld: fs/nfs/localio.o:include/linux/nfslocalio.h:76: more undefined references to `nfs_to' follow
   ld: fs/nfs/localio.o: in function `nfs_local_disable':
   fs/nfs/localio.c:140: undefined reference to `nfs_uuid_invalidate_one_client'
   ld: fs/nfs/localio.o: in function `nfs_local_probe':
   fs/nfs/localio.c:209: undefined reference to `nfs_uuid_begin'
   ld: fs/nfs/localio.c:212: undefined reference to `nfs_uuid_end'
   ld: fs/nfs/localio.o: in function `nfs_local_open_fh':
   fs/nfs/localio.c:233: undefined reference to `nfs_open_local_fh'
   ld: fs/nfs/localio.o: in function `nfs_local_doio':
   fs/nfs/localio.c:600: undefined reference to `nfs_to'
   ld: fs/nfs/localio.c:600: undefined reference to `nfs_to'
   ld: fs/nfs/localio.o: in function `nfs_to_nfsd_file_put_local':
>> include/linux/nfslocalio.h:76: undefined reference to `nfs_to'
>> ld: include/linux/nfslocalio.h:76: undefined reference to `nfs_to'
>> ld: include/linux/nfslocalio.h:76: undefined reference to `nfs_to'
   ld: fs/nfs/localio.o:include/linux/nfslocalio.h:76: more undefined references to `nfs_to' follow


vim +76 include/linux/nfslocalio.h

    63	
    64	struct nfsd_file *nfs_open_local_fh(nfs_uuid_t *,
    65			   struct rpc_clnt *, const struct cred *,
    66			   const struct nfs_fh *, const fmode_t);
    67	
    68	static inline void nfs_to_nfsd_file_put_local(struct nfsd_file *localio)
    69	{
    70		/*
    71		 * Once reference to nfsd_serv is dropped, NFSD could be
    72		 * unloaded, so ensure safe return from nfsd_file_put_local()
    73		 * by always taking RCU.
    74		 */
    75		rcu_read_lock();
  > 76		nfs_to->nfsd_file_put_local(localio);
    77		rcu_read_unlock();
    78	}
    79	

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