[jlayton:dir-deleg 26/26] fs/nfsd/nfs4state.c:1054:28: warning: 'nfsd_refstr_from_qstr' defined but not used

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git dir-deleg
head:   4e05ff4e8e6879032361c40f33178eee80d85dfe
commit: 4e05ff4e8e6879032361c40f33178eee80d85dfe [26/26] nfsd: add data structures for handling CB_NOTIFY to directory delegation
config: x86_64-rhel-9.4 (https://download.01.org/0day-ci/archive/20250805/202508051446.wydhCF99-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250805/202508051446.wydhCF99-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/202508051446.wydhCF99-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/nfsd/nfs4state.c:1054:28: warning: 'nfsd_refstr_from_qstr' defined but not used [-Wunused-function]
    1054 | static struct nfsd_refstr *nfsd_refstr_from_qstr(struct qstr *q)
         |                            ^~~~~~~~~~~~~~~~~~~~~


vim +/nfsd_refstr_from_qstr +1054 fs/nfsd/nfs4state.c

  1052	
  1053	
> 1054	static struct nfsd_refstr *nfsd_refstr_from_qstr(struct qstr *q)
  1055	{
  1056		struct nfsd_refstr *nr;
  1057	
  1058		nr = kmalloc(sizeof(*nr) + q->len + 1, GFP_KERNEL);
  1059		if (nr) {
  1060			memcpy(&nr->nr_str, q->name, q->len);
  1061			nr->nr_str[q->len + 1] = '\0';
  1062		}
  1063		return nr;
  1064	}
  1065	

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