Re: [PATCH v5 1/7] NFSD: Extract revoke_one_stid() utility function

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

Hi Chuck,

kernel test robot noticed the following build errors:

[auto build test ERROR on 65058e9e9b20619f920397f529072e853dd43811]

url:    https://github.com/intel-lab-lkp/linux/commits/Chuck-Lever/NFSD-Extract-revoke_one_stid-utility-function/20260327-081757
base:   65058e9e9b20619f920397f529072e853dd43811
patch link:    https://lore.kernel.org/r/20260326-umount-kills-nfsv4-state-v5-1-d2ce071b3570%40oracle.com
patch subject: [PATCH v5 1/7] NFSD: Extract revoke_one_stid() utility function
config: loongarch-defconfig (https://download.01.org/0day-ci/archive/20260327/202603271905.vZdE0ulk-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260327/202603271905.vZdE0ulk-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/202603271905.vZdE0ulk-lkp@intel.com/

All errors (new ones prefixed by >>):

>> fs/nfsd/nfs4state.c:1830:14: error: use of undeclared identifier 'state_lock'; did you mean 'task_lock'?
    1830 |                 spin_lock(&state_lock);
         |                            ^~~~~~~~~~
         |                            task_lock
   include/linux/sched/task.h:216:20: note: 'task_lock' declared here
     216 | static inline void task_lock(struct task_struct *p)
         |                    ^
   fs/nfsd/nfs4state.c:1833:16: error: use of undeclared identifier 'state_lock'; did you mean 'task_lock'?
    1833 |                 spin_unlock(&state_lock);
         |                              ^~~~~~~~~~
         |                              task_lock
   include/linux/sched/task.h:216:20: note: 'task_lock' declared here
     216 | static inline void task_lock(struct task_struct *p)
         |                    ^
   2 errors generated.


vim +1830 fs/nfsd/nfs4state.c

  1805	
  1806	static void revoke_one_stid(struct nfs4_client *clp, struct nfs4_stid *stid)
  1807	{
  1808		struct nfs4_ol_stateid *stp;
  1809		struct nfs4_delegation *dp;
  1810	
  1811		switch (stid->sc_type) {
  1812		case SC_TYPE_OPEN:
  1813			stp = openlockstateid(stid);
  1814			mutex_lock_nested(&stp->st_mutex, OPEN_STATEID_MUTEX);
  1815			revoke_ol_stid(clp, stp);
  1816			mutex_unlock(&stp->st_mutex);
  1817			break;
  1818		case SC_TYPE_LOCK:
  1819			stp = openlockstateid(stid);
  1820			mutex_lock_nested(&stp->st_mutex, LOCK_STATEID_MUTEX);
  1821			revoke_ol_stid(clp, stp);
  1822			mutex_unlock(&stp->st_mutex);
  1823			break;
  1824		case SC_TYPE_DELEG:
  1825			/*
  1826			 * Extra reference guards against concurrent FREE_STATEID.
  1827			 */
  1828			refcount_inc(&stid->sc_count);
  1829			dp = delegstateid(stid);
> 1830			spin_lock(&state_lock);
  1831			if (!unhash_delegation_locked(dp, SC_STATUS_ADMIN_REVOKED))
  1832				dp = NULL;
  1833			spin_unlock(&state_lock);
  1834			if (dp)
  1835				revoke_delegation(dp);
  1836			else
  1837				nfs4_put_stid(stid);
  1838			break;
  1839		case SC_TYPE_LAYOUT:
  1840			nfsd4_close_layout(layoutstateid(stid));
  1841			break;
  1842		}
  1843	}
  1844	

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