NFSD: Rename boot verifier functions

Clean up: These functions handle what the specs call a write
verifier, which in the Linux NFS server implementation is now
divorced from the server's boot instance

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

Author: chucklever

fs/nfsd/filecache.c

@@ -243,7 +243,7 @@ nfsd_file_do_unhash(struct nfsd_file *nf)
 	trace_nfsd_file_unhash(nf);
 
 	if (nfsd_file_check_write_error(nf))
-		nfsd_reset_boot_verifier(net_generic(nf->nf_net, nfsd_net_id));
+		nfsd_reset_write_verifier(net_generic(nf->nf_net, nfsd_net_id));
 	--nfsd_file_hashtbl[nf->nf_hashval].nfb_count;
 	hlist_del_rcu(&nf->nf_node);
 	atomic_long_dec(&nfsd_filecache_count);

fs/nfsd/netns.h

@@ -198,6 +198,6 @@ extern void nfsd_netns_free_versions(struct nfsd_net *nn);
 
 extern unsigned int nfsd_net_id;
 
-void nfsd_copy_boot_verifier(__be32 verf[2], struct nfsd_net *nn);
-void nfsd_reset_boot_verifier(struct nfsd_net *nn);
+void nfsd_copy_write_verifier(__be32 verf[2], struct nfsd_net *nn);
+void nfsd_reset_write_verifier(struct nfsd_net *nn);
 #endif /* __NFSD_NETNS_H__ */

fs/nfsd/nfs4proc.c

@@ -598,7 +598,7 @@ static void gen_boot_verifier(nfs4_verifier *verifier, struct net *net)
 
 	BUILD_BUG_ON(2*sizeof(*verf) != sizeof(verifier->data));
 
-	nfsd_copy_boot_verifier(verf, net_generic(net, nfsd_net_id));
+	nfsd_copy_write_verifier(verf, net_generic(net, nfsd_net_id));
 }
 
 static __be32

fs/nfsd/nfssvc.c

@@ -346,14 +346,14 @@ static bool nfsd_needs_lockd(struct nfsd_net *nn)
 }
 
 /**
- * nfsd_copy_boot_verifier - Atomically copy a write verifier
+ * nfsd_copy_write_verifier - Atomically copy a write verifier
  * @verf: buffer in which to receive the verifier cookie
  * @nn: NFS net namespace
  *
  * This function provides a wait-free mechanism for copying the
- * namespace's boot verifier without tearing it.
+ * namespace's write verifier without tearing it.
  */
-void nfsd_copy_boot_verifier(__be32 verf[2], struct nfsd_net *nn)
+void nfsd_copy_write_verifier(__be32 verf[2], struct nfsd_net *nn)
 {
 	int seq = 0;
 
@@ -364,7 +364,7 @@ void nfsd_copy_boot_verifier(__be32 verf[2], struct nfsd_net *nn)
 	done_seqretry(&nn->writeverf_lock, seq);
 }
 
-static void nfsd_reset_boot_verifier_locked(struct nfsd_net *nn)
+static void nfsd_reset_write_verifier_locked(struct nfsd_net *nn)
 {
 	struct timespec64 now;
 	u64 verf;
@@ -379,7 +379,7 @@ static void nfsd_reset_boot_verifier_locked(struct nfsd_net *nn)
 }
 
 /**
- * nfsd_reset_boot_verifier - Generate a new boot verifier
+ * nfsd_reset_write_verifier - Generate a new write verifier
  * @nn: NFS net namespace
  *
  * This function updates the ->writeverf field of @nn. This field
@@ -391,10 +391,10 @@ static void nfsd_reset_boot_verifier_locked(struct nfsd_net *nn)
  * server and MUST be unique between instances of the NFSv4.1
  * server."
  */
-void nfsd_reset_boot_verifier(struct nfsd_net *nn)
+void nfsd_reset_write_verifier(struct nfsd_net *nn)
 {
 	write_seqlock(&nn->writeverf_lock);
-	nfsd_reset_boot_verifier_locked(nn);
+	nfsd_reset_write_verifier_locked(nn);
 	write_sequnlock(&nn->writeverf_lock);
 }
 
@@ -683,7 +683,7 @@ int nfsd_create_serv(struct net *net)
 		register_inet6addr_notifier(&nfsd_inet6addr_notifier);
 #endif
 	}
-	nfsd_reset_boot_verifier(nn);
+	nfsd_reset_write_verifier(nn);
 	return 0;
 }
 

fs/nfsd/vfs.c

@@ -559,8 +559,8 @@ __be32 nfsd4_clone_file_range(struct svc_rqst *rqstp,
 					&nfsd4_get_cstate(rqstp)->current_fh,
 					dst_pos,
 					count, status);
-			nfsd_reset_boot_verifier(net_generic(nf_dst->nf_net,
-						 nfsd_net_id));
+			nfsd_reset_write_verifier(net_generic(nf_dst->nf_net,
+						  nfsd_net_id));
 			ret = nfserrno(status);
 		}
 	}
@@ -1013,10 +1013,10 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_file *nf,
 	iov_iter_kvec(&iter, WRITE, vec, vlen, *cnt);
 	since = READ_ONCE(file->f_wb_err);
 	if (verf)
-		nfsd_copy_boot_verifier(verf, nn);
+		nfsd_copy_write_verifier(verf, nn);
 	host_err = vfs_iter_write(file, &iter, &pos, flags);
 	if (host_err < 0) {
-		nfsd_reset_boot_verifier(nn);
+		nfsd_reset_write_verifier(nn);
 		goto out_nfserr;
 	}
 	*cnt = host_err;
@@ -1029,7 +1029,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_file *nf,
 	if (stable && use_wgather) {
 		host_err = wait_for_concurrent_writes(file);
 		if (host_err < 0)
-			nfsd_reset_boot_verifier(nn);
+			nfsd_reset_write_verifier(nn);
 	}
 
 out_nfserr:
@@ -1142,19 +1142,19 @@ nfsd_commit(struct svc_rqst *rqstp, struct svc_fh *fhp,
 		err2 = vfs_fsync_range(nf->nf_file, offset, end, 0);
 		switch (err2) {
 		case 0:
-			nfsd_copy_boot_verifier(verf, nn);
+			nfsd_copy_write_verifier(verf, nn);
 			err2 = filemap_check_wb_err(nf->nf_file->f_mapping,
 						    since);
 			break;
 		case -EINVAL:
 			err = nfserr_notsupp;
 			break;
 		default:
-			nfsd_reset_boot_verifier(nn);
+			nfsd_reset_write_verifier(nn);
 		}
 		err = nfserrno(err2);
 	} else
-		nfsd_copy_boot_verifier(verf, nn);
+		nfsd_copy_write_verifier(verf, nn);
 
 	nfsd_file_put(nf);
 out: