NFS: Fix some 'sparse' warnings...

 - fs/nfs/dir.c:610:8: warning: symbol 'nfs_llseek_dir' was not declared.
   Should it be static?
 - fs/nfs/dir.c:636:5: warning: symbol 'nfs_fsync_dir' was not declared.
   Should it be static?
 - fs/nfs/write.c:925:19: warning: symbol 'req' shadows an earlier one
 - fs/nfs/write.c:61:6: warning: symbol 'nfs_commit_rcu_free' was not
   declared. Should it be static?
 - fs/nfs/nfs4proc.c:793:5: warning: symbol 'nfs4_recover_expired_lease'
   was not declared. Should it be static?
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/delegation.c

@@ -226,7 +226,7 @@ restart:
 	spin_unlock(&clp->cl_lock);
 }
 
-int nfs_do_expire_all_delegations(void *ptr)
+static int nfs_do_expire_all_delegations(void *ptr)
 {
 	struct nfs_client *clp = ptr;
 	struct nfs_delegation *delegation;

fs/nfs/dir.c

@@ -607,7 +607,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
 	return res;
 }
 
-loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
+static loff_t nfs_llseek_dir(struct file *filp, loff_t offset, int origin)
 {
 	mutex_lock(&filp->f_path.dentry->d_inode->i_mutex);
 	switch (origin) {
@@ -633,7 +633,7 @@ out:
  * All directory operations under NFS are synchronous, so fsync()
  * is a dummy operation.
  */
-int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
+static int nfs_fsync_dir(struct file *filp, struct dentry *dentry, int datasync)
 {
 	dfprintk(VFS, "NFS: fsync_dir(%s/%s) datasync %d\n",
 			dentry->d_parent->d_name.name, dentry->d_name.name,

fs/nfs/nfs4proc.c

@@ -790,7 +790,7 @@ out:
 	return -EACCES;
 }
 
-int nfs4_recover_expired_lease(struct nfs_server *server)
+static int nfs4_recover_expired_lease(struct nfs_server *server)
 {
 	struct nfs_client *clp = server->nfs_client;
 	int ret;
@@ -2748,7 +2748,7 @@ static int nfs4_delay(struct rpc_clnt *clnt, long *timeout)
 /* This is the error handling routine for processes that are allowed
  * to sleep.
  */
-int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
+static int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct nfs4_exception *exception)
 {
 	struct nfs_client *clp = server->nfs_client;
 	int ret = errorcode;

fs/nfs/nfs4state.c

@@ -104,7 +104,7 @@ struct rpc_cred *nfs4_get_renew_cred(struct nfs_client *clp)
 	return cred;
 }
 
-struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp)
+static struct rpc_cred *nfs4_get_setclientid_cred(struct nfs_client *clp)
 {
 	struct nfs4_state_owner *sp;
 

fs/nfs/write.c

@@ -58,7 +58,7 @@ struct nfs_write_data *nfs_commit_alloc(void)
 	return p;
 }
 
-void nfs_commit_rcu_free(struct rcu_head *head)
+static void nfs_commit_rcu_free(struct rcu_head *head)
 {
 	struct nfs_write_data *p = container_of(head, struct nfs_write_data, task.u.tk_rcu);
 	if (p && (p->pagevec != &p->page_array[0]))
@@ -922,7 +922,7 @@ static int nfs_flush_one(struct inode *inode, struct list_head *head, unsigned i
 	return 0;
  out_bad:
 	while (!list_empty(head)) {
-		struct nfs_page *req = nfs_list_entry(head->next);
+		req = nfs_list_entry(head->next);
 		nfs_list_remove_request(req);
 		nfs_redirty_request(req);
 		nfs_end_page_writeback(req->wb_page);