NFS: fix print format for tk_pid

The tk_pid field is an unsigned short.  The proper print format specifier for
that type is %5u, not %4d.

Also clean up some miscellaneous print formatting nits.

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

fs/nfs/read.c

@@ -183,7 +183,7 @@ static void nfs_read_rpcsetup(struct nfs_page *req, struct nfs_read_data *data,
 
 	data->task.tk_cookie = (unsigned long)inode;
 
-	dprintk("NFS: %4d initiated read call (req %s/%Ld, %u bytes @ offset %Lu)\n",
+	dprintk("NFS: %5u initiated read call (req %s/%Ld, %u bytes @ offset %Lu)\n",
 			data->task.tk_pid,
 			inode->i_sb->s_id,
 			(long long)NFS_FILEID(inode),
@@ -357,7 +357,7 @@ int nfs_readpage_result(struct rpc_task *task, struct nfs_read_data *data)
 {
 	int status;
 
-	dprintk("%s: %4d, (status %d)\n", __FUNCTION__, task->tk_pid,
+	dprintk("NFS: %s: %5u, (status %d)\n", __FUNCTION__, task->tk_pid,
 			task->tk_status);
 
 	status = NFS_PROTO(data->inode)->read_done(task, data);