nfs: remove the second argument of k[un]map_atomic()

Signed-off-by: Cong Wang <amwang@redhat.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index ec9f6ef..caf92d0 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -193,7 +193,7 @@
 	 * when talking to the server, we always send cookie 0
 	 * instead of 1 or 2.
 	 */
-	start = p = kmap_atomic(*readdir->pages, KM_USER0);
+	start = p = kmap_atomic(*readdir->pages);
 	
 	if (cookie == 0) {
 		*p++ = xdr_one;                                  /* next */
@@ -221,7 +221,7 @@
 
 	readdir->pgbase = (char *)p - (char *)start;
 	readdir->count -= readdir->pgbase;
-	kunmap_atomic(start, KM_USER0);
+	kunmap_atomic(start);
 }
 
 static int nfs4_wait_clnt_recover(struct nfs_client *clp)