vfs: switch ->show_stats to struct dentry *

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 5bb961c..0cb89dc 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -488,7 +488,7 @@
 }
 
 #ifdef CONFIG_CIFS_STATS2
-static int cifs_show_stats(struct seq_file *s, struct vfsmount *mnt)
+static int cifs_show_stats(struct seq_file *s, struct dentry *root)
 {
 	/* BB FIXME */
 	return 0;