switch follow_down()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 9cd5a717b..d870ae2 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -78,7 +78,7 @@
 extern struct dentry *lookup_one_len(const char *, struct dentry *, int);
 extern struct dentry *lookup_one_noperm(const char *, struct dentry *);
 
-extern int follow_down(struct vfsmount **, struct dentry **);
+extern int follow_down(struct path *);
 extern int follow_up(struct path *);
 
 extern struct dentry *lock_rename(struct dentry *, struct dentry *);