don't pass 'mounting_here' flag to follow_down()

it's always false now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/namei.c b/fs/namei.c
index b912b7a..e092648 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -1065,7 +1065,7 @@
  * Care must be taken as namespace_sem may be held (indicated by mounting_here
  * being true).
  */
-int follow_down(struct path *path, bool mounting_here)
+int follow_down(struct path *path)
 {
 	unsigned managed;
 	int ret;
@@ -1086,7 +1086,7 @@
 			BUG_ON(!path->dentry->d_op);
 			BUG_ON(!path->dentry->d_op->d_manage);
 			ret = path->dentry->d_op->d_manage(
-				path->dentry, mounting_here, false);
+				path->dentry, false, false);
 			if (ret < 0)
 				return ret == -EISDIR ? 0 : ret;
 		}