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

it's always false now
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/namei.c

@@ -1065,7 +1065,7 @@ static int follow_dotdot_rcu(struct nameidata *nd)
  * 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 @@ int follow_down(struct path *path, bool mounting_here)
 			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;
 		}

fs/nfsd/vfs.c

@@ -87,7 +87,7 @@ nfsd_cross_mnt(struct svc_rqst *rqstp, struct dentry **dpp,
 			    .dentry = dget(dentry)};
 	int err = 0;
 
-	err = follow_down(&path, false);
+	err = follow_down(&path);
 	if (err < 0)
 		goto out;
 

include/linux/namei.h

@@ -85,7 +85,7 @@ extern struct file *lookup_instantiate_filp(struct nameidata *nd, struct dentry
 extern struct dentry *lookup_one_len(const char *, struct dentry *, int);
 
 extern int follow_down_one(struct path *);
-extern int follow_down(struct path *, bool);
+extern int follow_down(struct path *);
 extern int follow_up(struct path *);
 
 extern struct dentry *lock_rename(struct dentry *, struct dentry *);