From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7AE0BC19F2D for ; Thu, 11 Aug 2022 10:21:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233535AbiHKKVV (ORCPT ); Thu, 11 Aug 2022 06:21:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229591AbiHKKVU (ORCPT ); Thu, 11 Aug 2022 06:21:20 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9B52B255B3 for ; Thu, 11 Aug 2022 03:21:18 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 402D4B81F8B for ; Thu, 11 Aug 2022 10:21:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6D05BC433D7; Thu, 11 Aug 2022 10:21:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660213275; bh=dUeODZ4qKtU3x4fpEIi6wefgjQfaZd2WH2diVhwRxz0=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=NYTfaZciqRzMV9TiGezxDTypo7VVppQBfe0z8MjuqWHzfBIzq4MkSJ1kxzRoZWYgn hg0IZISQVDGKKodvcFhAevPgHG5o7v5nexPzuJnTrvXuhdGVPTsd1c8Uxa5WvFkIn3 CxcQCmLUZaa5IJLqnV+8a8gAHD4qcHKCgr03wGZ8= Date: Thu, 11 Aug 2022 12:21:12 +0200 From: Greg KH To: Alexander Grund Cc: stable@vger.kernel.org Subject: Re: [PATCH 4.9 0/1] selinux: drop super_block backpointer from superblock_security_struct Message-ID: References: <20220808115922.331003-1-theflamefire89@gmail.com> <7769a909-9054-3215-dd3e-00bfb822d003@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7769a909-9054-3215-dd3e-00bfb822d003@gmail.com> Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Thu, Aug 11, 2022 at 11:46:09AM +0200, Alexander Grund wrote: > On 08.08.22 15:28, Greg KH wrote: > > But, we only take patches that actually do something. This one doesn't > > do anything at all, and has no measurable performance or bugfix that I > > can determine at all. > > Isn't "doing less" also worth the patch? > I mean this patch removes a superflous pointer of the superblock struct > making the kernel use less memory. Also, how much measurable memory does this save? You did not quantify it.