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 E99C5C433FE for ; Sun, 12 Dec 2021 21:57:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229760AbhLLV5o convert rfc822-to-8bit (ORCPT ); Sun, 12 Dec 2021 16:57:44 -0500 Received: from lithops.sigma-star.at ([195.201.40.130]:35970 "EHLO lithops.sigma-star.at" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229662AbhLLV5n (ORCPT ); Sun, 12 Dec 2021 16:57:43 -0500 Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 3666E62DA5E9; Sun, 12 Dec 2021 22:57:41 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id C98Zu0q6EXFN; Sun, 12 Dec 2021 22:57:40 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by lithops.sigma-star.at (Postfix) with ESMTP id 61B0362DA5F0; Sun, 12 Dec 2021 22:57:40 +0100 (CET) Received: from lithops.sigma-star.at ([127.0.0.1]) by localhost (lithops.sigma-star.at [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id K6Z7PkXH7Fdd; Sun, 12 Dec 2021 22:57:40 +0100 (CET) Received: from lithops.sigma-star.at (lithops.sigma-star.at [195.201.40.130]) by lithops.sigma-star.at (Postfix) with ESMTP id 404F962DA5E9; Sun, 12 Dec 2021 22:57:40 +0100 (CET) Date: Sun, 12 Dec 2021 22:57:40 +0100 (CET) From: Richard Weinberger To: Trond Myklebust Cc: linux-nfs , linux-kernel , anna schumaker , david Message-ID: <1388843712.160520.1639346260184.JavaMail.zimbra@nod.at> In-Reply-To: <7a8d59679ed2ab948b8b694eb1df94e3a90fcc8a.camel@hammerspace.com> References: <20211212210044.16238-1-richard@nod.at> <1812588409.160456.1639344774221.JavaMail.zimbra@nod.at> <7a8d59679ed2ab948b8b694eb1df94e3a90fcc8a.camel@hammerspace.com> Subject: Re: [RFC PATCH] NFS: Save 4 bytes when re-exporting MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT X-Originating-IP: [195.201.40.130] X-Mailer: Zimbra 8.8.12_GA_3807 (ZimbraWebClient - FF94 (Linux)/8.8.12_GA_3809) Thread-Topic: Save 4 bytes when re-exporting Thread-Index: AQHX75ta92YY4WU8k06yTBIDlSm7OawvXNEA1wwF3iuo9AOGgGEBWxOo Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org ----- Ursprüngliche Mail ----- > Von: "Trond Myklebust" >> What do you think? >> > > You don't a priori know the length of the underlying filehandle or its > structure. All you know is that you have n bytes of data, and it is > possible that the first 2 bytes represent the size 'n-2'. However it is > also possible that those 2 bytes are something else that just happens > to match the value 'n-2'. Yes. ;-\ Our mails have crossed, after hitting send I realized my fault. Thanks, //richard