From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752221AbdEDHbL (ORCPT ); Thu, 4 May 2017 03:31:11 -0400 Received: from mail-wr0-f194.google.com ([209.85.128.194]:33744 "EHLO mail-wr0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751484AbdEDHbD (ORCPT ); Thu, 4 May 2017 03:31:03 -0400 Subject: Re: DM_INTEGRITY Kconfig help (was: Re: dm: add integrity target) To: Geert Uytterhoeven , Mikulas Patocka , Mike Snitzer References: Cc: Linux Kernel Mailing List , linux-raid@vger.kernel.org From: Milan Broz Message-ID: <6988fc7b-1ab4-4c7a-c7c9-121271ddd970@gmail.com> Date: Thu, 4 May 2017 09:31:00 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/04/2017 08:03 AM, Geert Uytterhoeven wrote: >> +config DM_INTEGRITY >> + tristate "Integrity target" >> + depends on BLK_DEV_DM >> + select BLK_DEV_INTEGRITY >> + select DM_BUFIO >> + select CRYPTO >> + select ASYNC_XOR >> + ---help--- >> + This is the integrity target. > > Which is...? > > Can you please extend the help message for the uneducated? Yes, sorry, this is our oversight. Mike already promised that this text will be extended in the next patchset. For now you can find the description in documentation Documentation/device-mapper/dm-integrity.txt "The dm-integrity target emulates a block device that has additional per-sector tags that can be used for storing integrity information." (The major designed use case is for providing metadata space for tags for authenticated encryption in dm-crypt but it can be used also as a standalone target.) Thanks, Milan