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 X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2285ECDFB3 for ; Mon, 16 Jul 2018 16:55:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A6E622084E for ; Mon, 16 Jul 2018 16:55:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A6E622084E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728522AbeGPRXg (ORCPT ); Mon, 16 Jul 2018 13:23:36 -0400 Received: from mx2.suse.de ([195.135.220.15]:54262 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727618AbeGPRXg (ORCPT ); Mon, 16 Jul 2018 13:23:36 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id CFD4DAF4E; Mon, 16 Jul 2018 16:55:18 +0000 (UTC) From: Coly Li To: linux-kernel@vger.kernel.org Cc: linux-bcache@vger.kernel.org, linux-block@vger.kernel.org, Coly Li , Andy Shevchenko , Greg Kroah-Hartman , "Luis R . Rodriguez" , Linus Torvalds , Thomas Gleixner , Michael Lyle , Kent Overstreet , Kate Stewart Subject: [PATCH 0/4] add crc64 calculation as kernel library Date: Tue, 17 Jul 2018 00:55:03 +0800 Message-Id: <20180716165507.23100-1-colyli@suse.de> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch set adds basic implementation of crc64 calculation as Linux kernel library. Since bcache already does crc64 by itself, this patch set also modifies bcache code to use the new crc64 library routine. bcache uses crc64 as storage checksum, if a change of crc lib routines results an inconsistent result, the unmatched checksum may make bcache 'think' the on-disk is corrupted, such change should be avoided or detected as early as possible. Therefore the last patch in this series adds a crc test framework, to check consistency of different calculations. Coly Li Cc: Andy Shevchenko Cc: Greg Kroah-Hartman Cc: Luis R. Rodriguez Cc: Linus Torvalds Cc: Thomas Gleixner Cc: Michael Lyle Cc: Kent Overstreet Cc: Kate Stewart --- Andy Shevchenko (1): lib/crc64: add crc64 option to lib/Kconfig Coly Li (3): lib: add crc64 calculation routines bcache: use routines from lib/crc64.c for CRC64 calculation lib/test_crc: Add test cases for crc calculation drivers/md/bcache/bcache.h | 7 +- drivers/md/bcache/btree.c | 2 +- drivers/md/bcache/request.c | 2 +- drivers/md/bcache/super.c | 5 +- drivers/md/bcache/util.c | 131 ---------------------------------- drivers/md/bcache/util.h | 5 +- include/linux/crc64.h | 15 ++++ lib/.gitignore | 2 + lib/Kconfig | 8 +++ lib/Kconfig.debug | 11 +++ lib/Makefile | 12 ++++ lib/crc64.c | 71 +++++++++++++++++++ lib/gen_crc64table.c | 76 ++++++++++++++++++++ lib/test_crc.c | 136 ++++++++++++++++++++++++++++++++++++ 14 files changed, 341 insertions(+), 142 deletions(-) create mode 100644 include/linux/crc64.h create mode 100644 lib/crc64.c create mode 100644 lib/gen_crc64table.c create mode 100644 lib/test_crc.c -- 2.17.1