From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754390AbbJZNz0 (ORCPT ); Mon, 26 Oct 2015 09:55:26 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52242 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754262AbbJZNzX (ORCPT ); Mon, 26 Oct 2015 09:55:23 -0400 From: Vitaly Kuznetsov To: Andrew Morton Cc: Rasmus Villemoes , Andy Shevchenko , Ulf Hansson , James Bottomley , Kees Cook , linux-kernel@vger.kernel.org Subject: [PATCH 0/3] lib/string_helpers: fix precision issues and introduce tests Date: Mon, 26 Oct 2015 14:55:17 +0100 Message-Id: <1445867720-25473-1-git-send-email-vkuznets@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linux always lies about your storage size when it has 4k sectors and its size is big enough. E.g. a device with 8192 4k sectors will be reported as "32.7 MB/32 MiB" while "33.5 MB/32 MiB" is expected. This series is supposed to fix the issue by fixing calculation precision in string_get_size() for all possible inputs. PATCH 1/3 is a preparatory change, PATCH 2/3 re-factors string_get_size() fixing the issue, PATCH 3/3 introduces tests for string_get_size(). PATCH 3/3 was previously sent as part of "lib/string_helpers.c: fix infinite loop in string_get_size()" series but afaics wasn't merged. In this submission I add additional tests to it. Vitaly Kuznetsov (3): lib/string_helpers: change blk_size to u32 for string_get_size() interface lib/string_helpers.c: don't lose precision in string_get_size() lib/test-string_helpers.c: add string_get_size() tests include/linux/string_helpers.h | 2 +- lib/string_helpers.c | 48 +++++++++++++++++++++++------------------- lib/test-string_helpers.c | 44 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 71 insertions(+), 23 deletions(-) -- 2.4.3