From patchwork Fri Jun 13 01:42:26 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gui Hecheng X-Patchwork-Id: 4346481 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 42CB09F357 for ; Fri, 13 Jun 2014 01:47:56 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 66FA920220 for ; Fri, 13 Jun 2014 01:47:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9121F20219 for ; Fri, 13 Jun 2014 01:47:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751349AbaFMBrj (ORCPT ); Thu, 12 Jun 2014 21:47:39 -0400 Received: from cn.fujitsu.com ([59.151.112.132]:20594 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1751078AbaFMBri (ORCPT ); Thu, 12 Jun 2014 21:47:38 -0400 X-IronPort-AV: E=Sophos;i="5.00,699,1396972800"; d="scan'208";a="31839707" Received: from localhost (HELO edo.cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 13 Jun 2014 09:44:58 +0800 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (localhost.localdomain [127.0.0.1]) by edo.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id s5D1laEd018776; Fri, 13 Jun 2014 09:47:36 +0800 Received: from localhost.localdomain (10.167.226.111) by G08CNEXCHPEKD01.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.181.6; Fri, 13 Jun 2014 09:47:36 +0800 From: Gui Hecheng To: CC: , , Gui Hecheng Subject: [PATCH v4] lib: add size unit t/p/e to memparse Date: Fri, 13 Jun 2014 09:42:26 +0800 Message-ID: <1402623746-1171-1-git-send-email-guihc.fnst@cn.fujitsu.com> X-Mailer: git-send-email 1.8.1.4 MIME-Version: 1.0 X-Originating-IP: [10.167.226.111] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP For modern filesystems such as btrfs, t/p/e size level operations are common. add size unit t/p/e parsing to memparse Signed-off-by: Gui Hecheng Acked-by: David Rientjes Reviewed-by: Satoru Takeuchi --- changelog v1->v2: replace kilobyte with kibibyte, and others v2->v3: add missing unit "bytes" in comment v3->v4: remove idiotic name for K,M,G,P,T,E --- lib/cmdline.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/lib/cmdline.c b/lib/cmdline.c index d4932f7..76a712e 100644 --- a/lib/cmdline.c +++ b/lib/cmdline.c @@ -121,11 +121,7 @@ EXPORT_SYMBOL(get_options); * @retptr: (output) Optional pointer to next char after parse completes * * Parses a string into a number. The number stored at @ptr is - * potentially suffixed with %K (for kilobytes, or 1024 bytes), - * %M (for megabytes, or 1048576 bytes), or %G (for gigabytes, or - * 1073741824). If the number is suffixed with K, M, or G, then - * the return value is the number multiplied by one kilobyte, one - * megabyte, or one gigabyte, respectively. + * potentially suffixed with K, M, G, T, P, E. */ unsigned long long memparse(const char *ptr, char **retptr) @@ -135,6 +131,15 @@ unsigned long long memparse(const char *ptr, char **retptr) unsigned long long ret = simple_strtoull(ptr, &endptr, 0); switch (*endptr) { + case 'E': + case 'e': + ret <<= 10; + case 'P': + case 'p': + ret <<= 10; + case 'T': + case 't': + ret <<= 10; case 'G': case 'g': ret <<= 10;