Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758226AbaDBI7E (ORCPT ); Wed, 2 Apr 2014 04:59:04 -0400 Received: from cn.fujitsu.com ([59.151.112.132]:51203 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1758054AbaDBI7B (ORCPT ); Wed, 2 Apr 2014 04:59:01 -0400 X-IronPort-AV: E=Sophos;i="4.97,778,1389715200"; d="scan'208";a="28776747" From: Gui Hecheng To: CC: , <1i5t5.duncan@cox.net>, Gui Hecheng Subject: [PATCH v3] lib: add size unit t/p/e to memparse Date: Wed, 2 Apr 2014 16:54:37 +0800 Message-ID: <1396428877-24089-1-git-send-email-guihc.fnst@cn.fujitsu.com> X-Mailer: git-send-email 1.8.1.4 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.167.226.111] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- changelog v1->v2: replace kilobyte with kibibyte, and others v2->v3: add missing unit "bytes" in comment --- lib/cmdline.c | 25 ++++++++++++++++++++----- 1 file changed, 20 insertions(+), 5 deletions(-) diff --git a/lib/cmdline.c b/lib/cmdline.c index eb67911..511b9be 100644 --- a/lib/cmdline.c +++ b/lib/cmdline.c @@ -119,11 +119,17 @@ char *get_options(const char *str, int nints, int *ints) * @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 (for kibibytes, or 1024 bytes), + * %M (for mebibytes, or 1048576 bytes), + * %G (for gibibytes, or 1073741824 bytes), + * %T (for tebibytes, or 1099511627776 bytes), + * %P (for pebibytes, or 1125899906842624 bytes), + * %E (for exbibytes, or 1152921504606846976 bytes). + * If the number is suffixed with K, M, G, T, P, E, then + * the return value is the number multiplied by one kibibyte, one + * mebibyte, one gibibyte, one tebibyte, one pebibyte, one exbibyte, + * respectively. */ unsigned long long memparse(const char *ptr, char **retptr) @@ -133,6 +139,15 @@ 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; -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/