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=-9.5 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,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 3BEEAC2D0DA for ; Wed, 25 Dec 2019 08:34:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1851D2072A for ; Wed, 25 Dec 2019 08:34:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726473AbfLYIei (ORCPT ); Wed, 25 Dec 2019 03:34:38 -0500 Received: from out30-132.freemail.mail.aliyun.com ([115.124.30.132]:54412 "EHLO out30-132.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726196AbfLYIeh (ORCPT ); Wed, 25 Dec 2019 03:34:37 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R361e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e07486;MF=teawaterz@linux.alibaba.com;NM=1;PH=DS;RN=4;SR=0;TI=SMTPD_---0TltSXMn_1577262870; Received: from localhost(mailfrom:teawaterz@linux.alibaba.com fp:SMTPD_---0TltSXMn_1577262870) by smtp.aliyun-inc.com(127.0.0.1); Wed, 25 Dec 2019 16:34:35 +0800 From: Hui Zhu To: fengguang.wu@intel.com, linux-kernel@vger.kernel.org Cc: Hui Zhu , Hui Zhu Subject: [PATCH for vm-scalability] usemem: Fix the build warning Date: Wed, 25 Dec 2019 16:34:25 +0800 Message-Id: <1577262865-10253-1-git-send-email-teawater@gmail.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Got: gcc -O -c -Wall -g usemem.c -o usemem.o usemem.c: In function ‘output_statistics’: usemem.c:638:2: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result [-Wunused-result] write(1, buf, len); This commit fixes this warning. Signed-off-by: Hui Zhu --- usemem.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/usemem.c b/usemem.c index 85dbdc5..9158304 100644 --- a/usemem.c +++ b/usemem.c @@ -635,7 +635,8 @@ static void output_statistics(unsigned long unit_bytes, const char *intro) "%s%lu bytes / %lu usecs = %lu KB/s\n", intro, unit_bytes, delta_us, throughput); fflush(stdout); - write(1, buf, len); + if (write(1, buf, len) != len) + printf("Output buf \"%s\" fail\n", buf); } static void timing_free(void *ptrs[], unsigned int nptr, -- 2.7.4