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=-8.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable 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 D09ADC3A5A5 for ; Tue, 3 Sep 2019 03:30:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A798A207E0 for ; Tue, 3 Sep 2019 03:30:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="i9zMLnEn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726406AbfICDa0 (ORCPT ); Mon, 2 Sep 2019 23:30:26 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:43613 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725848AbfICDaY (ORCPT ); Mon, 2 Sep 2019 23:30:24 -0400 Received: by mail-pf1-f193.google.com with SMTP id d15so380860pfo.10; Mon, 02 Sep 2019 20:30:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :content-transfer-encoding:user-agent; bh=qLqPgNPPOtAuqly/y/WrIiw3//xdfCK2UaIc05HwaDc=; b=i9zMLnEndimQEPM23G3jZaulRBWHxJMHfHVyLq3l+6EK7LTME1+lgichvWRKS4c+Bx XisUTod0mLsoEzFl5kHiXekdasvsKpWIeEyLaXCnO4HLWITBfavtVB8A/BeHqGgjlL0z Fl2y0TAlmtIFP0GuMm60GwcepRgOzVr4qwUZOT6+NVw8evZmP93AlCxNmc34P3aRQd+g mv2v4rF7iz+mFe57PygbK7olDzYGBz4aPKWPnYIlsazIh02bmSQZQbu6hYR+Bbli/AH/ s9nijMNOSvZPmA+Cc69q9JQMfdlg2qKEndhgLu85FuuuGkUbKUD54ATMw9/MCCuap7ev JSJQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-disposition:content-transfer-encoding:user-agent; bh=qLqPgNPPOtAuqly/y/WrIiw3//xdfCK2UaIc05HwaDc=; b=ndDkP2sd2Bt29gXqmMzfpaTCbveNdEu+X1rEtNcYdwGLNiHN1gLjV+rFQg3cLoJ2up MkSDIL0sf6wmt102TQZIrjoAnE8QHQr+jyWMPD9VVBs74I2BlowlKoABYR5UjgaoSWg/ AvKah82CtD1SBq1Acp9DMO3ukXIJbw8T5ZRvjBCqXal1DncwpRpvAa46UXXEvblLKpgh pYpe7r1sd7DZfuHEZGbAidQfDOYlhR1H769QEHPieKS5MNAaBF1fy2Xee4vjDdjIQaRl 8TorpPWRsE7Xq/bD4KPOq/NcRMICeosuvRCaWFuqfD/6xJH+i8/aAJoDjHIKFftldF4P LRuQ== X-Gm-Message-State: APjAAAUoWqidT9zrYeP2wG/0CsYVDyQTCuJVFQJqf7FXl0fj+146J1Io YWpF8S3AGXkBDcvyO1yGH9Y= X-Google-Smtp-Source: APXvYqxsLgSdmhCiUYEXvMIOSWHbXYJGJ1fy+gfGMw3fPBeAYf2G2r9dHLJ2wFbBeajOcDDx7/Bb2g== X-Received: by 2002:a63:6d8d:: with SMTP id i135mr27826429pgc.303.1567481424024; Mon, 02 Sep 2019 20:30:24 -0700 (PDT) Received: from LGEARND20B15 ([27.122.242.75]) by smtp.gmail.com with ESMTPSA id l123sm21092519pfl.9.2019.09.02.20.30.21 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 02 Sep 2019 20:30:23 -0700 (PDT) Date: Tue, 3 Sep 2019 12:30:19 +0900 From: Austin Kim To: clm@fb.com, josef@toxicpanda.com, dsterba@suse.com Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, austindh.kim@gmail.com Subject: [PATCH] btrfs: fix Wmaybe-uninitialized warning Message-ID: <20190903033019.GA149622@LGEARND20B15> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org gcc throws warning message as below: ‘clone_src_i_size’ may be used uninitialized in this function [-Wmaybe-uninitialized] #define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0) ^ fs/btrfs/send.c:5088:6: note: ‘clone_src_i_size’ was declared here u64 clone_src_i_size; ^ The clone_src_i_size is only used as call-by-reference in a call to get_inode_info(). Silence the warning by initializing clone_src_i_size to 0. Signed-off-by: Austin Kim --- fs/btrfs/send.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c index f856d6c..197536b 100644 --- a/fs/btrfs/send.c +++ b/fs/btrfs/send.c @@ -5085,7 +5085,7 @@ static int clone_range(struct send_ctx *sctx, struct btrfs_path *path; struct btrfs_key key; int ret; - u64 clone_src_i_size; + u64 clone_src_i_size = 0; /* * Prevent cloning from a zero offset with a length matching the sector -- 2.6.2