From patchwork Thu Jul 25 13:16:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Weitao Hou X-Patchwork-Id: 1136890 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-ext4-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="iQnu075q"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 45vXnN6TMkz9sDB for ; Thu, 25 Jul 2019 23:17:28 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388224AbfGYNRS (ORCPT ); Thu, 25 Jul 2019 09:17:18 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:36781 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725808AbfGYNRS (ORCPT ); Thu, 25 Jul 2019 09:17:18 -0400 Received: by mail-pg1-f193.google.com with SMTP id l21so23036486pgm.3; Thu, 25 Jul 2019 06:17:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=Ycy5o+IU0EPnxlpcClcRjsZgu0JnXAr12t4875sIpnc=; b=iQnu075qF1OwZs/P4HgRfemlmO0OgxUKiZWUJrKsV/ontV4eapR8XcS3jzHL6tDV8p W12oLCSQ/SYwOXhFidUpQwURL4n1qGOAD08XkpXZpSvgapQQoMaPfMUYIdsbA41lsv0q Wnck4Vm7f7U4IPCFTCVFqcOV93Xjm0XXDernUQVvFFliUlqwwL0Z3JUSq4zY4y5qmy1S ujbmy3aFgLfm0ToHJKPj5pYS0Mvgs102e5lll3Umeji69Dw1zzbt2vopF0bXwobvYYMD gxvHA60KK087gj6UQS0miEiXkIgmY+fVnHiFJbbyn8Eu60sNWrrQFSFNIBXp7bHvpWif 1jdQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=Ycy5o+IU0EPnxlpcClcRjsZgu0JnXAr12t4875sIpnc=; b=edtdb7dTuEyjYPvSplW0nJoA3NpTQCu6SokPejF3x5ys0Xpuh2JXv6t/jAfhj1F2Oi co7RTJ8Fk3Ly1FrZHkeGrcYluZK9DwRX0mVE0lc0QXHyaP6b9h7TucVxZw/5R/fOz/JK gx85P3G6oTWPGdKXOC6IpsxcrKFDkskps7kgD9qcDUcsandxsayIZaQQ8Ze+GbHBCReH +JL25hBaZoiXVTumScRSVd937imZXOez0Ic1jGx/kvIFVMNtMESOKv04cHZneSYXY9g9 5mh1WmFZOOsuL6P3XSgR++IpgCHK4GR6DUhuXCRHyl2jvm47yLmzVGVkoX2XxvmSD7O4 x6Lg== X-Gm-Message-State: APjAAAXny/0crQ0ZeZlDCp67rPhwLzFdsWxDU9Y3xei6a2cPPNjgvTlL 6T41f6KnjkPOsXGH9ixWKIxwYnED X-Google-Smtp-Source: APXvYqyYfnqqv+HNz5k8fZbU69PPLkId1i+OWVn9AvwhzB5pslJey7LyjNVrTiNwtDXoVVIYcR8rJA== X-Received: by 2002:a65:62c4:: with SMTP id m4mr84421324pgv.243.1564060637503; Thu, 25 Jul 2019 06:17:17 -0700 (PDT) Received: from localhost ([43.224.245.179]) by smtp.gmail.com with ESMTPSA id p23sm55101921pfn.10.2019.07.25.06.17.16 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 25 Jul 2019 06:17:16 -0700 (PDT) From: Weitao Hou To: tytso@mit.edu, adilger.kernel@dilger.ca Cc: linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, Weitao Hou Subject: [PATCH] ext4: use rb_entry_safe() instead of open-coding it Date: Thu, 25 Jul 2019 21:16:58 +0800 Message-Id: <20190725131658.17187-1-houweitaoo@gmail.com> X-Mailer: git-send-email 2.18.0 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org use rb_entry_safe() to make it clean Signed-off-by: Weitao Hou Reviewed-by: Jan Kara --- fs/ext4/extents_status.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 7521de2dcf3a..08ce5ded3538 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -228,8 +228,7 @@ static struct extent_status *__es_tree_search(struct rb_root *root, if (es && lblk > ext4_es_end(es)) { node = rb_next(&es->rb_node); - return node ? rb_entry(node, struct extent_status, rb_node) : - NULL; + return rb_entry_safe(node, struct extent_status, rb_node); } return NULL;