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 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 78D831125827 for ; Wed, 11 Mar 2026 14:03:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A70B410E254; Wed, 11 Mar 2026 14:03:45 +0000 (UTC) Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id BD48D10E205; Wed, 11 Mar 2026 14:03:44 +0000 (UTC) Received: from omf20.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 4324D139CEA; Wed, 11 Mar 2026 14:03:38 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf20.hostedemail.com (Postfix) with ESMTPA id 0CF3220025; Wed, 11 Mar 2026 14:03:20 +0000 (UTC) Date: Wed, 11 Mar 2026 10:03:32 -0400 From: Steven Rostedt To: "Masami Hiramatsu (Google)" Cc: Philipp Hahn , amd-gfx@lists.freedesktop.org, apparmor@lists.ubuntu.com, bpf@vger.kernel.org, ceph-devel@vger.kernel.org, cocci@inria.fr, dm-devel@lists.linux.dev, dri-devel@lists.freedesktop.org, gfs2@lists.linux.dev, intel-gfx@lists.freedesktop.org, intel-wired-lan@lists.osuosl.org, iommu@lists.linux.dev, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-bluetooth@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-cifs@vger.kernel.org, linux-clk@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org, linux-media@vger.kernel.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, linux-modules@vger.kernel.org, linux-mtd@lists.infradead.org, linux-nfs@vger.kernel.org, linux-omap@vger.kernel.org, linux-phy@lists.infradead.org, linux-pm@vger.kernel.org, linux-rockchip@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-sctp@vger.kernel.org, linux-security-module@vger.kernel.org, linux-sh@vger.kernel.org, linux-sound@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-trace-kernel@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, ntfs3@lists.linux.dev, samba-technical@lists.samba.org, sched-ext@lists.linux.dev, target-devel@vger.kernel.org, tipc-discussion@lists.sourceforge.net, v9fs@lists.linux.dev, Mathieu Desnoyers Subject: Re: [PATCH 15/61] trace: Prefer IS_ERR_OR_NULL over manual NULL check Message-ID: <20260311100332.6a2ce4b1@gandalf.local.home> In-Reply-To: <20260311141332.b611237d36b61b2409e66cb3@kernel.org> References: <20260310-b4-is_err_or_null-v1-0-bd63b656022d@avm.de> <20260310-b4-is_err_or_null-v1-15-bd63b656022d@avm.de> <20260310100750.303af303@gandalf.local.home> <20260311141332.b611237d36b61b2409e66cb3@kernel.org> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 0CF3220025 X-Stat-Signature: ff8ct3tumfmuryqygkfkcm78w16u4scc X-Rspamd-Server: rspamout03 X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX1+skqrXXDxm4il2tsYmj25H0/GTzSRdMUI= X-HE-Tag: 1773237800-364001 X-HE-Meta: U2FsdGVkX1+aU4mY7bFvO8lRauP/vgjT20dobHa0QHVROVhTP6xZNvlHFy+HnthX7C3DUw86Ksayk8kipkioUde1pGRJffeDzlmGTmiRQAtxOhSsM3gHnZJQZGdgNXBABYZdeE7OsMEvCI5Ff4ZQbbyu3yXHRyZXg5AHof/AO0vcusmeqjpCWWhtLLOcuZIY7+tOVjT7VktVnLaFPp1jjRLc3JQ2sJ4jp/SiL4aHgDK/k//b9d34oAYT+AlJT32Fm0BFv3eObF3U3OAnj7CnGXu0MyQ+0edSgYKqKIiOybnUsF1fYSODF4X+zk3bqwV4HOqJnRMkZevrGktYEsiiqb8/qNY0d6MZ X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Wed, 11 Mar 2026 14:13:32 +0900 Masami Hiramatsu (Google) wrote: > Hmm, now IS_ERR_OR_NULL() is an inline function, so it is safe. > But if you want to use IS_ERR_OR_NULL() here, it will be better something like > > node = rhashtable_walk_next(&iter); > while (!IS_ERR_OR_NULL(node)) { > fprobe_remove_node_in_module(mod, node, &alist); > node = rhashtable_walk_next(&iter); > } But now you need to have a duplicate code in order to acquire "node" I think the patch just makes the code worse. -- Steve