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=-5.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 6B051C433DF for ; Mon, 24 Aug 2020 11:32:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 47FBD207D3 for ; Mon, 24 Aug 2020 11:32:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727020AbgHXLbz (ORCPT ); Mon, 24 Aug 2020 07:31:55 -0400 Received: from mx2.suse.de ([195.135.220.15]:34234 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727000AbgHXLbr (ORCPT ); Mon, 24 Aug 2020 07:31:47 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 11525AB7D; Mon, 24 Aug 2020 11:32:14 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id 69600DA730; Mon, 24 Aug 2020 13:30:36 +0200 (CEST) Date: Mon, 24 Aug 2020 13:30:36 +0200 From: David Sterba To: Josef Bacik Cc: dsterba@suse.cz, Nikolay Borisov , linux-btrfs@vger.kernel.org, kernel-team@fb.com Subject: Re: [PATCH 2/2] btrfs: pretty print leaked root name Message-ID: <20200824113036.GI2026@twin.jikos.cz> Reply-To: dsterba@suse.cz Mail-Followup-To: dsterba@suse.cz, Josef Bacik , Nikolay Borisov , linux-btrfs@vger.kernel.org, kernel-team@fb.com References: <461693e5c015857e684878e99e5e65075bb97c13.1597953516.git.josef@toxicpanda.com> <20200821101301.GC2026@twin.jikos.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23.1-rc1 (2014-03-12) Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org On Fri, Aug 21, 2020 at 10:00:35AM -0400, Josef Bacik wrote: > On 8/21/20 6:13 AM, David Sterba wrote: > > On Fri, Aug 21, 2020 at 10:35:38AM +0300, Nikolay Borisov wrote: > >>> root = list_first_entry(&fs_info->allocated_roots, > >>> struct btrfs_root, leak_list); > >>> - btrfs_err(fs_info, "leaked root %llu-%llu refcount %d", > >>> - root->root_key.objectid, root->root_key.offset, > >>> - refcount_read(&root->refs)); > >>> + btrfs_err(fs_info, "leaked root %s%lld-%llu refcount %d", > >> > >> nit: Won't this string result in some rather awkward looking strings, > >> such as: > >> > >> "leaked root ROOT_TREE-..." i.e shouldn't the > >> (objectid,offset) pair be marked with parentheses? > > > > I don't understand why need/want to print the offset here. It is from > > the key.offset but for a message we should print it in an understandable > > way. > > The offset matters for the TREE_RELOC roots, because it's the object id > of the fs root that the reloc root refers to. Thanks, Ok, that makes sense to print, though printing it as offset=... looks confusing. Could it be rephrased to refer to the fs tree and reloc tree?