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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 20764C433E0 for ; Sun, 28 Jun 2020 05:07:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F2CD220782 for ; Sun, 28 Jun 2020 05:07:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726071AbgF1FHW (ORCPT ); Sun, 28 Jun 2020 01:07:22 -0400 Received: from mx2.suse.de ([195.135.220.15]:50842 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726056AbgF1FHW (ORCPT ); Sun, 28 Jun 2020 01:07:22 -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 A6ECEAD7B for ; Sun, 28 Jun 2020 05:07:20 +0000 (UTC) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH v2 0/2] btrfs: add sysfs interface for qgroup Date: Sun, 28 Jun 2020 13:07:13 +0800 Message-Id: <20200628050715.60961-1-wqu@suse.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org This patchset will add the following sysfs interfaces for qgroup: /sys/fs/btrfs//qgroups//reference /sys/fs/btrfs//qgroups//exclusive /sys/fs/btrfs//qgroups//max_reference /sys/fs/btrfs//qgroups//max_exclusive /sys/fs/btrfs//qgroups//limit_flags ^^^ Above are already in "btrfs qgroup show" command output ^^^ /sys/fs/btrfs//qgroups//rsv_data /sys/fs/btrfs//qgroups//rsv_meta_pertrans /sys/fs/btrfs//qgroups//rsv_meta_prealloc These interfaces are mostly for debug purpose, to give us a clear view of which part is leaking. Changelog: v2: - Add a new patch to change the return value type of btrfs_qgroup_level() - Fix the wrong btrfs_sysfs_add_one_qgroup() call timming That function needs to allocate memory, thus can't be called in add_qgroup_rb() where some call sites are holding a spin lock. Delay btrfs_sysfs_add_one_qgroup() after add_qgroup_rb() until the spin lock is released. - Skip qgroup sysfs interface for qgroup selftest This makes no sense for selftest to initialize the sysfs interface and since we don't initialize fs_devices->kobj either, it's not possible to utilize the sysfs interface in selftest. - Use proper helpers for qgroup BTRFS_ATTRs - Use more human-readable names in qgroup sysfs entries - Remove the unneeded completion for qgroup Qu Wenruo (2): btrfs: use __u16 for the return value of btrfs_qgroup_level() btrfs: qgroup: add sysfs interface for debug fs/btrfs/ctree.h | 1 + fs/btrfs/qgroup.c | 46 +++++++--- fs/btrfs/qgroup.h | 11 +++ fs/btrfs/sysfs.c | 151 ++++++++++++++++++++++++++++++++ fs/btrfs/sysfs.h | 6 ++ include/uapi/linux/btrfs_tree.h | 4 +- 6 files changed, 207 insertions(+), 12 deletions(-) -- 2.27.0