From patchwork Fri Mar 20 10:01:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 6055331 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id DE9DABF90F for ; Fri, 20 Mar 2015 10:05:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0AD37204FC for ; Fri, 20 Mar 2015 10:05:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BF3E20465 for ; Fri, 20 Mar 2015 10:05:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751972AbbCTKFX (ORCPT ); Fri, 20 Mar 2015 06:05:23 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:36208 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751618AbbCTKEO (ORCPT ); Fri, 20 Mar 2015 06:04:14 -0400 Received: from ucsinet21.oracle.com (ucsinet21.oracle.com [156.151.31.93]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id t2KA4Auu014406 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 20 Mar 2015 10:04:11 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by ucsinet21.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id t2KA49mr004939 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 20 Mar 2015 10:04:10 GMT Received: from abhmp0004.oracle.com (abhmp0004.oracle.com [141.146.116.10]) by userv0121.oracle.com (8.13.8/8.13.8) with ESMTP id t2KA49Y6001932; Fri, 20 Mar 2015 10:04:09 GMT Received: from OL.sg.oracle.com (/10.186.101.34) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 20 Mar 2015 03:04:09 -0700 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: dsterba@suse.cz Subject: [PATCH 07/27] Btrfs: sysfs: reorder the kobject creations Date: Fri, 20 Mar 2015 18:01:22 +0800 Message-Id: <1426845702-6298-8-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 2.0.0.153.g79dcccc In-Reply-To: <1426845702-6298-1-git-send-email-anand.jain@oracle.com> References: <1425940724-7744-1-git-send-email-anand.jain@oracle.com> <1426845702-6298-1-git-send-email-anand.jain@oracle.com> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Anand Jain As of now the order in which the kobjects are created at btrfs_sysfs_add_one() is.. fsid features unknown features (dynamic features) devices. Since we would move fsid and device kobject to fs_devices from fs_info structure, this patch will reorder in which the kobjects are created as below. fsid devices features unknown features (dynamic features) And hence the btrfs_sysfs_remove_one() will follow the same in reverse order. and the device kobject destroy now can be moved into the function __btrfs_sysfs_remove_one() Signed-off-by: Anand Jain --- fs/btrfs/sysfs.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 506f7e4..c3e7f06 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -510,6 +510,13 @@ static int addrm_unknown_feature_attrs(struct btrfs_fs_info *fs_info, bool add) static void __btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info) { + if (fs_info->device_dir_kobj) { + btrfs_kobj_rm_device(fs_info, NULL); + kobject_del(fs_info->device_dir_kobj); + kobject_put(fs_info->device_dir_kobj); + fs_info->device_dir_kobj = NULL; + } + kobject_del(&fs_info->super_kobj); kobject_put(&fs_info->super_kobj); wait_for_completion(&fs_info->kobj_unregister); @@ -522,12 +529,6 @@ void btrfs_sysfs_remove_one(struct btrfs_fs_info *fs_info) kobject_del(fs_info->space_info_kobj); kobject_put(fs_info->space_info_kobj); } - if (fs_info->device_dir_kobj) { - btrfs_kobj_rm_device(fs_info, NULL); - kobject_del(fs_info->device_dir_kobj); - kobject_put(fs_info->device_dir_kobj); - fs_info->device_dir_kobj = NULL; - } addrm_unknown_feature_attrs(fs_info, false); sysfs_remove_group(&fs_info->super_kobj, &btrfs_feature_attr_group); __btrfs_sysfs_remove_one(fs_info); @@ -700,6 +701,12 @@ int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info) if (error) return error; + error = btrfs_kobj_add_device(fs_info, NULL); + if (error) { + __btrfs_sysfs_remove_one(fs_info); + return error; + } + error = sysfs_create_group(&fs_info->super_kobj, &btrfs_feature_attr_group); if (error) { @@ -711,10 +718,6 @@ int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info) if (error) goto failure; - error = btrfs_kobj_add_device(fs_info, NULL); - if (error) - goto failure; - fs_info->space_info_kobj = kobject_create_and_add("allocation", &fs_info->super_kobj); if (!fs_info->space_info_kobj) {