From patchwork Mon May 26 09:30:24 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anand Jain X-Patchwork-Id: 4240811 Return-Path: X-Original-To: patchwork-linux-btrfs@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id F08AE9F32B for ; Mon, 26 May 2014 09:27:39 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D603820170 for ; Mon, 26 May 2014 09:27:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F295D201CE for ; Mon, 26 May 2014 09:27:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752116AbaEZJ1c (ORCPT ); Mon, 26 May 2014 05:27:32 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:47898 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751782AbaEZJ1a (ORCPT ); Mon, 26 May 2014 05:27:30 -0400 Received: from ucsinet22.oracle.com (ucsinet22.oracle.com [156.151.31.94]) by aserp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id s4Q9ROhs032203 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 26 May 2014 09:27:25 GMT Received: from aserz7021.oracle.com (aserz7021.oracle.com [141.146.126.230]) by ucsinet22.oracle.com (8.14.5+Sun/8.14.5) with ESMTP id s4Q9RNJR007580 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 26 May 2014 09:27:24 GMT Received: from abhmp0003.oracle.com (abhmp0003.oracle.com [141.146.116.9]) by aserz7021.oracle.com (8.14.4+Sun/8.14.4) with ESMTP id s4Q9RNJY010307; Mon, 26 May 2014 09:27:23 GMT Received: from wish.sg.oracle.com (/10.186.101.18) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 26 May 2014 02:27:22 -0700 From: Anand Jain To: linux-btrfs@vger.kernel.org Cc: jeffm@suse.com, dsterba@suse.cz, clm@fb.com Subject: [PATCH 2/4] btrfs: dev add should add its sysfs entry Date: Mon, 26 May 2014 17:30:24 +0800 Message-Id: <1401096626-13210-3-git-send-email-anand.jain@oracle.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1401096626-13210-1-git-send-email-anand.jain@oracle.com> References: <1401096626-13210-1-git-send-email-anand.jain@oracle.com> X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, 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 we would need the device links to be created, when device is added. Signed-off-by: Anand Jain Reviewed-by: David Sterba --- fs/btrfs/sysfs.c | 12 +++++++++--- fs/btrfs/sysfs.h | 2 ++ fs/btrfs/volumes.c | 5 +++++ 3 files changed, 16 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 4fe3f0b..0f2ca33 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -592,14 +592,17 @@ int rm_device_membership(struct btrfs_fs_info *fs_info, return 0; } -static int add_device_membership(struct btrfs_fs_info *fs_info) +int add_device_membership(struct btrfs_fs_info *fs_info, + struct btrfs_device *one_device) { int error = 0; struct btrfs_fs_devices *fs_devices = fs_info->fs_devices; struct btrfs_device *dev; - fs_info->device_dir_kobj = kobject_create_and_add("devices", + if (!fs_info->device_dir_kobj) + fs_info->device_dir_kobj = kobject_create_and_add("devices", &fs_info->super_kobj); + if (!fs_info->device_dir_kobj) return -ENOMEM; @@ -610,6 +613,9 @@ static int add_device_membership(struct btrfs_fs_info *fs_info) if (!dev->bdev) continue; + if (one_device && one_device != dev) + continue; + disk = dev->bdev->bd_part; disk_kobj = &part_to_dev(disk)->kobj; @@ -653,7 +659,7 @@ int btrfs_sysfs_add_one(struct btrfs_fs_info *fs_info) if (error) goto failure; - error = add_device_membership(fs_info); + error = add_device_membership(fs_info, NULL); if (error) goto failure; diff --git a/fs/btrfs/sysfs.h b/fs/btrfs/sysfs.h index eaed810..2de1314 100644 --- a/fs/btrfs/sysfs.h +++ b/fs/btrfs/sysfs.h @@ -66,6 +66,8 @@ char *btrfs_printable_features(enum btrfs_feature_set set, u64 flags); extern const char * const btrfs_feature_set_names[3]; extern struct kobj_type space_info_ktype; extern struct kobj_type btrfs_raid_ktype; +int add_device_membership(struct btrfs_fs_info *fs_info, + struct btrfs_device *one_device); int rm_device_membership(struct btrfs_fs_info *fs_info, struct btrfs_device *one_device); #endif /* _BTRFS_SYSFS_H_ */ diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 3ceb28c..5a577ab 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2077,6 +2077,10 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path) total_bytes = btrfs_super_num_devices(root->fs_info->super_copy); btrfs_set_super_num_devices(root->fs_info->super_copy, total_bytes + 1); + + /* add sysfs device entry */ + add_device_membership(root->fs_info, device); + mutex_unlock(&root->fs_info->fs_devices->device_list_mutex); if (seeding_dev) { @@ -2137,6 +2141,7 @@ error_trans: unlock_chunks(root); btrfs_end_transaction(trans, root); rcu_string_free(device->name); + rm_device_membership(root->fs_info, device); kfree(device); error: blkdev_put(bdev, FMODE_EXCL);