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[173.230.104.22]) by smtp.gmail.com with ESMTPSA id c194sm13767233itc.3.2018.12.25.21.38.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 25 Dec 2018 21:38:11 -0800 (PST) From: Kangjie Lu To: kjlu@umn.edu Cc: pakki001@umn.edu, Chris Mason , Josef Bacik , David Sterba , linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] btrfs: add a check for sysfs_create_group Date: Tue, 25 Dec 2018 23:37:44 -0600 Message-Id: <20181226053744.74740-1-kjlu@umn.edu> X-Mailer: git-send-email 2.17.2 (Apple Git-113) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org In case sysfs_create_group fails, let's check its return value and issues an error message. Signed-off-by: Kangjie Lu --- fs/btrfs/sysfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 3717c864ba23..24ef416e700b 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -889,6 +889,8 @@ void btrfs_sysfs_feature_update(struct btrfs_fs_info *fs_info, */ sysfs_remove_group(fsid_kobj, &btrfs_feature_attr_group); ret = sysfs_create_group(fsid_kobj, &btrfs_feature_attr_group); + if (ret) + btrfs_err(fs_info, "failed to create btrfs_feature_attr_group.\n"); } static int btrfs_init_debugfs(void) -- 2.17.2 (Apple Git-113)