From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from icp-osb-irony-out1.external.iinet.net.au ([203.59.1.210]:33360 "EHLO icp-osb-irony-out1.external.iinet.net.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727027AbfFXDIP (ORCPT ); Sun, 23 Jun 2019 23:08:15 -0400 Subject: [PATCH 07/10] xfs: mount-api - add xfs_fc_free() From: Ian Kent Date: Mon, 24 Jun 2019 10:59:02 +0800 Message-ID: <156134514204.2519.9597800141023778002.stgit@fedora-28> In-Reply-To: <156134510205.2519.16185588460828778620.stgit@fedora-28> References: <156134510205.2519.16185588460828778620.stgit@fedora-28> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs Cc: Dave Chinner , David Howells , Al Viro Add the fs_context_operations method .free that performs fs context cleanup on context release. Signed-off-by: Ian Kent --- fs/xfs/xfs_super.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index 7326b21b32d1..0a771e1390e7 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -2413,10 +2413,33 @@ static const struct super_operations xfs_super_operations = { .free_cached_objects = xfs_fs_free_cached_objects, }; +static void xfs_fc_free(struct fs_context *fc) +{ + struct xfs_fs_context *ctx = fc->fs_private; + struct xfs_mount *mp = fc->s_fs_info; + + if (mp) { + /* + * If an error occurs before ownership the xfs_mount + * info struct is passed to xfs by the VFS (by assigning + * it to sb->s_fs_info and clearing the corresponding + * fs_context field, done before calling fill super via + * .get_tree()) there may be some strings to cleanup. + */ + if (mp->m_logname) + kfree(mp->m_logname); + if (mp->m_rtname) + kfree(mp->m_rtname); + kfree(mp); + } + kfree(ctx); +} + static const struct fs_context_operations xfs_context_ops = { .parse_param = xfs_parse_param, .get_tree = xfs_get_tree, .reconfigure = xfs_reconfigure, + .free = xfs_fc_free, }; static struct file_system_type xfs_fs_type = {