From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:34074 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727790AbeGZIO3 (ORCPT ); Thu, 26 Jul 2018 04:14:29 -0400 Received: from relay1.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id DB2C1ACF3 for ; Thu, 26 Jul 2018 06:59:04 +0000 (UTC) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH] btrfs: qgroup: Auto kick in rescan if qgroup tree is initialized without rescan initialized Date: Thu, 26 Jul 2018 14:59:00 +0800 Message-Id: <20180726065900.8469-1-wqu@suse.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: Under certain case, btrfs/166 could cause power loss just after quota tree initialized but rescan not kicked in. In this case, since flags of qgroup status item is just ON | INCONSISTENT, without RESCAN flag, rescan won't be kicked in in next mount. Now kick in rescan automatically for such situation, so user won't need to do rescan manually. Signed-off-by: Qu Wenruo --- fs/btrfs/qgroup.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index c25dc47210a3..e62598fc354f 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -392,6 +392,17 @@ int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info) fs_info->qgroup_flags = btrfs_qgroup_status_flags(l, ptr); rescan_progress = btrfs_qgroup_status_rescan(l, ptr); + + /* + * Qgroup is enabled but rescan hans't kicked in and + * power loss happened, kick rescan in + */ + if (rescan_progress == 0 && + (BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT | + BTRFS_QGROUP_STATUS_FLAG_ON) == + fs_info->qgroup_flags) + fs_info->qgroup_flags |= + BTRFS_QGROUP_STATUS_FLAG_RESCAN; goto next1; } -- 2.18.0