diff options
Diffstat (limited to 'fs/btrfs/qgroup.c')
| -rw-r--r-- | fs/btrfs/qgroup.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index 57169f474e4c..629fe893f4ab 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1889,6 +1889,41 @@ out: return ret; } +int btrfs_qgroup_cleanup_dropped_subvolume(struct btrfs_fs_info *fs_info, u64 subvolid) +{ + struct btrfs_trans_handle *trans; + int ret; + + if (!is_fstree(subvolid) || !btrfs_qgroup_enabled(fs_info) || !fs_info->quota_root) + return 0; + + /* + * Commit current transaction to make sure all the rfer/excl numbers + * get updated. + */ + trans = btrfs_start_transaction(fs_info->quota_root, 0); + if (IS_ERR(trans)) + return PTR_ERR(trans); + + ret = btrfs_commit_transaction(trans); + if (ret < 0) + return ret; + + /* Start new trans to delete the qgroup info and limit items. */ + trans = btrfs_start_transaction(fs_info->quota_root, 2); + if (IS_ERR(trans)) + return PTR_ERR(trans); + ret = btrfs_remove_qgroup(trans, subvolid); + btrfs_end_transaction(trans); + /* + * It's squota and the subvolume still has numbers needed for future + * accounting, in this case we can not delete it. Just skip it. + */ + if (ret == -EBUSY) + ret = 0; + return ret; +} + int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid, struct btrfs_qgroup_limit *limit) { |