Btrfs-progs: introduce '-r' option to print max referenced size of qgroups

This patch introduces '-r' option to print max referenced size of qgroups.
You may use it like:

		btrfs qgroup show -r <path>

Signed-off-by: Wang Shilong <wangsl-fnst@cn.fujitsu.com>
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/qgroup.h b/qgroup.h
index 33682aeb..168fac07 100644
--- a/qgroup.h
+++ b/qgroup.h
@@ -26,6 +26,7 @@ enum btrfs_qgroup_column_enum {
 	BTRFS_QGROUP_QGROUPID,
 	BTRFS_QGROUP_RFER,
 	BTRFS_QGROUP_EXCL,
+	BTRFS_QGROUP_MAX_RFER,
 	BTRFS_QGROUP_PARENT,
 	BTRFS_QGROUP_CHILD,
 	BTRFS_QGROUP_ALL,