diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 8b75e974f30b9..68b7d678790cf 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -2089,6 +2089,33 @@ static ssize_t qgroup_enabled_show(struct kobject *qgroups_kobj,
 }
 BTRFS_ATTR(qgroups, enabled, qgroup_enabled_show);
 
+static ssize_t qgroup_mode_show(struct kobject *qgroups_kobj,
+				struct kobj_attribute *a,
+				char *buf)
+{
+	struct btrfs_fs_info *fs_info = to_fs_info(qgroups_kobj->parent);
+	ssize_t ret = 0;
+
+	spin_lock(&fs_info->qgroup_lock);
+	ASSERT(btrfs_qgroup_enabled(fs_info));
+	switch (btrfs_qgroup_mode(fs_info)) {
+	case BTRFS_QGROUP_MODE_FULL:
+		ret = sysfs_emit(buf, "qgroup\n");
+		break;
+	case BTRFS_QGROUP_MODE_SIMPLE:
+		ret = sysfs_emit(buf, "squota\n");
+		break;
+	default:
+		btrfs_warn(fs_info, "unexpected qgroup mode %d\n",
+			   btrfs_qgroup_mode(fs_info));
+		break;
+	}
+	spin_unlock(&fs_info->qgroup_lock);
+
+	return ret;
+}
+BTRFS_ATTR(qgroups, mode, qgroup_mode_show);
+
 static ssize_t qgroup_inconsistent_show(struct kobject *qgroups_kobj,
 					struct kobj_attribute *a,
 					char *buf)
@@ -2151,6 +2178,7 @@ static struct attribute *qgroups_attrs[] = {
 	BTRFS_ATTR_PTR(qgroups, enabled),
 	BTRFS_ATTR_PTR(qgroups, inconsistent),
 	BTRFS_ATTR_PTR(qgroups, drop_subtree_threshold),
+	BTRFS_ATTR_PTR(qgroups, mode),
 	NULL
 };
 ATTRIBUTE_GROUPS(qgroups);