diff --git a/cephfs/admin/flags.go b/cephfs/admin/flags.go
new file mode 100644
index 0000000..ce753d7
--- /dev/null
+++ b/cephfs/admin/flags.go
@@ -0,0 +1,18 @@
+// +build !luminous,!mimic
+
+package admin
+
+type rmFlags struct {
+	force bool
+}
+
+func (f rmFlags) Update(m map[string]string) map[string]interface{} {
+	o := make(map[string]interface{})
+	for k, v := range m {
+		o[k] = v
+	}
+	if f.force {
+		o["force"] = true
+	}
+	return o
+}
diff --git a/cephfs/admin/fsadmin.go b/cephfs/admin/fsadmin.go
index 2b49980..e7bed2d 100644
--- a/cephfs/admin/fsadmin.go
+++ b/cephfs/admin/fsadmin.go
@@ -143,18 +143,3 @@ func modeString(m int, force bool) string {
 func uint64String(v uint64) string {
 	return strconv.FormatUint(uint64(v), 10)
 }
-
-type rmFlags struct {
-	force bool
-}
-
-func (f rmFlags) Update(m map[string]string) map[string]interface{} {
-	o := make(map[string]interface{})
-	for k, v := range m {
-		o[k] = v
-	}
-	if f.force {
-		o["force"] = true
-	}
-	return o
-}