Remove ProcMountType

pkg/api/pod/util.go

@@ -402,7 +402,7 @@ func dropDisabledRunAsGroupField(podSpec, oldPodSpec *api.PodSpec) {
 // dropDisabledProcMountField removes disabled fields from PodSpec related
 // to ProcMount only if it is not already used by the old spec
 func dropDisabledProcMountField(podSpec, oldPodSpec *api.PodSpec) {
-	if !utilfeature.DefaultFeatureGate.Enabled(features.ProcMountType) && !procMountInUse(oldPodSpec) {
+	if !procMountInUse(oldPodSpec) {
 		defaultProcMount := api.DefaultProcMount
 		for i := range podSpec.Containers {
 			if podSpec.Containers[i].SecurityContext != nil {

pkg/api/podsecuritypolicy/util.go

@@ -25,7 +25,7 @@ import (
 // DropDisabledFields removes disabled fields from the pod security policy spec.
 // This should be called from PrepareForCreate/PrepareForUpdate for all resources containing a od security policy spec.
 func DropDisabledFields(pspSpec, oldPSPSpec *policy.PodSecurityPolicySpec) {
-	if !utilfeature.DefaultFeatureGate.Enabled(features.ProcMountType) && !allowedProcMountTypesInUse(oldPSPSpec) {
+	if !allowedProcMountTypesInUse(oldPSPSpec) {
 		pspSpec.AllowedProcMountTypes = nil
 	}
 	if !utilfeature.DefaultFeatureGate.Enabled(features.RunAsGroup) && (oldPSPSpec == nil || oldPSPSpec.RunAsGroup == nil) {

pkg/features/kube_features.go

@@ -296,12 +296,6 @@ const (
 	// (Kube) Node Lifecycle Controller uses these heartbeats as a node health signal.
 	NodeLease utilfeature.Feature = "NodeLease"
 
-	// owner: @jessfraz
-	// alpha: v1.12
-	//
-	// Enables control over ProcMountType for containers.
-	ProcMountType utilfeature.Feature = "ProcMountType"
-
 	// owner: @janetkuo
 	// alpha: v1.12
 	//
@@ -406,7 +400,6 @@ var defaultKubernetesFeatureGates = map[utilfeature.Feature]utilfeature.FeatureS
 	CSIInlineVolume:                         {Default: false, PreRelease: utilfeature.Alpha},
 	RuntimeClass:                            {Default: true, PreRelease: utilfeature.Beta},
 	NodeLease:                               {Default: true, PreRelease: utilfeature.Beta},
-	ProcMountType:                           {Default: false, PreRelease: utilfeature.Alpha},
 	TTLAfterFinished:                        {Default: false, PreRelease: utilfeature.Alpha},
 	KubeletPodResources:                     {Default: false, PreRelease: utilfeature.Alpha},
 	WindowsGMSA:                             {Default: false, PreRelease: utilfeature.Alpha},