diff --git a/pkg/kubelet/volumemanager/volume_manager.go b/pkg/kubelet/volumemanager/volume_manager.go
index db22f33c3c0..77a06361582 100644
--- a/pkg/kubelet/volumemanager/volume_manager.go
+++ b/pkg/kubelet/volumemanager/volume_manager.go
@@ -20,7 +20,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"sort"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -340,7 +340,7 @@ func (vm *volumeManager) GetExtraSupplementalGroupsForPod(pod *v1.Pod) []int64 {
 	}
 
 	result := make([]int64, 0, supplementalGroups.Len())
-	for _, group := range sets.List(supplementalGroups) {
+	for _, group := range supplementalGroups.UnsortedList() {
 		iGroup, extra := getExtraSupplementalGid(group, pod)
 		if !extra {
 			continue
@@ -359,29 +359,21 @@ func (vm *volumeManager) GetVolumesInUse() []v1.UniqueVolumeName {
 	desiredVolumes := vm.desiredStateOfWorld.GetVolumesToMount()
 	allAttachedVolumes := vm.actualStateOfWorld.GetAttachedVolumes()
 	volumesToReportInUse := make([]v1.UniqueVolumeName, 0, len(desiredVolumes)+len(allAttachedVolumes))
-	desiredVolumesMap := make(map[v1.UniqueVolumeName]bool, len(desiredVolumes)+len(allAttachedVolumes))
 
 	for _, volume := range desiredVolumes {
 		if volume.PluginIsAttachable {
-			if _, exists := desiredVolumesMap[volume.VolumeName]; !exists {
-				desiredVolumesMap[volume.VolumeName] = true
-				volumesToReportInUse = append(volumesToReportInUse, volume.VolumeName)
-			}
+			volumesToReportInUse = append(volumesToReportInUse, volume.VolumeName)
 		}
 	}
 
 	for _, volume := range allAttachedVolumes {
 		if volume.PluginIsAttachable {
-			if _, exists := desiredVolumesMap[volume.VolumeName]; !exists {
-				volumesToReportInUse = append(volumesToReportInUse, volume.VolumeName)
-			}
+			volumesToReportInUse = append(volumesToReportInUse, volume.VolumeName)
 		}
 	}
 
-	sort.Slice(volumesToReportInUse, func(i, j int) bool {
-		return string(volumesToReportInUse[i]) < string(volumesToReportInUse[j])
-	})
-	return volumesToReportInUse
+	slices.Sort(volumesToReportInUse)
+	return slices.Compact(volumesToReportInUse)
 }
 
 func (vm *volumeManager) ReconcilerStatesHasBeenSynced() bool {
@@ -471,12 +463,11 @@ func (vm *volumeManager) WaitForUnmount(ctx context.Context, pod *v1.Pod) error
 		for _, v := range vm.actualStateOfWorld.GetMountedVolumesForPod(uniquePodName) {
 			mountedVolumes = append(mountedVolumes, v.OuterVolumeSpecName)
 		}
-		sort.Strings(mountedVolumes)
-
 		if len(mountedVolumes) == 0 {
 			return nil
 		}
 
+		slices.Sort(mountedVolumes)
 		return fmt.Errorf(
 			"mounted volumes=%v: %w",
 			mountedVolumes,
@@ -506,7 +497,7 @@ func (vm *volumeManager) WaitForAllPodsUnmount(ctx context.Context, pods []*v1.P
 }
 
 func (vm *volumeManager) getVolumesNotInDSW(uniquePodName types.UniquePodName, expectedVolumes []string) []string {
-	volumesNotInDSW := sets.New[string](expectedVolumes...)
+	volumesNotInDSW := sets.New(expectedVolumes...)
 
 	for _, volumeToMount := range vm.desiredStateOfWorld.GetVolumesToMount() {
 		if volumeToMount.PodName == uniquePodName {
@@ -528,7 +519,7 @@ func (vm *volumeManager) getUnattachedVolumes(uniquePodName types.UniquePodName)
 			unattachedVolumes = append(unattachedVolumes, volumeToMount.OuterVolumeSpecName)
 		}
 	}
-	sort.Strings(unattachedVolumes)
+	slices.Sort(unattachedVolumes)
 
 	return unattachedVolumes
 }
@@ -582,7 +573,7 @@ func filterUnmountedVolumes(mountedVolumes sets.Set[string], expectedVolumes []s
 			unmountedVolumes = append(unmountedVolumes, expectedVolume)
 		}
 	}
-	sort.Strings(unmountedVolumes)
+	slices.Sort(unmountedVolumes)
 
 	return unmountedVolumes
 }