kubernetes/staging/src/k8s.io/mount-utils/mount_helper_common.go

// CleanupMountPoint unmounts the given path and deletes the remaining directory
// if successful. If extensiveMountPointCheck is true IsNotMountPoint will be
// called instead of IsLikelyNotMountPoint. IsNotMountPoint is more expensive
// but properly handles bind mounts within the same fs.
func CleanupMountPoint(mountPath string, mounter Interface, extensiveMountPointCheck bool) error { … }

func CleanupMountWithForce(mountPath string, mounter MounterForceUnmounter, extensiveMountPointCheck bool, umountTimeout time.Duration) error { … }

// doCleanupMountPoint unmounts the given path and
// deletes the remaining directory if successful.
// if extensiveMountPointCheck is true
// IsNotMountPoint will be called instead of IsLikelyNotMountPoint.
// IsNotMountPoint is more expensive but properly handles bind mounts within the same fs.
// if corruptedMnt is true, it means that the mountPath is a corrupted mountpoint, and the mount point check
// will be skipped. The mount point check will also be skipped if the mounter supports it.
func doCleanupMountPoint(mountPath string, mounter Interface, extensiveMountPointCheck bool, corruptedMnt bool) error { … }

// removePathIfNotMountPoint verifies if given mountPath is a mount point if not it attempts
// to remove the directory. Returns true and nil if directory was not a mount point and removed.
func removePathIfNotMountPoint(mountPath string, mounter Interface, extensiveMountPointCheck bool) (bool, error) { … }

// removePath attempts to remove the directory. Returns nil if the directory was removed or does not exist.
func removePath(mountPath string) error { … }