kubernetes/vendor/github.com/opencontainers/runc/libcontainer/cgroups/fs2/io.go

func isIoSet(r *configs.Resources) bool { … }

// bfqDeviceWeightSupported checks for per-device BFQ weight support (added
// in kernel v5.4, commit 795fe54c2a8) by reading from "io.bfq.weight".
func bfqDeviceWeightSupported(bfq *os.File) bool { … }

func setIo(dirPath string, r *configs.Resources) error { … }

func readCgroup2MapFile(dirPath string, name string) (map[string][]string, error) { … }

func statIo(dirPath string, stats *cgroups.Stats) error { … }