pkg context, func WithCancel(Context) (Context, CancelFunc)
pkg context, func WithDeadline(Context, time.Time) (Context, CancelFunc)
pkg context, func WithTimeout(Context, time.Duration) (Context, CancelFunc)
pkg context, func WithValue(Context, interface{}, interface{}) Context
pkg context, type CancelFunc func()
pkg context, type Context interface { Deadline, Done, Err, Value }
pkg context, type Context interface, Deadline() (time.Time, bool)

	if err != nil {
		return resp, err
	}
	switch any(req).(type) {
	case *MSS, *URLValues:
		ctx = context.WithValue(ctx, TraceParamsKey{}, req)
	case *NoPayload, *Bytes:
		// do not need to trace nopayload and bytes payload
	default:
		ctx = context.WithValue(ctx, TraceParamsKey{}, fmt.Sprintf("type=%T", req))
	}
	if h.callReuseReq {
		defer h.recycleReq(req)
	}

	// Also, pass the trace context info if found for debugging
	netLockCtx := context.Background()

	tc, ok := ctx.Value(mcontext.ContextTraceKey).(*mcontext.TraceCtxt)
	if ok {
		netLockCtx = context.WithValue(netLockCtx, mcontext.ContextTraceKey, tc)
	}

	for index, c := range restClnts {
		wg.Add(1)
		// broadcast lock request to all nodes
		go func(index int, isReadLock bool, c NetLocker) {
			defer wg.Done()

	if err != nil {
		return result, err
	}

	tgts, err := config.ParseConfigTargetID(bytes.NewReader(kvBytes))
	if err != nil {
		return result, err
	}
	ctx = context.WithValue(ctx, config.ContextKeyForTargetFromConfig, tgts)
	if verr := validateConfig(ctx, result.Cfg, result.SubSys); verr != nil {
		err = badConfigErr{Err: verr}
		return result, err
	}

		return ctx, done, nil
	}

	if contextCanceled(ctx) {
		return ctx, done, ctx.Err()
	}

	atomic.StoreInt64(&p.health.lastStarted, time.Now().UnixNano())
	p.health.waiting.Add(1)

	ctx = context.WithValue(ctx, healthDiskCtxKey{}, &healthDiskCtxValue{lastSuccess: &p.health.lastSuccess})
	si := p.updateStorageMetrics(s, paths...)
	var once sync.Once
	return ctx, func(sz int64, errp *error) {
		p.health.waiting.Add(-1)