var opts ObjectOptions
	opts, err = putOptsFromReq(ctx, r, bucket, object, metadata)
	if err != nil {
		writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	actualSize := size
	var idxCb func() []byte
	if isCompressible(r.Header, object) && size > minCompressibleSize {
		// Storing the compression metadata.
		metadata[ReservedMetadataPrefix+"compression"] = compressionAlgorithmV2