CRYPTO_ACOMP_REQ_PRIVATE
flgs &= ~CRYPTO_ACOMP_REQ_PRIVATE;
flgs |= req->base.flags & CRYPTO_ACOMP_REQ_PRIVATE;
return crypto_request_flags(&req->base) & ~CRYPTO_ACOMP_REQ_PRIVATE;
req->base.flags &= ~CRYPTO_ACOMP_REQ_PRIVATE;
req->base.flags |= old->base.flags & CRYPTO_ACOMP_REQ_PRIVATE;