From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55C0DC76192 for ; Wed, 17 Jul 2019 08:28:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2E44D20818 for ; Wed, 17 Jul 2019 08:28:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725907AbfGQI2S (ORCPT ); Wed, 17 Jul 2019 04:28:18 -0400 Received: from a.mx.secunet.com ([62.96.220.36]:33830 "EHLO a.mx.secunet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725799AbfGQI2R (ORCPT ); Wed, 17 Jul 2019 04:28:17 -0400 Received: from localhost (localhost [127.0.0.1]) by a.mx.secunet.com (Postfix) with ESMTP id 117BC201E3; Wed, 17 Jul 2019 10:28:16 +0200 (CEST) X-Virus-Scanned: by secunet Received: from a.mx.secunet.com ([127.0.0.1]) by localhost (a.mx.secunet.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id u9EW9tYmRCwt; Wed, 17 Jul 2019 10:28:15 +0200 (CEST) Received: from mail-essen-01.secunet.de (mail-essen-01.secunet.de [10.53.40.204]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by a.mx.secunet.com (Postfix) with ESMTPS id A869F2008D; Wed, 17 Jul 2019 10:28:15 +0200 (CEST) Received: from gauss2.secunet.de (10.182.7.193) by mail-essen-01.secunet.de (10.53.40.204) with Microsoft SMTP Server id 14.3.439.0; Wed, 17 Jul 2019 10:28:15 +0200 Received: by gauss2.secunet.de (Postfix, from userid 1000) id 459AE318055E; Wed, 17 Jul 2019 10:28:15 +0200 (CEST) Date: Wed, 17 Jul 2019 10:28:15 +0200 From: Steffen Klassert To: Herbert Xu CC: Daniel Jordan , , , , , , , Subject: Re: [PATCH] padata: Use RCU when fetching pd from do_serial Message-ID: <20190717082815.GP17989@gauss3.secunet.de> References: <20190711221205.29889-1-daniel.m.jordan@oracle.com> <20190712100636.mqdr567p7ozanlyl@gondor.apana.org.au> <20190712101012.GW14601@gauss3.secunet.de> <20190712160737.iniaaxlsnhs6azg5@ca-dmjordan1.us.oracle.com> <20190713050321.c5wq7a7jrb6q2pxn@gondor.apana.org.au> <20190715161045.zqwgsp62uqjnvx3l@ca-dmjordan1.us.oracle.com> <20190716100447.pdongriwwfxsuajf@gondor.apana.org.au> <20190716111410.GN17989@gauss3.secunet.de> <20190716125704.l2jolyyd3bue6hhn@gondor.apana.org.au> <20190716130928.ga4acvxipsdzyzlp@gondor.apana.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <20190716130928.ga4acvxipsdzyzlp@gondor.apana.org.au> User-Agent: Mutt/1.9.4 (2018-02-28) X-EXCLAIMER-MD-CONFIG: 2c86f778-e09b-4440-8b15-867914633a10 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org On Tue, Jul 16, 2019 at 09:09:28PM +0800, Herbert Xu wrote: > > However, I think this leads to another bug in that pcrypt doesn't > support dm-crypt properly. It never does the backlog stuff and > therefore can't guarantee reliable processing which dm-crypt requires. > > Is it intentional to only allow pcrypt for IPsec? I had a patch to support crypto backlog some years ago, but testing with dm-crypt did not show any performance improvement. So I decided to just skip that patch because it added code for no need.