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=-8.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 6F591C2D0E2 for ; Tue, 22 Sep 2020 14:52:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21BD32396D for ; Tue, 22 Sep 2020 14:52:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="Z+jhQ3zr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726686AbgIVOwu (ORCPT ); Tue, 22 Sep 2020 10:52:50 -0400 Received: from smtp-fw-9102.amazon.com ([207.171.184.29]:25453 "EHLO smtp-fw-9102.amazon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726640AbgIVOwu (ORCPT ); Tue, 22 Sep 2020 10:52:50 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1600786371; x=1632322371; h=from:to:cc:subject:date:message-id:mime-version: in-reply-to:content-transfer-encoding; bh=T9Oqjy4Aak9yvrDD8pdwIk5ZvPiudTMfoePpU2Nlp48=; b=Z+jhQ3zrac0xjEd+3UCzosyOHRc6xBQjlc/bu72xy+H/wKbbvyA8CiJp WVMv1XBbt2VBOUyGmjd9/DkxDnP7hj9GtysJu96+8eM2GYQMNZ5CG9V23 4hnvZI5vFC4UHpclxgB+yM5RBRytLfyEp8ocsua5QAHUgUkgYYL7hdBtQ s=; X-IronPort-AV: E=Sophos;i="5.77,291,1596499200"; d="scan'208";a="78282518" Received: from sea32-co-svc-lb4-vlan3.sea.corp.amazon.com (HELO email-inbound-relay-1a-7d76a15f.us-east-1.amazon.com) ([10.47.23.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 22 Sep 2020 14:52:47 +0000 Received: from EX13D31EUA004.ant.amazon.com (iad12-ws-svc-p26-lb9-vlan3.iad.amazon.com [10.40.163.38]) by email-inbound-relay-1a-7d76a15f.us-east-1.amazon.com (Postfix) with ESMTPS id 9F408A18FB; Tue, 22 Sep 2020 14:52:44 +0000 (UTC) Received: from u3f2cd687b01c55.ant.amazon.com (10.43.160.137) by EX13D31EUA004.ant.amazon.com (10.43.165.161) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 22 Sep 2020 14:52:37 +0000 From: SeongJae Park To: =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= CC: SeongJae Park , , , SeongJae Park , , , , , , , , Subject: Re: [PATCH v3 0/3] xen-blk(back|front): Let users disable persistent grants Date: Tue, 22 Sep 2020 16:52:21 +0200 Message-ID: <20200922145221.3131-1-sjpark@amazon.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 In-Reply-To: <20200922144556.GM19254@Air-de-Roger> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.43.160.137] X-ClientProxiedBy: EX13P01UWB001.ant.amazon.com (10.43.161.59) To EX13D31EUA004.ant.amazon.com (10.43.165.161) Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Tue, 22 Sep 2020 16:45:56 +0200 "Roger Pau Monné" wrote: > On Tue, Sep 22, 2020 at 04:15:46PM +0200, SeongJae Park wrote: > > From: SeongJae Park > > > > Persistent grants feature provides high scalability. On some small > > systems, however, it could incur data copy overheads[1] and thus it is > > required to be disabled. But, there is no option to disable it. For > > the reason, this commit adds module parameters for disabling of the > > feature. > > With the changes requested by Jürgen you can add my: > > Acked-by: Roger Pau Monné Thank you for your kind and helpful reviews! Thanks, SeongJae Park