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=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 663AEC2D0E2 for ; Tue, 22 Sep 2020 14:46:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C30A2395C for ; Tue, 22 Sep 2020 14:46:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="ZL3ZwePx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726710AbgIVOqP (ORCPT ); Tue, 22 Sep 2020 10:46:15 -0400 Received: from esa2.hc3370-68.iphmx.com ([216.71.145.153]:49512 "EHLO esa2.hc3370-68.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726620AbgIVOqO (ORCPT ); Tue, 22 Sep 2020 10:46:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1600785975; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=EmRqnwZkNjgmrTlp2NTYJohV1w/jVZEYxakF+X9OdtA=; b=ZL3ZwePxjLovCuXSRSRQbmY8Zzgi5DvAI9drEXyM+SLFzMBGfOMiRX9n z1M93P/kigU+OWvuuwZt1lUD2WHjF6sfP8FrixhafOACTcVw1J9q8WomW JEZackzI8ZOoTFk2QQuQhfBG36i0KebNN6jf+atpSMir6VosSPm1v4YY/ M=; Authentication-Results: esa2.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: hIkNa/LVZnMu/m3flefxEOm5p2LEvNpZm9vQF2cgCY3qmLAaucY99PGGuxjucQnDOnzrYcqjf9 UrUGpN7u83iK25IeZcn/TPhDA2cLJuL70GJKzwGIxnR892Ix45R3jErAUD/tIFYx9KZWf5vEpE 2WQt6QRyF+zZGnJlC8cjn1+D+6c/NgT2c8oxstwNWnEjkxFZq9pEBK8fiu5kf2cU/zS8kCbkn+ Q3UIyDTdb9Axkw6l3DMqeZ4NhofBEBCJ/AkQdeJJPyGPm+7XO7PHusiFkaWlzluOySeRwM4vn1 m8I= X-SBRS: 2.7 X-MesageID: 27271531 X-Ironport-Server: esa2.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.77,291,1596513600"; d="scan'208";a="27271531" Date: Tue, 22 Sep 2020 16:45:56 +0200 From: Roger Pau =?utf-8?B?TW9ubsOp?= To: SeongJae Park CC: , , SeongJae Park , , , , , , , , Subject: Re: [PATCH v3 0/3] xen-blk(back|front): Let users disable persistent grants Message-ID: <20200922144556.GM19254@Air-de-Roger> References: <20200922141549.26154-1-sjpark@amazon.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20200922141549.26154-1-sjpark@amazon.com> X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To FTLPEX02CL06.citrite.net (10.13.108.179) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Thanks, Roger.