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=-12.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 DD016C433E0 for ; Wed, 27 Jan 2021 08:28:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AA7E2070E for ; Wed, 27 Jan 2021 08:28:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231258AbhA0I1s (ORCPT ); Wed, 27 Jan 2021 03:27:48 -0500 Received: from mx2.suse.de ([195.135.220.15]:49146 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232753AbhA0IYg (ORCPT ); Wed, 27 Jan 2021 03:24:36 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1611734963; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=1fW61Yyz000lJma0e90KAjMru2VB6URi6ayHKhomjEk=; b=AnZ++RAjn4k4Pa52rJa5VSmFeeWGTFBfWzL8jJuBJjLtJIGfD3CUojWbWVCwgoBnHv6WKq 9wfBZH6ofa93VkUZz//wC3OeO+K29nicNAehCLb14pyCK95WiIM5tw7zjCzFvKlhitbDHN jPYri7LtOEgXBZQEj4yH+ZHs7pygyXQ= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 5B2FFB925; Wed, 27 Jan 2021 08:09:23 +0000 (UTC) Subject: Re: [PATCH v2] xen-blkfront: allow discard-* nodes to be optional To: Roger Pau Monne , linux-kernel@vger.kernel.org Cc: Arthur Borsboom , Boris Ostrovsky , Stefano Stabellini , Konrad Rzeszutek Wilk , Jens Axboe , xen-devel@lists.xenproject.org, linux-block@vger.kernel.org References: <20210119105727.95173-1-roger.pau@citrix.com> From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= Message-ID: Date: Wed, 27 Jan 2021 09:09:22 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.1 MIME-Version: 1.0 In-Reply-To: <20210119105727.95173-1-roger.pau@citrix.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Ao7bLDbznaqcyEQTExnEqI1zOWS70IXqQ" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Ao7bLDbznaqcyEQTExnEqI1zOWS70IXqQ Content-Type: multipart/mixed; boundary="FRInysTtmyvFTlxIDrkfHUnELRzHe5eK6"; protected-headers="v1" From: =?UTF-8?B?SsO8cmdlbiBHcm/Dnw==?= To: Roger Pau Monne , linux-kernel@vger.kernel.org Cc: Arthur Borsboom , Boris Ostrovsky , Stefano Stabellini , Konrad Rzeszutek Wilk , Jens Axboe , xen-devel@lists.xenproject.org, linux-block@vger.kernel.org Message-ID: Subject: Re: [PATCH v2] xen-blkfront: allow discard-* nodes to be optional References: <20210119105727.95173-1-roger.pau@citrix.com> In-Reply-To: <20210119105727.95173-1-roger.pau@citrix.com> --FRInysTtmyvFTlxIDrkfHUnELRzHe5eK6 Content-Type: multipart/mixed; boundary="------------4908A862D18199B275B706C3" Content-Language: en-US This is a multi-part message in MIME format. --------------4908A862D18199B275B706C3 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 19.01.21 11:57, Roger Pau Monne wrote: > This is inline with the specification described in blkif.h: >=20 > * discard-granularity: should be set to the physical block size if > node is not present. > * discard-alignment, discard-secure: should be set to 0 if node not > present. >=20 > This was detected as QEMU would only create the discard-granularity > node but not discard-alignment, and thus the setup done in > blkfront_setup_discard would fail. >=20 > Fix blkfront_setup_discard to not fail on missing nodes, and also fix > blkif_set_queue_limits to set the discard granularity to the physical > block size if none is specified in xenbus. >=20 > Fixes: ed30bf317c5ce ('xen-blkfront: Handle discard requests.') > Reported-by: Arthur Borsboom > Signed-off-by: Roger Pau Monn=C3=A9 Committed to xen/tip.git for-linus-5.11 Juergen --------------4908A862D18199B275B706C3 Content-Type: application/pgp-keys; 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