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=-3.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,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 ACFECC433E1 for ; Thu, 28 May 2020 08:26:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8D9AC208DB for ; Thu, 28 May 2020 08:26:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="NzywnR9e"; dkim=pass (1024-bit key) header.d=sharedspace.onmicrosoft.com header.i=@sharedspace.onmicrosoft.com header.b="bcd120Ee" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726860AbgE1I0u (ORCPT ); Thu, 28 May 2020 04:26:50 -0400 Received: from esa4.hgst.iphmx.com ([216.71.154.42]:30521 "EHLO esa4.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726955AbgE1I0t (ORCPT ); Thu, 28 May 2020 04:26:49 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1590654408; x=1622190408; h=from:to:cc:subject:date:message-id:references: content-transfer-encoding:mime-version; bh=E6YuUXbH+1eh0qCrp7GYmUjVHYfZSBHsgNZtuNW7PXc=; b=NzywnR9ezEgwbnOG0nj1kIOkhTYSaq9Ziz0Z/s4kpFi7iCqvIwzH86nx jKelvXENRwqDCtBhJ26KWZ119KnTnMxgJ5c0zb3X3WXI72aVH56plYOBZ CavNKs1ts2wB5xMhP34GtOGBf+0DqY+JPUNvAUTgZBudCh/qKqa5EJupr 5Izu5Appq57UD78TSR7NTzc1q9Zq96hPPE6GR6OS7XcX743qv/0P38ty5 jNBmY+dgmYP53uRm3XzlcybbwvsSrp0L5wEEcWddOUUO9yotXOZmWxA4A NuRheRJT8xP67IVwYAdp67sogWlAiAsWq8/P5qFgglysqWBc+N4gfWsNs g==; IronPort-SDR: YctvxTecx+QLNfUq2bJ4A/vX7ge9B86JaQkYS5tNJld/VySeJ95zxOdbrqwM7stSpsTnpzsvB9 UF+a3ADMHPAki8ZVRBoOAjLjZWV/11u1lL7JEOSO4zUQ9q/MnzWNGBmLz/twug2MjTxQasU6Vk V7V1XFIZiMXRxnNt9vrCdaIuSRrGssUBRqtZbe5pORXeVRMgOTtlCZql7yuS0uZBqqlfxDqvC/ M9pxb2AM/iFFcfn3kVUSOW8ARPrK0QGD5qQHqJnCHa8t9cZ8iPRuWswyq4BX8Kiu8YSQS6hWlV cQs= X-IronPort-AV: E=Sophos;i="5.73,444,1583164800"; d="scan'208";a="138687082" Received: from mail-dm6nam12lp2168.outbound.protection.outlook.com (HELO NAM12-DM6-obe.outbound.protection.outlook.com) ([104.47.59.168]) by ob1.hgst.iphmx.com with ESMTP; 28 May 2020 16:26:47 +0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=YadCABcx1sRPvPOQ+iWvs8l1t0Fj7YWAngttwkTj1DKw9XtFYsxM7McPomRydFZE7BDwL4pNg0p2kiyv116VMS814QZRa6CO8RBwXMM2r2fopZPXIfd5QUNHU3X3iKf7AO2tDoB51tfIrvCAA5vK6Jw2jYhsvJMLOB+YIcqCGY/NxDb1lUp3tWEo5BEdQAumWMbqTwZb8IOgD4+mzLpgzTg5ju17kKnz6ZvQcHrQJ3GMcxj9bhKLIuoaLTddZvGIXbpi2KHExkRqEAJBinTI5IkTZwHfEuFH1wsSaZYiYHyt4gsryFs4nwxILhYMRPan5e2y5M0jfzdtc/Qpw2nz5w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=L2lkjChe3EYmR9HYCWU6oJauhDhaaRkjmpxxMnv+irE=; b=H3j7Dbnjt2LlTdYtTTboXGId5Y301ooVsascixFzH8UpnHe9TBL5KbukqBi4rrFpLBP2fb0N2JYSXcv9ofjfAprnA9yar4oRKmq5pFhTbWjb3ajEjdLORAkfIyKdNRzWLDND4PfRjkeIW0XoHinQNr0NLTisENv8e84/bkbug5HT5GqMEmM5iCnD8aEmo3Qo+7J/zRcjLfq8kMFU2haZKMxGE7P5QeOC6I3gHkegGuc8eAK0l3CWv3E95+TKfnYr1tH4zjlakZD8dicDx0GGCVR+8FmIr8KWt2GzMfU0V2MUl0pfNrhSdJmIC5BWSADdrWZj9W/4rM6SLTYBEvNsxg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=wdc.com; dmarc=pass action=none header.from=wdc.com; dkim=pass header.d=wdc.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sharedspace.onmicrosoft.com; s=selector2-sharedspace-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=L2lkjChe3EYmR9HYCWU6oJauhDhaaRkjmpxxMnv+irE=; b=bcd120Ee0i9Fphdd2Fb3OJ51K7xO21oUtHEiVRE8jAmjgOcoC2vjdjeGOw2xc16g30Vuo6DMvRPmsvzJRLt8mhTzm83HkA7Bk90KBhWey02WNVc4JexpX7k2MvaKt21DqRSfM+lA0imaF/nfHeTjPtlisE9Gfkfeqi+lh9jF7t0= Received: from SN4PR0401MB3598.namprd04.prod.outlook.com (2603:10b6:803:47::21) by SN4PR0401MB3536.namprd04.prod.outlook.com (2603:10b6:803:47::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3045.17; Thu, 28 May 2020 08:26:45 +0000 Received: from SN4PR0401MB3598.namprd04.prod.outlook.com ([fe80::1447:186c:326e:30b2]) by SN4PR0401MB3598.namprd04.prod.outlook.com ([fe80::1447:186c:326e:30b2%7]) with mapi id 15.20.3021.030; Thu, 28 May 2020 08:26:45 +0000 From: Johannes Thumshirn To: Linus Walleij , "linux-block@vger.kernel.org" , Jens Axboe CC: "linux-mmc@vger.kernel.org" , "linux-mtd@lists.infradead.org" , Johannes Thumshirn , Christoph Hellwig , Ming Lei , Damien Le Moal , Paolo Valente Subject: Re: [PATCH] block: Flag elevators suitable for single queue Thread-Topic: [PATCH] block: Flag elevators suitable for single queue Thread-Index: AQHWNMezYzSAX16QAkK9TfQQ6T/8FQ== Date: Thu, 28 May 2020 08:26:44 +0000 Message-ID: References: <20200528081003.238804-1-linus.walleij@linaro.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: linaro.org; dkim=none (message not signed) header.d=none;linaro.org; dmarc=none action=none header.from=wdc.com; x-originating-ip: [129.253.240.72] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: c8ffc368-cb8c-45f2-6f03-08d802e0db6c x-ms-traffictypediagnostic: SN4PR0401MB3536: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:2958; x-forefront-prvs: 0417A3FFD2 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: kfi9lnl9KxkT0uCT2X6YdSZrGK//23CIA1fFxTIOVgA9Ue9zXZIYuYC4SyGThbKE0AngYCV0bQIr2FprRPaCwvQaVbf7+e1KOnhz13z9xwSsSdCJqEdV9ZpFRjquJOt4j4+lhnhpoyYYm2p6eqAcvf096qHTRZSICZHKSCRpdonTcXPqDoCWLW6EXdfOWR0u7ORSgPAs3H1uolx5LYaUZa9xJrO5fCUXt5rAq9E14XlosLZchJknbXe8LtQaUCGKwNl93i1Nf/w/g/2DydSYxDOhW9bJ5kkf9GILCuqdiYrXcAhWTegtIesuvQM5cn3yh7Q0YYmxFLpwg11pq3Fg1Q== x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN4PR0401MB3598.namprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(366004)(39860400002)(396003)(376002)(346002)(136003)(91956017)(55016002)(7696005)(478600001)(83380400001)(186003)(86362001)(71200400001)(8936002)(26005)(53546011)(6506007)(8676002)(66446008)(66476007)(64756008)(66556008)(66946007)(52536014)(9686003)(4326008)(316002)(54906003)(76116006)(33656002)(4744005)(2906002)(110136005)(5660300002);DIR:OUT;SFP:1102; x-ms-exchange-antispam-messagedata: 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 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: c8ffc368-cb8c-45f2-6f03-08d802e0db6c X-MS-Exchange-CrossTenant-originalarrivaltime: 28 May 2020 08:26:44.8242 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jkuZdUfIhco7k8r4YNQWju11SUkOI6eKadltjJIoDnaXIj5MHkQ3NT6uIAxe9+gmlfW4RojLcgxFC9CuBbl6+E6uaTageA16iphz5NuqUuk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN4PR0401MB3536 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 28/05/2020 10:12, Linus Walleij wrote:=0A= > diff --git a/block/mq-deadline.c b/block/mq-deadline.c=0A= > index b490f47fd553..324047add271 100644=0A= > --- a/block/mq-deadline.c=0A= > +++ b/block/mq-deadline.c=0A= > @@ -794,7 +794,8 @@ static struct elevator_type mq_deadline =3D {=0A= > .elevator_attrs =3D deadline_attrs,=0A= > .elevator_name =3D "mq-deadline",=0A= > .elevator_alias =3D "deadline",=0A= > - .elevator_features =3D ELEVATOR_F_ZBD_SEQ_WRITE,=0A= > + .elevator_features =3D ELEVATOR_F_ZBD_SEQ_WRITE |=0A= > + ELEVATOR_F_SINGLE_HW_QUEUE,=0A= =0A= That indentation looks a bit odd to me but for the general concept=0A= =0A= Reviewed-by: Johannes Thumshirn =0A= 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=-3.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,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 1E83FC433E0 for ; Thu, 28 May 2020 08:27:02 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id DF322208DB for ; Thu, 28 May 2020 08:27:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="SskrR91c"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=wdc.com header.i=@wdc.com header.b="VBWsJX9k"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sharedspace.onmicrosoft.com header.i=@sharedspace.onmicrosoft.com header.b="bcd120Ee" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DF322208DB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=wdc.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:Message-ID:Date :Subject:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=vrKfeX498FsySQU290AiPhVi2ABwXYKsQSUeHmZyg6Q=; b=SskrR91casXouP kOxs4j8f2BkPIIBh12t3JBwIhnMNnOLwiJ5cP7PtMeFq9U3nkkI+egOpRBjMWePhtDIWk+Bm/WjXS ++w1TlrnYMDXZRaRPl+WAFdk23rjUZvl0xCjdLbBbfo65ZniGIJvRHTp4JahizYskYQP9pQ2L+cVU AmvblNU9iS8ucofmumVWBUiEMzIJVd86b9XHLBg34d37kwTXUS43AwHjBq7PqXjeMUaJQeeFJ0L9G z+FO4TjYSxmjSlHyejfwaEGU5/X8sbynvxfEF8nHQGo954etC5OZXbdJIURSGuhmVe2sBQbJerp1F aOaj/zt1ueh2EbAuXMdw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jeDsM-0000fz-9v; Thu, 28 May 2020 08:26:54 +0000 Received: from esa4.hgst.iphmx.com ([216.71.154.42]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jeDsI-0000cY-IE for linux-mtd@lists.infradead.org; Thu, 28 May 2020 08:26:52 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1590654410; x=1622190410; h=from:to:cc:subject:date:message-id:references: content-transfer-encoding:mime-version; bh=E6YuUXbH+1eh0qCrp7GYmUjVHYfZSBHsgNZtuNW7PXc=; b=VBWsJX9km1Yqu9TA6QDUgfVFwjtqKHRiZL5p91NurtaysTdmhFjQfHtH R6Ki5wtNQZ7hVO0ALIcZ/j792pcRX5YSkeH0R1GWznS1JKIcTOPwNhg/9 YUy8hD7u7Fq5Vvn+PUSNV65cdxLGfgw/rQSbFv/eqntmqQdaHeoc324yu IWHHfTv7GYmayxwHdYpXuv+oPuzUDd5/nyeTmJ8l0g4Q9WBW5PqhEqQZs sz7u9HnEnVMrjfe1/vaMlPpOt+srHQYE7JT9bCAHBCTbdZvraN44UCyNO abdkCc6w9qMVo6YiXNQsAnSOtmwtSTe7wbSQCqil8JuVxTvDDDrKmr8Sx A==; IronPort-SDR: YctvxTecx+QLNfUq2bJ4A/vX7ge9B86JaQkYS5tNJld/VySeJ95zxOdbrqwM7stSpsTnpzsvB9 UF+a3ADMHPAki8ZVRBoOAjLjZWV/11u1lL7JEOSO4zUQ9q/MnzWNGBmLz/twug2MjTxQasU6Vk V7V1XFIZiMXRxnNt9vrCdaIuSRrGssUBRqtZbe5pORXeVRMgOTtlCZql7yuS0uZBqqlfxDqvC/ M9pxb2AM/iFFcfn3kVUSOW8ARPrK0QGD5qQHqJnCHa8t9cZ8iPRuWswyq4BX8Kiu8YSQS6hWlV cQs= X-IronPort-AV: E=Sophos;i="5.73,444,1583164800"; d="scan'208";a="138687082" Received: from mail-dm6nam12lp2168.outbound.protection.outlook.com (HELO NAM12-DM6-obe.outbound.protection.outlook.com) ([104.47.59.168]) by ob1.hgst.iphmx.com with ESMTP; 28 May 2020 16:26:47 +0800 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=YadCABcx1sRPvPOQ+iWvs8l1t0Fj7YWAngttwkTj1DKw9XtFYsxM7McPomRydFZE7BDwL4pNg0p2kiyv116VMS814QZRa6CO8RBwXMM2r2fopZPXIfd5QUNHU3X3iKf7AO2tDoB51tfIrvCAA5vK6Jw2jYhsvJMLOB+YIcqCGY/NxDb1lUp3tWEo5BEdQAumWMbqTwZb8IOgD4+mzLpgzTg5ju17kKnz6ZvQcHrQJ3GMcxj9bhKLIuoaLTddZvGIXbpi2KHExkRqEAJBinTI5IkTZwHfEuFH1wsSaZYiYHyt4gsryFs4nwxILhYMRPan5e2y5M0jfzdtc/Qpw2nz5w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=L2lkjChe3EYmR9HYCWU6oJauhDhaaRkjmpxxMnv+irE=; b=H3j7Dbnjt2LlTdYtTTboXGId5Y301ooVsascixFzH8UpnHe9TBL5KbukqBi4rrFpLBP2fb0N2JYSXcv9ofjfAprnA9yar4oRKmq5pFhTbWjb3ajEjdLORAkfIyKdNRzWLDND4PfRjkeIW0XoHinQNr0NLTisENv8e84/bkbug5HT5GqMEmM5iCnD8aEmo3Qo+7J/zRcjLfq8kMFU2haZKMxGE7P5QeOC6I3gHkegGuc8eAK0l3CWv3E95+TKfnYr1tH4zjlakZD8dicDx0GGCVR+8FmIr8KWt2GzMfU0V2MUl0pfNrhSdJmIC5BWSADdrWZj9W/4rM6SLTYBEvNsxg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=wdc.com; dmarc=pass action=none header.from=wdc.com; dkim=pass header.d=wdc.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sharedspace.onmicrosoft.com; s=selector2-sharedspace-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=L2lkjChe3EYmR9HYCWU6oJauhDhaaRkjmpxxMnv+irE=; b=bcd120Ee0i9Fphdd2Fb3OJ51K7xO21oUtHEiVRE8jAmjgOcoC2vjdjeGOw2xc16g30Vuo6DMvRPmsvzJRLt8mhTzm83HkA7Bk90KBhWey02WNVc4JexpX7k2MvaKt21DqRSfM+lA0imaF/nfHeTjPtlisE9Gfkfeqi+lh9jF7t0= Received: from SN4PR0401MB3598.namprd04.prod.outlook.com (2603:10b6:803:47::21) by SN4PR0401MB3536.namprd04.prod.outlook.com (2603:10b6:803:47::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3045.17; Thu, 28 May 2020 08:26:45 +0000 Received: from SN4PR0401MB3598.namprd04.prod.outlook.com ([fe80::1447:186c:326e:30b2]) by SN4PR0401MB3598.namprd04.prod.outlook.com ([fe80::1447:186c:326e:30b2%7]) with mapi id 15.20.3021.030; Thu, 28 May 2020 08:26:45 +0000 From: Johannes Thumshirn To: Linus Walleij , "linux-block@vger.kernel.org" , Jens Axboe Subject: Re: [PATCH] block: Flag elevators suitable for single queue Thread-Topic: [PATCH] block: Flag elevators suitable for single queue Thread-Index: AQHWNMezYzSAX16QAkK9TfQQ6T/8FQ== Date: Thu, 28 May 2020 08:26:44 +0000 Message-ID: References: <20200528081003.238804-1-linus.walleij@linaro.org> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: linaro.org; dkim=none (message not signed) header.d=none;linaro.org; dmarc=none action=none header.from=wdc.com; x-originating-ip: [129.253.240.72] x-ms-publictraffictype: Email x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: c8ffc368-cb8c-45f2-6f03-08d802e0db6c x-ms-traffictypediagnostic: SN4PR0401MB3536: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: wdcipoutbound: EOP-TRUE x-ms-oob-tlc-oobclassifiers: OLM:2958; x-forefront-prvs: 0417A3FFD2 x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: kfi9lnl9KxkT0uCT2X6YdSZrGK//23CIA1fFxTIOVgA9Ue9zXZIYuYC4SyGThbKE0AngYCV0bQIr2FprRPaCwvQaVbf7+e1KOnhz13z9xwSsSdCJqEdV9ZpFRjquJOt4j4+lhnhpoyYYm2p6eqAcvf096qHTRZSICZHKSCRpdonTcXPqDoCWLW6EXdfOWR0u7ORSgPAs3H1uolx5LYaUZa9xJrO5fCUXt5rAq9E14XlosLZchJknbXe8LtQaUCGKwNl93i1Nf/w/g/2DydSYxDOhW9bJ5kkf9GILCuqdiYrXcAhWTegtIesuvQM5cn3yh7Q0YYmxFLpwg11pq3Fg1Q== x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SN4PR0401MB3598.namprd04.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(366004)(39860400002)(396003)(376002)(346002)(136003)(91956017)(55016002)(7696005)(478600001)(83380400001)(186003)(86362001)(71200400001)(8936002)(26005)(53546011)(6506007)(8676002)(66446008)(66476007)(64756008)(66556008)(66946007)(52536014)(9686003)(4326008)(316002)(54906003)(76116006)(33656002)(4744005)(2906002)(110136005)(5660300002); DIR:OUT; SFP:1102; x-ms-exchange-antispam-messagedata: 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 MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-Network-Message-Id: c8ffc368-cb8c-45f2-6f03-08d802e0db6c X-MS-Exchange-CrossTenant-originalarrivaltime: 28 May 2020 08:26:44.8242 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: jkuZdUfIhco7k8r4YNQWju11SUkOI6eKadltjJIoDnaXIj5MHkQ3NT6uIAxe9+gmlfW4RojLcgxFC9CuBbl6+E6uaTageA16iphz5NuqUuk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN4PR0401MB3536 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200528_012650_722860_02EF2938 X-CRM114-Status: GOOD ( 10.74 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Damien Le Moal , Paolo Valente , "linux-mmc@vger.kernel.org" , Ming Lei , "linux-mtd@lists.infradead.org" , Johannes Thumshirn , Christoph Hellwig Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org On 28/05/2020 10:12, Linus Walleij wrote: > diff --git a/block/mq-deadline.c b/block/mq-deadline.c > index b490f47fd553..324047add271 100644 > --- a/block/mq-deadline.c > +++ b/block/mq-deadline.c > @@ -794,7 +794,8 @@ static struct elevator_type mq_deadline = { > .elevator_attrs = deadline_attrs, > .elevator_name = "mq-deadline", > .elevator_alias = "deadline", > - .elevator_features = ELEVATOR_F_ZBD_SEQ_WRITE, > + .elevator_features = ELEVATOR_F_ZBD_SEQ_WRITE | > + ELEVATOR_F_SINGLE_HW_QUEUE, That indentation looks a bit odd to me but for the general concept Reviewed-by: Johannes Thumshirn ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/