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=-16.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,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 07099C63777 for ; Mon, 30 Nov 2020 07:56:22 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 8CB2A20679 for ; Mon, 30 Nov 2020 07:56:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="e1Mwtm7E" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8CB2A20679 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Type: Content-Transfer-Encoding:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=PwwCNUmRA3dEBxquPEZpPdS8pgV7c2jqjTCYo+ZToxs=; b=e1Mwtm7EGuo4BVLIxnGyZ+40m 6ZCgJuc587w0GmSSAjzjtEdjC/oqSAJ0eUF52qjyil/9y/w5UYCC6ncCnVR2Ror7YtndcZ1Dw/nVJ CKsbNoWTeExb556+3PLruvRkarYxj+JInOlr+gkGRq8RuV/weOLgrad5YWgMuyOgEFs/eLdbL6lYk aqD5VjY/4G1Gr5ViWqMQ5YNVARJ5/zsawQTWSIrKdyaYh4rklhOEMq44K7MpaWpwPuHeHxERy5TrQ iSRnjaJ9ayqSlvfvp8rOyTvY2kXLUDyHiZxlZmOEmAgTNFSScgYqUattZNfbpfrGNsWJXzXuY9jj4 ZG+fKErdw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kje2e-0005lx-HH; Mon, 30 Nov 2020 07:56:12 +0000 Received: from mx2.suse.de ([195.135.220.15]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kje2O-0005fT-SN for linux-nvme@lists.infradead.org; Mon, 30 Nov 2020 07:56:10 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id CF14DAD09; Mon, 30 Nov 2020 07:55:55 +0000 (UTC) Subject: Re: [PATCH 1/4] block: add a hard-readonly flag to struct gendisk To: Christoph Hellwig , Jens Axboe References: <20201129181926.897775-1-hch@lst.de> <20201129181926.897775-2-hch@lst.de> From: Hannes Reinecke Message-ID: Date: Mon, 30 Nov 2020 08:55:54 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: <20201129181926.897775-2-hch@lst.de> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20201130_025557_075563_BAFC2A1C X-CRM114-Status: GOOD ( 28.67 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sagi Grimberg , Mike Snitzer , Oleksii Kurochko , Dongsheng Yang , linux-block@vger.kernel.org, dm-devel@redhat.com, linux-nvme@lists.infradead.org, "Martin K . Petersen" , Ilya Dryomov , ceph-devel@vger.kernel.org Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org T24gMTEvMjkvMjAgNzoxOSBQTSwgQ2hyaXN0b3BoIEhlbGx3aWcgd3JvdGU6Cj4gQ29tbWl0IDIw YmQxZDAyNmFhYyAoInNjc2k6IHNkOiBLZWVwIGRpc2sgcmVhZC1vbmx5IHdoZW4gcmUtcmVhZGlu Zwo+IHBhcnRpdGlvbiIpIGFkZHJlc3NlZCBhIGxvbmctc3RhbmRpbmcgcHJvYmxlbSB3aXRoIHVz ZXIgcmVhZC1vbmx5Cj4gcG9saWN5IGJlaW5nIG92ZXJyaWRkZW4gYXMgYSByZXN1bHQgb2YgYSBk ZXZpY2UtaW5pdGlhdGVkIHJldmFsaWRhdGUuCj4gVGhlIGNvbW1pdCBoYXMgc2luY2UgYmVlbiBy ZXZlcnRlZCBkdWUgdG8gYSByZWdyZXNzaW9uIHRoYXQgbGVmdCBzb21lCj4gVVNCIGRldmljZXMg cmVhZC1vbmx5IGluZGVmaW5pdGVseS4KPiAKPiBUbyBmaXggdGhlIHVuZGVybHlpbmcgcHJvYmxl bXMgd2l0aCByZXZhbGlkYXRlIHdlIG5lZWQgdG8ga2VlcCB0cmFjawo+IG9mIGhhcmR3YXJlIHN0 YXRlIGFuZCB1c2VyIHBvbGljeSBzZXBhcmF0ZWx5Lgo+IAo+IFRoZSBnZW5kaXNrIGhhcyBiZWVu IHVwZGF0ZWQgdG8gcmVmbGVjdCB0aGUgY3VycmVudCBoYXJkd2FyZSBzdGF0ZSBzZXQKPiBieSB0 aGUgZGV2aWNlIGRyaXZlci4gVGhpcyBpcyBkb25lIHRvIGFsbG93IHJldHVybmluZyB0aGUgZGV2 aWNlIHRvCj4gdGhlIGhhcmR3YXJlIHN0YXRlIG9uY2UgdGhlIHVzZXIgY2xlYXJzIHRoZSBCTEtS T1NFVCBmbGFnLgo+IAo+IFRoZSByZXN1bHRpbmcgc2VtYW50aWNzIGFyZSBhcyBmb2xsb3dzOgo+ IAo+ICAgLSBJZiBCTEtST1NFVCBpcyB1c2VkIHRvIHNldCBhIHdob2xlLWRpc2sgZGV2aWNlIHJl YWQtb25seSwgYW55Cj4gICAgIHBhcnRpdGlvbnMgd2lsbCBlbmQgdXAgaW4gYSByZWFkLW9ubHkg c3RhdGUgdW50aWwgdGhlIHVzZXIKPiAgICAgZXhwbGljaXRseSBjbGVhcnMgdGhlIGZsYWcuCj4g Cj4gICAtIElmIEJMS1JPU0VUIHNldHMgYSBnaXZlbiBwYXJ0aXRpb24gcmVhZC1vbmx5LCB0aGF0 IHBhcnRpdGlvbiB3aWxsCj4gICAgIHJlbWFpbiByZWFkLW9ubHkgZXZlbiBpZiB0aGUgdW5kZXJs eWluZyBzdG9yYWdlIHN0YWNrIGluaXRpYXRlcyBhCj4gICAgIHJldmFsaWRhdGUuIEhvd2V2ZXIs IHRoZSBCTEtSUlBBUlQgaW9jdGwgd2lsbCBjYXVzZSB0aGUgcGFydGl0aW9uCj4gICAgIHRhYmxl IHRvIGJlIGRyb3BwZWQgYW5kIGFueSB1c2VyIHBvbGljeSBvbiBwYXJ0aXRpb25zIHdpbGwgYmUg bG9zdC4KPiAKPiAgIC0gSWYgQkxLUk9TRVQgaGFzIG5vdCBiZWVuIHNldCwgYm90aCB0aGUgd2hv bGUgZGlzayBkZXZpY2UgYW5kIGFueQo+ICAgICBwYXJ0aXRpb25zIHdpbGwgcmVmbGVjdCB0aGUg Y3VycmVudCB3cml0ZS1wcm90ZWN0IHN0YXRlIG9mIHRoZQo+ICAgICB1bmRlcmx5aW5nIGRldmlj ZS4KPiAKPiBCYXNlZCBvbiBhIHBhdGNoIGZyb20gTWFydGluIEsuIFBldGVyc2VuIDxtYXJ0aW4u cGV0ZXJzZW5Ab3JhY2xlLmNvbT4uCj4gCj4gUmVwb3J0ZWQtYnk6IE9sZWtzaWkgS3Vyb2Noa28g PG9sa3Vyb2NoQGNpc2NvLmNvbT4KPiBCdWd6aWxsYTogaHR0cHM6Ly9idWd6aWxsYS5rZXJuZWwu b3JnL3Nob3dfYnVnLmNnaT9pZD0yMDEyMjEKPiBTaWduZWQtb2ZmLWJ5OiBDaHJpc3RvcGggSGVs bHdpZyA8aGNoQGxzdC5kZT4KPiAtLS0KPiAgIGJsb2NrL2Jsay1jb3JlLmMgICAgICAgIHwgIDIg Ky0KPiAgIGJsb2NrL2dlbmhkLmMgICAgICAgICAgIHwgMzQgKysrKysrKysrKysrKysrKysrKy0t LS0tLS0tLS0tLS0tLQo+ICAgYmxvY2svcGFydGl0aW9ucy9jb3JlLmMgfCAgMyArLS0KPiAgIGlu Y2x1ZGUvbGludXgvZ2VuaGQuaCAgIHwgIDYgKysrKy0tCj4gICA0IGZpbGVzIGNoYW5nZWQsIDI1 IGluc2VydGlvbnMoKyksIDIwIGRlbGV0aW9ucygtKQo+IApSZXZpZXdlZC1ieTogSGFubmVzIFJl aW5lY2tlIDxoYXJlQHN1c2UuZGU+CgpDaGVlcnMsCgpIYW5uZXMKLS0gCkRyLiBIYW5uZXMgUmVp bmVja2UgICAgICAgICAgICAgICAgS2VybmVsIFN0b3JhZ2UgQXJjaGl0ZWN0CmhhcmVAc3VzZS5k ZSAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICs0OSA5MTEgNzQwNTMgNjg4ClNVU0UgU29m dHdhcmUgU29sdXRpb25zIEdtYkgsIE1heGZlbGRzdHIuIDUsIDkwNDA5IE7DvHJuYmVyZwpIUkIg MzY4MDkgKEFHIE7DvHJuYmVyZyksIEdlc2Now6RmdHNmw7xocmVyOiBGZWxpeCBJbWVuZMO2cmZm ZXIKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4 LW52bWUgbWFpbGluZyBsaXN0CkxpbnV4LW52bWVAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8v bGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW52bWUK