From patchwork Fri Sep 23 17:36:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Raghav X-Patchwork-Id: 12986842 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 33716C04A95 for ; Fri, 23 Sep 2022 17:37:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232316AbiIWRhG (ORCPT ); Fri, 23 Sep 2022 13:37:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54922 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232216AbiIWRgw (ORCPT ); Fri, 23 Sep 2022 13:36:52 -0400 Received: from mailout2.w1.samsung.com (mailout2.w1.samsung.com [210.118.77.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9079614D328 for ; Fri, 23 Sep 2022 10:36:32 -0700 (PDT) Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20220923173631euoutp02a924b651dcfaf0c9105401ff44624fc0~XjeJxmCrd2792727927euoutp029 for ; 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Fri, 23 Sep 2022 17:36:28 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220923173628eusmtrp284d8470063727d7d00d16705db25226b~XjeHcIpBM1023410234eusmtrp28; Fri, 23 Sep 2022 17:36:28 +0000 (GMT) X-AuditID: cbfec7f4-8abff70000011e89-38-632dee9d21a9 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 69.5F.10862.C9EED236; Fri, 23 Sep 2022 18:36:28 +0100 (BST) Received: from localhost (unknown [106.210.248.168]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20220923173628eusmtip22a852fb35c4b3f403d76af36b71e56e1~XjeHE23u92337923379eusmtip2d; Fri, 23 Sep 2022 17:36:28 +0000 (GMT) From: Pankaj Raghav To: snitzer@kernel.org, axboe@kernel.dk, agk@redhat.com, hch@lst.de, damien.lemoal@opensource.wdc.com Cc: jaegeuk@kernel.org, gost.dev@samsung.com, bvanassche@acm.org, linux-kernel@vger.kernel.org, hare@suse.de, matias.bjorling@wdc.com, Johannes.Thumshirn@wdc.com, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, pankydev8@gmail.com, dm-devel@redhat.com, Luis Chamberlain , Johannes Thumshirn , Pankaj Raghav Subject: [PATCH v15 08/13] dm-zoned: ensure only power of 2 zone sizes are allowed Date: Fri, 23 Sep 2022 19:36:13 +0200 Message-Id: <20220923173618.6899-9-p.raghav@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220923173618.6899-1-p.raghav@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrEKsWRmVeSWpSXmKPExsWy7djPc7pz3+kmG7zrYbVYf+oYs8Xqu/1s FtM+/GS2+H32PLPF3nezWS1uHtjJZLFn0SQmi5WrjzJZPFk/i9nib9c9Jou9t7QtLu+aw2Yx f9lTdosJbV+ZLW5MeMpo8XlpC7vFmptPWSxO3JJ2EPK4fMXbY+esu+wel8+Wemxa1cnmsXlJ vcfumw1sHjtb77N6vN93lc2jb8sqRo/Np6s9Pm+S82g/0M0UwBPFZZOSmpNZllqkb5fAlXGh dSZLwX7eivU3lzM1ME7l7mLk5JAQMJG4sOw9WxcjF4eQwApGicMPlkM5Xxglll49BuV8ZpTY ffgQE0zLrxlvWSESyxklLr07xgqSEBJ4ySixeLtYFyMHB5uAlkRjJztIWEQgXeL41pvsIPXM Av3MEp9nvGUBSQgLhEi83fsebCiLgKrEwW3vwBp4BSwkpq/7ygixTF5i5qXv7CAzOQUsJfob ayBKBCVOznwCNoYZqKR562xmkPkSAps5Je5t3gdWLyHgIrFmOtQYYYlXx7ewQ9gyEv93zof6 pVri6Y3fUL0tjBL9O9ezQfRaS/SdyQExmQU0Jdbv0ocod5R49+AZM0QFn8SNt4IQF/BJTNo2 HSrMK9HRJgRRrSSx8+cTqKUSEpeb5rBA2B4SLQ9ms01gVJyF5JdZSH6ZhbB3ASPzKkbx1NLi 3PTUYqO81HK94sTc4tK8dL3k/NxNjMBkePrf8S87GJe/+qh3iJGJg/EQowQHs5IIb8pF3WQh 3pTEyqrUovz4otKc1OJDjNIcLErivGwztJKFBNITS1KzU1MLUotgskwcnFINTDaXLkxplj6W YV4azZl//3LTh2eaH28Uyh3W8DnUHqJgz7/iV8uxXKveivpdLYyTCh4G3Sme+M/pkc8Tn1fn hCI3cX0+fv2bokrDcW2Z7WuO/d19WPf9QrlXUxzNBCftLcjJlCw4lcJeU8C5MV1ua1bsRpUZ lzu2c1VtWeJmXcf4djnTtdm6rHkpdwO0JzbwNuur2c+rMFHMbFvbfStvbvuMCwsebeZdu0Vo re4jl/7N7wv3Nt/l+b62TPCcJ6sex237O2X3F5sHPxZ7Jrnl5nm3O6yyD5r3qSzsObuQ9ZT/ LZfemwwbGhafU7k+6RaLeGD0RtaDl34FWUueOp554rTW8j0v9c/pWEeZbMmIMlRiKc5INNRi LipOBADhCLR59QMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrEIsWRmVeSWpSXmKPExsVy+t/xe7pz3ukmG0x6IWOx/tQxZovVd/vZ LKZ9+Mls8fvseWaLve9ms1rcPLCTyWLPoklMFitXH2WyeLJ+FrPF3657TBZ7b2lbXN41h81i /rKn7BYT2r4yW9yY8JTR4vPSFnaLNTefslicuCXtIORx+Yq3x85Zd9k9Lp8t9di0qpPNY/OS eo/dNxvYPHa23mf1eL/vKptH35ZVjB6bT1d7fN4k59F+oJspgCdKz6Yov7QkVSEjv7jEVina 0MJIz9DSQs/IxFLP0Ng81srIVEnfziYlNSezLLVI3y5BL+NC60yWgv28FetvLmdqYJzK3cXI ySEhYCLxa8Zb1i5GLg4hgaWMEk3r3zFBJCQkbi9sYoSwhSX+XOtigyh6zijxsvMCexcjBweb gJZEYyc7SI2IQK7EsbX3WEFsZoH5zBLHV/uB2MICQRINp0+xgdgsAqoSB7e9A6vnFbCQmL7u K9R8eYmZl76DjeQUsJTob6wBCQsBlZxf/AiqXFDi5MwnLBDj5SWat85mnsAoMAtJahaS1AJG plWMIqmlxbnpucVGesWJucWleel6yfm5mxiBkbvt2M8tOxhXvvqod4iRiYPxEKMEB7OSCG/K Rd1kId6UxMqq1KL8+KLSnNTiQ4ymQGdPZJYSTc4Hpo68knhDMwNTQxMzSwNTSzNjJXFez4KO RCGB9MSS1OzU1ILUIpg+Jg5OqQamsqI/x+4m/pP2V7s/cX2Xsc5speW/9n7u2C9bai2i82ey aaj9hMOnpFVfXj737Jmr0Y3MiiCVl+sEOdf5T3i/UO7Z1BUSOtYNvtY5a+x0YuRXZl6L+bSC N/SffG4jr7m8zkLJY9GT4sIzu56+uiTroFmvGbbd+9lkhyu2E5o+n4nebr6asYvLlb35zyb1 fzUTN5YeelQsLuZdtFnvgYmEQodz0lPGMqnbcd71q0TfX4oL4j+5I0X1a0qDquvX4upChw2t pz5yrHbsbf9y7tmHmWoHDr/Zo/HURSvG0isvI6FdtOxDSnvX7es/QuIb5tYHyHtpLr3Yczfm 8NFvuuX+D7pL/rVd2xsdKqJauV+JpTgj0VCLuag4EQD/43E5ZQMAAA== X-CMS-MailID: 20220923173628eucas1p1837557826439e7cd6690b46628290037 X-Msg-Generator: CA X-RootMTR: 20220923173628eucas1p1837557826439e7cd6690b46628290037 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20220923173628eucas1p1837557826439e7cd6690b46628290037 References: <20220923173618.6899-1-p.raghav@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org From: Luis Chamberlain dm-zoned relies on the assumption that the zone size is a power-of-2(po2) and the zone capacity is same as the zone size. Ensure only po2 devices can be used as dm-zoned target until a native support for zoned devices with non-po2 zone size is added. Reviewed-by: Hannes Reinecke Reviewed-by: Damien Le Moal Reviewed-by: Bart Van Assche Reviewed-by: Mike Snitzer Reviewed-by: Johannes Thumshirn Signed-off-by: Luis Chamberlain Signed-off-by: Pankaj Raghav --- drivers/md/dm-zoned-target.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/md/dm-zoned-target.c b/drivers/md/dm-zoned-target.c index 95b132b52f33..9325bf5dee81 100644 --- a/drivers/md/dm-zoned-target.c +++ b/drivers/md/dm-zoned-target.c @@ -792,6 +792,10 @@ static int dmz_fixup_devices(struct dm_target *ti) return -EINVAL; } zone_nr_sectors = bdev_zone_sectors(bdev); + if (!is_power_of_2(zone_nr_sectors)) { + ti->error = "Zone size is not a power-of-2 number of sectors"; + return -EINVAL; + } zoned_dev->zone_nr_sectors = zone_nr_sectors; zoned_dev->nr_zones = bdev_nr_zones(bdev); } @@ -804,6 +808,10 @@ static int dmz_fixup_devices(struct dm_target *ti) return -EINVAL; } zoned_dev->zone_nr_sectors = bdev_zone_sectors(bdev); + if (!is_power_of_2(zoned_dev->zone_nr_sectors)) { + ti->error = "Zone size is not a power-of-2 number of sectors"; + return -EINVAL; + } zoned_dev->nr_zones = bdev_nr_zones(bdev); }