From patchwork Wed Apr 27 16:02:55 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pankaj Raghav X-Patchwork-Id: 12829087 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 4AF7CC43219 for ; Wed, 27 Apr 2022 16:06:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241425AbiD0QJ6 (ORCPT ); Wed, 27 Apr 2022 12:09:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52452 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241864AbiD0QHc (ORCPT ); Wed, 27 Apr 2022 12:07:32 -0400 Received: from mailout2.w1.samsung.com (mailout2.w1.samsung.com [210.118.77.12]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8E6FD3D6CE3 for ; Wed, 27 Apr 2022 09:03:24 -0700 (PDT) Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20220427160315euoutp020ea2e892d2737832613f364288934aa8~pzFL_cr8L1615616156euoutp02Z for ; 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Wed, 27 Apr 2022 16:03:13 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220427160313eusmtrp2cea78a3137da11659e89a20f8b5be479~pzFJ_NFx82598325983eusmtrp2p; Wed, 27 Apr 2022 16:03:13 +0000 (GMT) X-AuditID: cbfec7f2-e7fff70000002719-93-62696941346b Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 5E.81.09522.04969626; Wed, 27 Apr 2022 17:03:12 +0100 (BST) Received: from localhost (unknown [106.210.248.162]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220427160312eusmtip1ae2f42acfa009ab15e75927ef0532d22~pzFJnZ99a1317113171eusmtip1M; Wed, 27 Apr 2022 16:03:12 +0000 (GMT) From: Pankaj Raghav To: jaegeuk@kernel.org, axboe@kernel.dk, snitzer@kernel.org, hch@lst.de, mcgrof@kernel.org, naohiro.aota@wdc.com, sagi@grimberg.me, damien.lemoal@opensource.wdc.com, dsterba@suse.com, johannes.thumshirn@wdc.com Cc: linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, clm@fb.com, gost.dev@samsung.com, chao@kernel.org, linux-f2fs-devel@lists.sourceforge.net, josef@toxicpanda.com, jonathan.derrick@linux.dev, agk@redhat.com, kbusch@kernel.org, kch@nvidia.com, linux-nvme@lists.infradead.org, dm-devel@redhat.com, bvanassche@acm.org, jiangbo.365@bytedance.com, linux-fsdevel@vger.kernel.org, matias.bjorling@wdc.com, linux-block@vger.kernel.org, Pankaj Raghav Subject: [PATCH 16/16] dm-zoned: ensure only power of 2 zone sizes are allowed Date: Wed, 27 Apr 2022 18:02:55 +0200 Message-Id: <20220427160255.300418-17-p.raghav@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220427160255.300418-1-p.raghav@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02Se0xTVxzHc+69vb3tVrgUI2e1Y1pn5tDx2Ng8CQtItmRXpwvGLTJxj4J3 hQ0KawEH/kF5jGHdpJDgRoEIhJcULJROKRUFlllQCYS3JOJwsEU6XrZqUWFruZj53+f3O5/f +Z5fcihc3ExKqARlKqtSyhNlpJC4eG1l4I3IhITY4Mc1UmS8fg1HhtuFJDq7tIKjGyX9GCou /IWPnvQP4KhzoYyHBl3ZGLrVZcHQecPvGJox6nH0Y9cSgVa1U+5e3jSOnk6HoOKeMYBmR/UY 6pzchYb+bOCjoeoP0OXOPgINd5ST6FzdLB/p8h/gaEI3C1CRrY2HHLV5fHTBvkig3skte19m hkc+ZNZ6m0imKHeBzwxMtRLMcH8aY2o8RTJVmhKcaavJYqyVDoyx3tKQzE+5CyRj+f4Oj1m8 MkoyZ8yNgDGaRwlG19bKixIfFb57nE1MSGdVQeFfCuPryoxEyrzgu0sFDzENyKO0QEBBOhTa SisJLRBSYroBQPu4nccVTgDbR+oxrnAA+EPjIHg2Ml1TtzFSD+BvRZb1AzF9D8A5p1ILKIqk A2D2Kb7H2URPAFjU0rJ+E07P4XDQPI55BnzpKPhHdf46E/QO6Bpq4nlYRIfB5SUXyaW9AkuH HvE9lwrcfd39aE7xgX2lM4SHcbeS+2sZzum1Qthu9+H4fdhgG+Nz7AvnbOYNlsJ/Lecwjk/C 2YknuOdtkM4DsNBiJD1Z0J115maiB3H6dWjsCOL0SPjXdQfGGV5wYt6He4EXLL74M861RbAg X8zZMmhZmdkIhXA4p5zgFAZe1r2jA9v0z62if24V/f+xlQBvBH5smjpJwapDlOyJQLU8SZ2m VATGJSeZgPtH31iz3W8HFXPLgT0Ao0APgBQu2yRyWuNjxaLj8oxMVpX8hSotkVX3gC0UIfMT xSW0yMW0Qp7KfsOyKazq2SlGCSQa7Jh3Lf1S5NhK+af1wuj0Kv+srpgLV2JPRGdcOhauurcv Y+shA89bMGhojWiLPuJUEgFd+49Id2pHMr3uvnZwsysn5p895x9L3+KFer25q2nRdNuQ0lKd vtk389Cib+DuCeeL3acP7ow5/HXEV93DyhrF4ZAK6tHRSWnHAe+n+7P7pmxT1u4X/Bci4+6o k3M+X9B+RFRJVicfzMsVMyaXJHxv8dVtwj6rYfuy78c7RpAWCwt+uEfhqDLFBDVkn/b7NnZR 39wqk7+3dTUr6TNBlKRkjfcq1bzvb7s2dcnsH3Gy0REWerVA8HbsJ7kH7vJ2a3pzyWDnzbLt FVnN5vHx/HmTVCcj1PHykABcpZb/B7EFCq9ABAAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprHKsWRmVeSWpSXmKPExsVy+t/xu7oOmZlJBn+mW1usP3WM2WL13X42 i2kffjJbnJ56lsliUv8MdovfZ88zW+x9N5vV4sKPRiaLmwd2MlmsXH2UyeLJ+lnMFj0HPrBY /O26BxRrechs8eehocWkQ9cYLZ5encVksfeWtsWlxyvYLS4tcrfYs/cki8XlXXPYLOYve8pu MaHtK7PFjQlPGS0mHt/MavF5aQu7xbrX71ksTtySdpD1uHzF2+PfiTVsHhOb37F7nL+3kcXj 8tlSj02rOtk8FjZMZfbYvKTeY/eCz0weu282sHn0Nr9j89jZep/V4/2+q2wefVtWMXqs33KV xWPC5o2sAUJRejZF+aUlqQoZ+cUltkrRhhZGeoaWFnpGJpZ6hsbmsVZGpkr6djYpqTmZZalF +nYJehnLZq9nKXjLWbG94xtTA2MLRxcjJ4eEgInEwyXLWLoYuTiEBJYySmxYMJEdIiEhcXth EyOELSzx51oXG4gtJPCcUeLhKrUuRg4ONgEticZOdpBeEYEnjBL3fz4GG8Qs0MAicWviLiaQ BmEBP4mn+2+DDWIRUJX4cWkNK4jNK2At8fHDDzaIBfISMy99ZwcZygkUn/ApAmKXlUT3oltQ 5YISJ2c+YQGxmYHKm7fOZp7AKDALSWoWktQCRqZVjCKppcW56bnFhnrFibnFpXnpesn5uZsY gQll27Gfm3cwznv1Ue8QIxMH4yFGCQ5mJRHeL7szkoR4UxIrq1KL8uOLSnNSiw8xmgKdPZFZ SjQ5H5jS8kriDc0MTA1NzCwNTC3NjJXEeT0LOhKFBNITS1KzU1MLUotg+pg4OKUamOoNztk7 676Vqz9ou6rw0tv1akJitqWbtj5JydrfKbNS7pTm13VZmWtnX80QzUgviwhx+f3njLLFRY4H jus3m76TDZhgq6r+UPdQkuSxF7I3Zcwf3M17EnTt2zJPO9mQLFPZw3oZlwr7ZVi6uDnXvMs2 Wxa0IffyTJUuqaayzraXsiaq269fZ/inmPLOu8n/eTr7t097n/vxftx9T0v1LJf242WN58+m SjQ7Nd7scpjsoOQ7WZ9dwfHHeqO3cY1nzVYZ5T+dK6I3ycX+YP08SYNW7d7iz4xzeOabMp/t jprluMSX1+T2XuHk96+iPz+a3B5yquyNt/+Xusthrvxz76zynMgj9TUtJHbX1z1NSizFGYmG WsxFxYkA506w3bEDAAA= X-CMS-MailID: 20220427160313eucas1p1feecf74ec15c8c3d9250444710fd1676 X-Msg-Generator: CA X-RootMTR: 20220427160313eucas1p1feecf74ec15c8c3d9250444710fd1676 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20220427160313eucas1p1feecf74ec15c8c3d9250444710fd1676 References: <20220427160255.300418-1-p.raghav@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org From: Luis Chamberlain Today dm-zoned relies on the assumption that you have a zone size with a power of 2. Even though the block layer today enforces this requirement, these devices do exist and so provide a stop-gap measure to ensure these devices cannot be used by mistake Signed-off-by: Luis Chamberlain Signed-off-by: Pankaj Raghav Reviewed-by: Hannes Reinecke --- drivers/md/dm-zone.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c index 57daa86c19cf..221e0aa0f1a7 100644 --- a/drivers/md/dm-zone.c +++ b/drivers/md/dm-zone.c @@ -231,6 +231,18 @@ static int dm_revalidate_zones(struct mapped_device *md, struct dm_table *t) struct request_queue *q = md->queue; unsigned int noio_flag; int ret; + struct block_device *bdev = md->disk->part0; + sector_t zone_sectors; + char bname[BDEVNAME_SIZE]; + + zone_sectors = bdev_zone_sectors(bdev); + + if (!is_power_of_2(zone_sectors)) { + DMWARN("%s: %s only power of two zone size supported\n", + dm_device_name(md), + bdevname(bdev, bname)); + return 1; + } /* * Check if something changed. If yes, cleanup the current resources