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Wed, 3 Aug 2022 09:48:08 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp1.samsung.com (KnoxPortal) with ESMTP id 20220803094808eusmtrp111d241cef0397c0689130cd7d8eb2553~HzLpAXxR92000320003eusmtrp1R; Wed, 3 Aug 2022 09:48:08 +0000 (GMT) X-AuditID: cbfec7f5-9c3ff7000000256c-14-62ea4458fe5e Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 94.9B.09038.7544AE26; Wed, 3 Aug 2022 10:48:07 +0100 (BST) Received: from localhost (unknown [106.210.248.112]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20220803094807eusmtip2c69438db6f11c983d60b36accf56cbb4~HzLosQXnL1679416794eusmtip2n; Wed, 3 Aug 2022 09:48:07 +0000 (GMT) From: Pankaj Raghav To: Johannes.Thumshirn@wdc.com, snitzer@kernel.org, axboe@kernel.dk, damien.lemoal@opensource.wdc.com, agk@redhat.com, hch@lst.de Cc: dm-devel@redhat.com, matias.bjorling@wdc.com, gost.dev@samsung.com, linux-kernel@vger.kernel.org, pankydev8@gmail.com, jaegeuk@kernel.org, hare@suse.de, linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, bvanassche@acm.org, Pankaj Raghav , Luis Chamberlain Subject: [PATCH v9 05/13] nvme: zns: Allow ZNS drives that have non-power_of_2 zone size Date: Wed, 3 Aug 2022 11:47:53 +0200 Message-Id: <20220803094801.177490-6-p.raghav@samsung.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220803094801.177490-1-p.raghav@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrGKsWRmVeSWpSXmKPExsWy7djPc7oRLq+SDFZu0LBYf+oYs8Xqu/1s FtM+/GS2+H32PLPF3nezWS1uHtjJZLFn0SQmi5WrjzJZPFk/i9nib9c9Jou9t7QtLu+aw2Yx f9lTdosJbV+ZLW5MeMpo8XlpC7vFmptPWSxO3JJ2EPK4fMXbY+esu+wel8+Wemxa1cnmsXlJ vcfumw1sHjtb77N6vN93lc2jb8sqRo/Np6s9Pm+S82g/0M0UwBPFZZOSmpNZllqkb5fAlbF5 /1b2gj6RiiOdk1kaGC8JdDFyckgImEjcOP6crYuRi0NIYAWjxIKDr1kgnC+MEv8m9jNDOJ8Z Jfa9bWOCadmybQEjRGI5o8TsVxtZIZyXjBKtmxcAtXBwsAloSTR2soPERQSaGSXu/u0BK2IW OMAkcXPLLbBRwgJREjvunWAGsVkEVCVOr5kCZvMKWElsvTCRHWKdvMTMS9/BbE4Ba4kp//5B 1QhKnJz5hAXEZgaqad46G+xWCYHtnBJ3l3SzQTS7SHxZuBJqkLDEq+NboGwZidOTe1gg7GqJ pzd+QzW3MEr071zPBvKCBNC2vjM5ICazgKbE+l36EOWOEotnzmCFqOCTuPFWEOIEPolJ26Yz Q4R5JTrahCCqlSR2/nwCtVRC4nLTHKilHhKXz35lm8CoOAvJM7OQPDMLYe8CRuZVjOKppcW5 6anFxnmp5XrFibnFpXnpesn5uZsYgUnx9L/jX3cwrnj1Ue8QIxMH4yFGCQ5mJRHeOy7Pk4R4 UxIrq1KL8uOLSnNSiw8xSnOwKInzJmduSBQSSE8sSc1OTS1ILYLJMnFwSjUwcfXt3pd77WJt 1Jk7hqvu9u2u6Ok/MnP+z9V3Dv+sSv+y55WR6eyH2y1Dzh7JTI/Y0rbva+gFJieWBFsbJnOR vqmG0x0y/kpwd5x63fRJ6MTOmIIP5cLOa411vuR91TzntpGPkbOuOP9GsvqferXUVZrCBzbs luGQ0Nwwvf+v+ZGWhpjz3ytdN5eqLkvb/lPlkOKp/f2PrcoyF9zfMGnNguc/lGyeKUWu2+tb Ll6hy9jpfo5Fa6pz8zdT+Y3TQkO2mBx84J/atfiA+99TrVfMVESzVDUnvoq+vbpA4bqNdUJU 96dtsqzi84yO/ufS4HL5d+/gOoudx2ZsWJHofPtzuSprlIWQzawZOlcMpifeU2Ipzkg01GIu Kk4EABdgS875AwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrKIsWRmVeSWpSXmKPExsVy+t/xe7rhLq+SDHavs7JYf+oYs8Xqu/1s FtM+/GS2+H32PLPF3nezWS1uHtjJZLFn0SQmi5WrjzJZPFk/i9nib9c9Jou9t7QtLu+aw2Yx f9lTdosJbV+ZLW5MeMpo8XlpC7vFmptPWSxO3JJ2EPK4fMXbY+esu+wel8+Wemxa1cnmsXlJ vcfumw1sHjtb77N6vN93lc2jb8sqRo/Np6s9Pm+S82g/0M0UwBOlZ1OUX1qSqpCRX1xiqxRt aGGkZ2hpoWdkYqlnaGwea2VkqqRvZ5OSmpNZllqkb5egl7F5/1b2gj6RiiOdk1kaGC8JdDFy ckgImEhs2baAsYuRi0NIYCmjxKTJC1kgEhIStxc2MULYwhJ/rnWxQRQ9Z5Q43/SfqYuRg4NN QEuisZMdJC4i0M0ocfnMOVYQh1ngHJPEnKcP2EC6hQUiJG7u+soOYrMIqEqcXjOFGcTmFbCS 2HphIjvEBnmJmZe+g9mcAtYSU/79A6sRAqpZ93cWK0S9oMTJmU/ArmMGqm/eOpt5AqPALCSp WUhSCxiZVjGKpJYW56bnFhvpFSfmFpfmpesl5+duYgTG77ZjP7fsYFz56qPeIUYmDsZDjBIc zEoivHdcnicJ8aYkVlalFuXHF5XmpBYfYjQFunsis5Rocj4wgeSVxBuaGZgamphZGphamhkr ifN6FnQkCgmkJ5akZqemFqQWwfQxcXBKNTAl+sp25f3lqDz+RSuO29Y9z3DFlsNdmnpzghR/ F1u98So+PoH7yo6M2jKWeQK5ObMXsFZx1lYx+BeIBRQZOqvne3LM+6i6iTUtk+H5LqYIhv+z JV4qfeWwiNSzn3VH77SJRFTou/j0+PvPrj6SsuF8UqPwKPZ52EPnZJP0KysSPTyj8qbxXO/5 /6kg8PYqxXO5uoFtu+UZz04Oit02zWqGd9W/+Xuj03kn3UrVmzpX9I3LSc79u/qjozhsdq8t WdL/me1q0epZK7Sac+/kXnr4Z47V7b8cRXNsGrw0kmZIrN6p8j6Z1WRjyvujqQbLL/ntiFjk PEPlkM1emaiyxvmM3s9Ld245VdHvFXjSSYmlOCPRUIu5qDgRAAllp1doAwAA X-CMS-MailID: 20220803094808eucas1p1a6a800161d32fe4242d39e669e5f3527 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20220803094808eucas1p1a6a800161d32fe4242d39e669e5f3527 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20220803094808eucas1p1a6a800161d32fe4242d39e669e5f3527 References: <20220803094801.177490-1-p.raghav@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remove the condition which disallows non-power_of_2 zone size ZNS drive to be updated and use generic method to calculate number of zones instead of relying on log and shift based calculation on zone size. The power_of_2 calculation has been replaced directly with generic calculation without special handling. Both modified functions are not used in hot paths, they are only used during initialization & revalidation of the ZNS device. As rounddown macro from math.h does not work for 32 bit architectures, round down operation is open coded. Reviewed-by: Luis Chamberlain Reviewed by: Adam Manzanares Reviewed-by: Hannes Reinecke Signed-off-by: Pankaj Raghav --- drivers/nvme/host/zns.c | 16 +++++++--------- 1 file changed, 7 insertions(+), 9 deletions(-) diff --git a/drivers/nvme/host/zns.c b/drivers/nvme/host/zns.c index 12316ab51bda..73e4ad495ae8 100644 --- a/drivers/nvme/host/zns.c +++ b/drivers/nvme/host/zns.c @@ -101,13 +101,6 @@ int nvme_update_zone_info(struct nvme_ns *ns, unsigned lbaf) } ns->zsze = nvme_lba_to_sect(ns, le64_to_cpu(id->lbafe[lbaf].zsze)); - if (!is_power_of_2(ns->zsze)) { - dev_warn(ns->ctrl->device, - "invalid zone size:%llu for namespace:%u\n", - ns->zsze, ns->head->ns_id); - status = -ENODEV; - goto free_data; - } disk_set_zoned(ns->disk, BLK_ZONED_HM); blk_queue_flag_set(QUEUE_FLAG_ZONE_RESETALL, q); @@ -129,7 +122,7 @@ static void *nvme_zns_alloc_report_buffer(struct nvme_ns *ns, sizeof(struct nvme_zone_descriptor); nr_zones = min_t(unsigned int, nr_zones, - get_capacity(ns->disk) >> ilog2(ns->zsze)); + div64_u64(get_capacity(ns->disk), ns->zsze)); bufsize = sizeof(struct nvme_zone_report) + nr_zones * sizeof(struct nvme_zone_descriptor); @@ -182,6 +175,7 @@ int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector, int ret, zone_idx = 0; unsigned int nz, i; size_t buflen; + u64 remainder = 0; if (ns->head->ids.csi != NVME_CSI_ZNS) return -EINVAL; @@ -197,7 +191,11 @@ int nvme_ns_report_zones(struct nvme_ns *ns, sector_t sector, c.zmr.zrasf = NVME_ZRASF_ZONE_REPORT_ALL; c.zmr.pr = NVME_REPORT_ZONE_PARTIAL; - sector &= ~(ns->zsze - 1); + /* + * Round down the sector value to the nearest zone start + */ + div64_u64_rem(sector, ns->zsze, &remainder); + sector -= remainder; while (zone_idx < nr_zones && sector < get_capacity(ns->disk)) { memset(report, 0, buflen); -- 2.25.1