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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04E22C6FA93 for ; Fri, 23 Sep 2022 17:36:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232081AbiIWRgd (ORCPT ); Fri, 23 Sep 2022 13:36:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54214 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231800AbiIWRgb (ORCPT ); Fri, 23 Sep 2022 13:36:31 -0400 Received: from mailout1.w1.samsung.com (mailout1.w1.samsung.com [210.118.77.11]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5F14814D327 for ; Fri, 23 Sep 2022 10:36:30 -0700 (PDT) Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout1.w1.samsung.com (KnoxPortal) with ESMTP id 20220923173629euoutp012c60b5733977d2a406b63357096b00ce~XjeIFK5YI0811408114euoutp01G for ; Fri, 23 Sep 2022 17:36:29 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.w1.samsung.com 20220923173629euoutp012c60b5733977d2a406b63357096b00ce~XjeIFK5YI0811408114euoutp01G DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1663954589; bh=7l7TBEteecx3AwNFd/S2Kb1j8sryOvSWXnFBoTvrBTE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GeP5caYNIA0zJKZ3xKcHslKtlxZQ7Dqae1CBO3Ht9SjRi3R/YR+5ePSyWjBELajAi 3ojFlUYBZYrQNngUMPUrI0CXDzWemU0EwFjbEEOY9bDouEok61n2Vi4FJa3qlSTqw2 Ro2AmvKAE6D17EBQHvpdkw8PVpDSDTfx+QE8qFgI= Received: from eusmges2new.samsung.com (unknown [203.254.199.244]) by eucas1p1.samsung.com (KnoxPortal) with ESMTP id 20220923173627eucas1p1ff1805506d496509b0b02acd06fb440c~XjeGBXmV61386913869eucas1p1L; Fri, 23 Sep 2022 17:36:27 +0000 (GMT) Received: from eucas1p1.samsung.com ( [182.198.249.206]) by eusmges2new.samsung.com (EUCPMTA) with SMTP id BF.1F.07817.A9EED236; Fri, 23 Sep 2022 18:36:26 +0100 (BST) Received: from eusmtrp1.samsung.com (unknown [182.198.249.138]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0~XjeFYwQ4O2090620906eucas1p2p; Fri, 23 Sep 2022 17:36:26 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp1.samsung.com (KnoxPortal) with ESMTP id 20220923173626eusmtrp187736ea990ce7390114c40622ac154b9~XjeFX9u8c1032310323eusmtrp1a; Fri, 23 Sep 2022 17:36:26 +0000 (GMT) X-AuditID: cbfec7f4-893ff70000011e89-35-632dee9ad0cd Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 8B.78.07473.A9EED236; Fri, 23 Sep 2022 18:36:26 +0100 (BST) Received: from localhost (unknown [106.210.248.168]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220923173625eusmtip190df0be3e8ba67115133d440c9dc35fd~XjeE-W8SQ0836708367eusmtip1T; Fri, 23 Sep 2022 17:36:25 +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, Pankaj Raghav , Luis Chamberlain , Chaitanya Kulkarni , Johannes Thumshirn Subject: [PATCH v15 06/13] null_blk: allow zoned devices with non power-of-2 zone sizes Date: Fri, 23 Sep 2022 19:36:11 +0200 Message-Id: <20220923173618.6899-7-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 Content-Transfer-Encoding: 8bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrDKsWRmVeSWpSXmKPExsWy7djPc7qz3ukmGzR9NbdYf+oYs8Xqu/1s FtM+/GS2+H32PLPF3nezWS1uHtjJZLFn0SQmi5WrjzJZPFk/i9nib9c9JounV2cxWey9pW1x edccNov5y56yW0xo+8pscWPCU0aLz0tb2C3W3HzKYnHilrSDsMflK94eO2fdZfe4fLbUY9Oq TjaPzUvqPXbfbGDz6G1+x+axs/U+q8f7fVfZPPq2rGL02Hy62uPzJjmP9gPdTAG8UVw2Kak5 mWWpRfp2CVwZjRP+MBe8kqk4sfU3UwPjLokuRk4OCQETiRfrJjJ1MXJxCAmsYJT49fk2G4Tz hVGi5e0NdgjnM6PExwf3GGFaDixYANWynFFixtwnjBDOS6CqeddZuxg5ONgEtCQaO9lBGkQE 0iWOb70JNolZYBuzxJ/j68BqhAUiJT6384LUsAioSsy/2sUMYvMKWEhs/jWPGWKZvMTMS9/Z Qco5BSwl+htrIEoEJU7OfMICYjMDlTRvnc0MMl5C4BSnxPIzT5lB6iUEXCROdddBjBGWeHV8 CzuELSNxenIPC4RdLfH0xm+o3hZGif6d69kgeq0l+s7kgJjMApoS63fpQ5Q7SsyZeR2qgk/i xltBiAv4JCZtmw61lFeio00IolpJYufPJ1BLJSQuN82BWuohcWTPdcYJjIqzkPwyC8kvsxD2 LmBkXsUonlpanJueWmyUl1quV5yYW1yal66XnJ+7iRGYIE//O/5lB+PyVx/1DjEycTAeYpTg YFYS4U25qJssxJuSWFmVWpQfX1Sak1p8iFGag0VJnJdthlaykEB6YklqdmpqQWoRTJaJg1Oq gak81kZxla/l0sy4PYWPufnLHLar9N+LzhbeqXGbw9v4wRLdhhUac+Zpm3e3Lf/wyKOtr3T/ Iceb2kvfuaz2SHspHdr07FLtQbdXnw/cqO0rePT1vYnCs0OpxQ9yHrft/Ry+n/fjo6ZXRs7u C81z9L0f7fwltO4Kj/aTL3+LZvpOdtvTdEl3+q/KS6xL9G6s2cn85odBwsd/GySLDJWm2hzL 0p1e9fKdx9X2ORz2Tw4J/NoZ5K7LcF5L1uBr0L7VuSeatu0smj375cb+a7nfDR/oX9JdGlvN uzh9i3yasL5K0hPzV6v+fcxLXC/iGjQtyZBD7PUNqYz9pz3Ta/con5/wuCH4cbST57YNRQKd kiVKLMUZiYZazEXFiQCDgrhs/wMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrLIsWRmVeSWpSXmKPExsVy+t/xu7qz3ukmG5xr4rFYf+oYs8Xqu/1s FtM+/GS2+H32PLPF3nezWS1uHtjJZLFn0SQmi5WrjzJZPFk/i9nib9c9JounV2cxWey9pW1x edccNov5y56yW0xo+8pscWPCU0aLz0tb2C3W3HzKYnHilrSDsMflK94eO2fdZfe4fLbUY9Oq TjaPzUvqPXbfbGDz6G1+x+axs/U+q8f7fVfZPPq2rGL02Hy62uPzJjmP9gPdTAG8UXo2Rfml JakKGfnFJbZK0YYWRnqGlhZ6RiaWeobG5rFWRqZK+nY2Kak5mWWpRfp2CXoZjRP+MBe8kqk4 sfU3UwPjLokuRk4OCQETiQMLFjB1MXJxCAksZZT4cOQHG0RCQuL2wiZGCFtY4s+1LjaIoueM Et+mdwF1cHCwCWhJNHayg9SICORKHFt7jxWkhlngGLPEtK/rmEASwgLhEleuXgIrYhFQlZh/ tYsZxOYVsJDY/GseM8QCeYmZl76zg8zkFLCU6G+sAQkLAZWcX/yIHaJcUOLkzCcsIDYzUHnz 1tnMExgFZiFJzUKSWsDItIpRJLW0ODc9t9hQrzgxt7g0L10vOT93EyMwnrcd+7l5B+O8Vx/1 DjEycTAeYpTgYFYS4U25qJssxJuSWFmVWpQfX1Sak1p8iNEU6OyJzFKiyfnAhJJXEm9oZmBq aGJmaWBqaWasJM7rWdCRKCSQnliSmp2aWpBaBNPHxMEp1cAkpnLk5469v1Q0JgYd6irdV8Ni NVVyroO6wxVrpvr0Q9sdAxgvz9C6uddj7qNzX96LblOz3lPeHmTuV1bbW/bz4pU65gdW5neq 8xil2H1Ezhme5M00deCWztTmlPlaIjsr/8rCe8p8oYdms8/IOeT//JyIsjLnDlOJsMnNp56E 3jpW/2KS1MtKKS3W/5Uff+7b4n235rjXxRKfz7/f1Ts9Lr+3J/mNiPNC4f7NB5Zp7WQLvptR dkh+uk3GXyuX8zprTE7O3J1Y7rgs6NbFUxO2/XdZtPU439ykf/z7qs9MnswtfGaSa0mL+IKt m5WWOK0o6khu3Kdf3dZSLHiS68a66gd3t230u8Dg9DfGb4mfEktxRqKhFnNRcSIAqv51w3AD AAA= X-CMS-MailID: 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0 References: <20220923173618.6899-1-p.raghav@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Convert the power-of-2(po2) based calculation with zone size to be generic in null_zone_no with optimization for po2 zone sizes. The nr_zones calculation in null_init_zoned_dev has been replaced with a division without special handling for po2 zone sizes as this function is called only during the initialization and will not be invoked in the hot path. Reviewed-by: Luis Chamberlain Reviewed by: Adam Manzanares Reviewed-by: Hannes Reinecke Reviewed-by: Bart Van Assche Reviewed-by: Chaitanya Kulkarni Reviewed-by: Johannes Thumshirn Signed-off-by: Pankaj Raghav --- drivers/block/null_blk/main.c | 5 ++--- drivers/block/null_blk/null_blk.h | 1 + drivers/block/null_blk/zoned.c | 18 +++++++++++------- 3 files changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index 1f154f92f4c2..3b24125d8594 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -1976,9 +1976,8 @@ static int null_validate_conf(struct nullb_device *dev) if (dev->queue_mode == NULL_Q_BIO) dev->mbps = 0; - if (dev->zoned && - (!dev->zone_size || !is_power_of_2(dev->zone_size))) { - pr_err("zone_size must be power-of-two\n"); + if (dev->zoned && !dev->zone_size) { + pr_err("Invalid zero zone size\n"); return -EINVAL; } diff --git a/drivers/block/null_blk/null_blk.h b/drivers/block/null_blk/null_blk.h index 94ff68052b1e..f63b6bed1bb3 100644 --- a/drivers/block/null_blk/null_blk.h +++ b/drivers/block/null_blk/null_blk.h @@ -83,6 +83,7 @@ struct nullb_device { unsigned int imp_close_zone_no; struct nullb_zone *zones; sector_t zone_size_sects; + unsigned int zone_size_sects_shift; bool need_zone_res_mgmt; spinlock_t zone_res_lock; diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c index 55a69e48ef8b..015f6823706c 100644 --- a/drivers/block/null_blk/zoned.c +++ b/drivers/block/null_blk/zoned.c @@ -16,7 +16,10 @@ static inline sector_t mb_to_sects(unsigned long mb) static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect) { - return sect >> ilog2(dev->zone_size_sects); + if (dev->zone_size_sects_shift) + return sect >> dev->zone_size_sects_shift; + + return div64_u64(sect, dev->zone_size_sects); } static inline void null_lock_zone_res(struct nullb_device *dev) @@ -65,10 +68,6 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q) sector_t sector = 0; unsigned int i; - if (!is_power_of_2(dev->zone_size)) { - pr_err("zone_size must be power-of-two\n"); - return -EINVAL; - } if (dev->zone_size > dev->size) { pr_err("Zone size larger than device capacity\n"); return -EINVAL; @@ -86,9 +85,14 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q) zone_capacity_sects = mb_to_sects(dev->zone_capacity); dev_capacity_sects = mb_to_sects(dev->size); dev->zone_size_sects = mb_to_sects(dev->zone_size); - dev->nr_zones = round_up(dev_capacity_sects, dev->zone_size_sects) - >> ilog2(dev->zone_size_sects); + if (is_power_of_2(dev->zone_size_sects)) + dev->zone_size_sects_shift = ilog2(dev->zone_size_sects); + else + dev->zone_size_sects_shift = 0; + + dev->nr_zones = DIV_ROUND_UP_SECTOR_T(dev_capacity_sects, + dev->zone_size_sects); dev->zones = kvmalloc_array(dev->nr_zones, sizeof(struct nullb_zone), GFP_KERNEL | __GFP_ZERO); if (!dev->zones) -- 2.25.1 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 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2C918C04A95 for ; Fri, 23 Sep 2022 17:36:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1663954601; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post; bh=FeXsgVSaKTlZ8GW+gCZFeY2z0WmxRw8Xh22VzpvV2Mo=; b=enU6wPvVl16g5QRHh/BNhdGjv8bnvipvwatNoQIL/1PsS+nZWkgxbPAjb+ju8Qf7BYAL5/ hp07JKsgWa6xE7Trc87UBJxRTURUp0PS/p7VB+yCoUoWTrtr7z1EGDDIZ8yLVCpzY7N/dW jmMaByIsGMAgvtjyE5iLO6SybIU4d3M= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-657-8aAV0LBPN36voaIWRH0e6g-1; Fri, 23 Sep 2022 13:36:37 -0400 X-MC-Unique: 8aAV0LBPN36voaIWRH0e6g-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 2BE6F85A5A6; Fri, 23 Sep 2022 17:36:35 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (unknown [10.30.29.100]) by smtp.corp.redhat.com (Postfix) with ESMTP id 169AEC15BAB; Fri, 23 Sep 2022 17:36:35 +0000 (UTC) Received: from mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (localhost [IPv6:::1]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id F2B7819465B7; Fri, 23 Sep 2022 17:36:34 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx10.intmail.prod.int.rdu2.redhat.com [10.11.54.10]) by mm-prod-listman-01.mail-001.prod.us-east-1.aws.redhat.com (Postfix) with ESMTP id D008A1946A42 for ; Fri, 23 Sep 2022 17:36:33 +0000 (UTC) Received: by smtp.corp.redhat.com (Postfix) id C11D9492B09; Fri, 23 Sep 2022 17:36:33 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast09.extmail.prod.ext.rdu2.redhat.com [10.11.55.25]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B9522492B05 for ; Fri, 23 Sep 2022 17:36:33 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 9CA192A5954A for ; Fri, 23 Sep 2022 17:36:33 +0000 (UTC) Received: from mailout1.w1.samsung.com (mailout1.w1.samsung.com [210.118.77.11]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-573-C9Wbn6yYNXiFZsYksN4cSw-1; Fri, 23 Sep 2022 13:36:31 -0400 X-MC-Unique: C9Wbn6yYNXiFZsYksN4cSw-1 Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout1.w1.samsung.com (KnoxPortal) with ESMTP id 20220923173629euoutp011634e06c7e74938f6327489e4fecd08e~XjeIETMte1804318043euoutp01J for ; Fri, 23 Sep 2022 17:36:29 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout1.w1.samsung.com 20220923173629euoutp011634e06c7e74938f6327489e4fecd08e~XjeIETMte1804318043euoutp01J Received: from eusmges2new.samsung.com (unknown [203.254.199.244]) by eucas1p1.samsung.com (KnoxPortal) with ESMTP id 20220923173627eucas1p1ff1805506d496509b0b02acd06fb440c~XjeGBXmV61386913869eucas1p1L; Fri, 23 Sep 2022 17:36:27 +0000 (GMT) Received: from eucas1p1.samsung.com ( [182.198.249.206]) by eusmges2new.samsung.com (EUCPMTA) with SMTP id BF.1F.07817.A9EED236; Fri, 23 Sep 2022 18:36:26 +0100 (BST) Received: from eusmtrp1.samsung.com (unknown [182.198.249.138]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0~XjeFYwQ4O2090620906eucas1p2p; Fri, 23 Sep 2022 17:36:26 +0000 (GMT) Received: from eusmgms1.samsung.com (unknown [182.198.249.179]) by eusmtrp1.samsung.com (KnoxPortal) with ESMTP id 20220923173626eusmtrp187736ea990ce7390114c40622ac154b9~XjeFX9u8c1032310323eusmtrp1a; Fri, 23 Sep 2022 17:36:26 +0000 (GMT) X-AuditID: cbfec7f4-893ff70000011e89-35-632dee9ad0cd Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 8B.78.07473.A9EED236; Fri, 23 Sep 2022 18:36:26 +0100 (BST) Received: from localhost (unknown [106.210.248.168]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20220923173625eusmtip190df0be3e8ba67115133d440c9dc35fd~XjeE-W8SQ0836708367eusmtip1T; Fri, 23 Sep 2022 17:36:25 +0000 (GMT) From: Pankaj Raghav To: snitzer@kernel.org, axboe@kernel.dk, agk@redhat.com, hch@lst.de, damien.lemoal@opensource.wdc.com Date: Fri, 23 Sep 2022 19:36:11 +0200 Message-Id: <20220923173618.6899-7-p.raghav@samsung.com> In-Reply-To: <20220923173618.6899-1-p.raghav@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrDKsWRmVeSWpSXmKPExsWy7djPc7qz3ukmGzR9NbdYf+oYs8Xqu/1s FtM+/GS2+H32PLPF3nezWS1uHtjJZLFn0SQmi5WrjzJZPFk/i9nib9c9JounV2cxWey9pW1x edccNov5y56yW0xo+8pscWPCU0aLz0tb2C3W3HzKYnHilrSDsMflK94eO2fdZfe4fLbUY9Oq TjaPzUvqPXbfbGDz6G1+x+axs/U+q8f7fVfZPPq2rGL02Hy62uPzJjmP9gPdTAG8UVw2Kak5 mWWpRfp2CVwZjRP+MBe8kqk4sfU3UwPjLokuRk4OCQETiRfrJjJ1MXJxCAmsYJT49fk2G4Tz hVGi5e0NdgjnM6PExwf3GGFaDixYANWynFFixtwnjBDOS6CqeddZuxg5ONgEtCQaO9lBGkQE 0iWOb70JNolZYBuzxJ/j68BqhAUiJT6384LUsAioSsy/2sUMYvMKWEhs/jWPGWKZvMTMS9/Z Qco5BSwl+htrIEoEJU7OfMICYjMDlTRvnc0MMl5C4BSnxPIzT5lB6iUEXCROdddBjBGWeHV8 CzuELSNxenIPC4RdLfH0xm+o3hZGif6d69kgeq0l+s7kgJjMApoS63fpQ5Q7SsyZeR2qgk/i xltBiAv4JCZtmw61lFeio00IolpJYufPJ1BLJSQuN82BWuohcWTPdcYJjIqzkPwyC8kvsxD2 LmBkXsUonlpanJueWmyUl1quV5yYW1yal66XnJ+7iRGYIE//O/5lB+PyVx/1DjEycTAeYpTg YFYS4U25qJssxJuSWFmVWpQfX1Sak1p8iFGag0VJnJdthlaykEB6YklqdmpqQWoRTJaJg1Oq gak81kZxla/l0sy4PYWPufnLHLar9N+LzhbeqXGbw9v4wRLdhhUac+Zpm3e3Lf/wyKOtr3T/ Iceb2kvfuaz2SHspHdr07FLtQbdXnw/cqO0rePT1vYnCs0OpxQ9yHrft/Ry+n/fjo6ZXRs7u C81z9L0f7fwltO4Kj/aTL3+LZvpOdtvTdEl3+q/KS6xL9G6s2cn85odBwsd/GySLDJWm2hzL 0p1e9fKdx9X2ORz2Tw4J/NoZ5K7LcF5L1uBr0L7VuSeatu0smj375cb+a7nfDR/oX9JdGlvN uzh9i3yasL5K0hPzV6v+fcxLXC/iGjQtyZBD7PUNqYz9pz3Ta/con5/wuCH4cbST57YNRQKd kiVKLMUZiYZazEXFiQCDgrhs/wMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrLIsWRmVeSWpSXmKPExsVy+t/xu7qz3ukmG5xr4rFYf+oYs8Xqu/1s FtM+/GS2+H32PLPF3nezWS1uHtjJZLFn0SQmi5WrjzJZPFk/i9nib9c9JounV2cxWey9pW1x edccNov5y56yW0xo+8pscWPCU0aLz0tb2C3W3HzKYnHilrSDsMflK94eO2fdZfe4fLbUY9Oq TjaPzUvqPXbfbGDz6G1+x+axs/U+q8f7fVfZPPq2rGL02Hy62uPzJjmP9gPdTAG8UXo2Rfml JakKGfnFJbZK0YYWRnqGlhZ6RiaWeobG5rFWRqZK+nY2Kak5mWWpRfp2CXoZjRP+MBe8kqk4 sfU3UwPjLokuRk4OCQETiQMLFjB1MXJxCAksZZT4cOQHG0RCQuL2wiZGCFtY4s+1LjaIoueM Et+mdwF1cHCwCWhJNHayg9SICORKHFt7jxWkhlngGLPEtK/rmEASwgLhEleuXgIrYhFQlZh/ tYsZxOYVsJDY/GseM8QCeYmZl76zg8zkFLCU6G+sAQkLAZWcX/yIHaJcUOLkzCcsIDYzUHnz 1tnMExgFZiFJzUKSWsDItIpRJLW0ODc9t9hQrzgxt7g0L10vOT93EyMwnrcd+7l5B+O8Vx/1 DjEycTAeYpTgYFYS4U25qJssxJuSWFmVWpQfX1Sak1p8iNEU6OyJzFKiyfnAhJJXEm9oZmBq aGJmaWBqaWasJM7rWdCRKCSQnliSmp2aWpBaBNPHxMEp1cAkpnLk5469v1Q0JgYd6irdV8Ni NVVyroO6wxVrpvr0Q9sdAxgvz9C6uddj7qNzX96LblOz3lPeHmTuV1bbW/bz4pU65gdW5neq 8xil2H1Ezhme5M00deCWztTmlPlaIjsr/8rCe8p8oYdms8/IOeT//JyIsjLnDlOJsMnNp56E 3jpW/2KS1MtKKS3W/5Uff+7b4n235rjXxRKfz7/f1Ts9Lr+3J/mNiPNC4f7NB5Zp7WQLvptR dkh+uk3GXyuX8zprTE7O3J1Y7rgs6NbFUxO2/XdZtPU439ykf/z7qs9MnswtfGaSa0mL+IKt m5WWOK0o6khu3Kdf3dZSLHiS68a66gd3t230u8Dg9DfGb4mfEktxRqKhFnNRcSIAqv51w3AD AAA= X-CMS-MailID: 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0 X-Msg-Generator: CA X-RootMTR: 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20220923173626eucas1p2e06c400ad3c18fe8f33c0b4ab1a25bf0 References: <20220923173618.6899-1-p.raghav@samsung.com> X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 3.1 on 10.11.54.10 Subject: [dm-devel] [PATCH v15 06/13] null_blk: allow zoned devices with non power-of-2 zone sizes X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pankaj Raghav , Chaitanya Kulkarni , bvanassche@acm.org, pankydev8@gmail.com, gost.dev@samsung.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, dm-devel@redhat.com, Johannes Thumshirn , jaegeuk@kernel.org, matias.bjorling@wdc.com, Luis Chamberlain Errors-To: dm-devel-bounces@redhat.com Sender: "dm-devel" X-Scanned-By: MIMEDefang 3.1 on 10.11.54.8 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Convert the power-of-2(po2) based calculation with zone size to be generic in null_zone_no with optimization for po2 zone sizes. The nr_zones calculation in null_init_zoned_dev has been replaced with a division without special handling for po2 zone sizes as this function is called only during the initialization and will not be invoked in the hot path. Reviewed-by: Luis Chamberlain Reviewed by: Adam Manzanares Reviewed-by: Hannes Reinecke Reviewed-by: Bart Van Assche Reviewed-by: Chaitanya Kulkarni Reviewed-by: Johannes Thumshirn Signed-off-by: Pankaj Raghav --- drivers/block/null_blk/main.c | 5 ++--- drivers/block/null_blk/null_blk.h | 1 + drivers/block/null_blk/zoned.c | 18 +++++++++++------- 3 files changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index 1f154f92f4c2..3b24125d8594 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -1976,9 +1976,8 @@ static int null_validate_conf(struct nullb_device *dev) if (dev->queue_mode == NULL_Q_BIO) dev->mbps = 0; - if (dev->zoned && - (!dev->zone_size || !is_power_of_2(dev->zone_size))) { - pr_err("zone_size must be power-of-two\n"); + if (dev->zoned && !dev->zone_size) { + pr_err("Invalid zero zone size\n"); return -EINVAL; } diff --git a/drivers/block/null_blk/null_blk.h b/drivers/block/null_blk/null_blk.h index 94ff68052b1e..f63b6bed1bb3 100644 --- a/drivers/block/null_blk/null_blk.h +++ b/drivers/block/null_blk/null_blk.h @@ -83,6 +83,7 @@ struct nullb_device { unsigned int imp_close_zone_no; struct nullb_zone *zones; sector_t zone_size_sects; + unsigned int zone_size_sects_shift; bool need_zone_res_mgmt; spinlock_t zone_res_lock; diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c index 55a69e48ef8b..015f6823706c 100644 --- a/drivers/block/null_blk/zoned.c +++ b/drivers/block/null_blk/zoned.c @@ -16,7 +16,10 @@ static inline sector_t mb_to_sects(unsigned long mb) static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect) { - return sect >> ilog2(dev->zone_size_sects); + if (dev->zone_size_sects_shift) + return sect >> dev->zone_size_sects_shift; + + return div64_u64(sect, dev->zone_size_sects); } static inline void null_lock_zone_res(struct nullb_device *dev) @@ -65,10 +68,6 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q) sector_t sector = 0; unsigned int i; - if (!is_power_of_2(dev->zone_size)) { - pr_err("zone_size must be power-of-two\n"); - return -EINVAL; - } if (dev->zone_size > dev->size) { pr_err("Zone size larger than device capacity\n"); return -EINVAL; @@ -86,9 +85,14 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q) zone_capacity_sects = mb_to_sects(dev->zone_capacity); dev_capacity_sects = mb_to_sects(dev->size); dev->zone_size_sects = mb_to_sects(dev->zone_size); - dev->nr_zones = round_up(dev_capacity_sects, dev->zone_size_sects) - >> ilog2(dev->zone_size_sects); + if (is_power_of_2(dev->zone_size_sects)) + dev->zone_size_sects_shift = ilog2(dev->zone_size_sects); + else + dev->zone_size_sects_shift = 0; + + dev->nr_zones = DIV_ROUND_UP_SECTOR_T(dev_capacity_sects, + dev->zone_size_sects); dev->zones = kvmalloc_array(dev->nr_zones, sizeof(struct nullb_zone), GFP_KERNEL | __GFP_ZERO); if (!dev->zones) -- 2.25.1 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel