From patchwork Wed Jun 2 06:53:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Hellwig X-Patchwork-Id: 1486460 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:e::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=c4n+yTnC; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4Fw13x5HPtz9sCD for ; Wed, 2 Jun 2021 17:33:49 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KdfhlAs0OxHtFKcgAqScx8v8hC0t4nGy2e2kQXFa7VA=; b=c4n+yTnCBuXdhX 7k7KfAvINlrYXGfK4AcpJDMyBOB2U5iPeBCVvUgf0049MGsofGbjr4CYmHvyPUOrsdaMmnqUrJcVD q4Bi2SMsJYysGpq0LAesTmMpRqMuJp6l/XccmAFoBj1609PffSQQ6HZBqrl96uHkORa6BtLlIGQHl f5TAG/kjomb+i5psHN08lnHlySD098JFZj6zFnvqFRjgAZdTvdCKfUSrFQNXFPXj8mZ83T+OLF6s3 iNG+pLU78cI6EsjH583/jQRwkDZKiG9XaSZlw0RKLEhyfCWZW84+ZHI7jLwy5yIDGVVgTEtcTEazD 1rXEFfa4GC/aJiW0rASg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1loLNK-002KDY-Bd; Wed, 02 Jun 2021 07:33:14 +0000 Received: from shol69.static.otenet.gr ([83.235.170.67] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1loKms-00269K-Qr; Wed, 02 Jun 2021 06:55:35 +0000 From: Christoph Hellwig To: Jens Axboe Cc: Justin Sanders , Denis Efremov , Josef Bacik , Tim Waugh , Geoff Levand , Ilya Dryomov , "Md. Haris Iqbal" , Jack Wang , "Michael S. Tsirkin" , Jason Wang , Konrad Rzeszutek Wilk , =?utf-8?q?Roger_Pau_Monn?= =?utf-8?q?=C3=A9?= , Mike Snitzer , Maxim Levitsky , Alex Dubov , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , dm-devel@redhat.com, linux-block@vger.kernel.org, nbd@other.debian.org, linuxppc-dev@lists.ozlabs.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, xen-devel@lists.xenproject.org, linux-mmc@vger.kernel.org, linux-mtd@lists.infradead.org, linux-s390@vger.kernel.org Subject: [PATCH 22/30] rbd: use blk_mq_alloc_disk and blk_cleanup_disk Date: Wed, 2 Jun 2021 09:53:37 +0300 Message-Id: <20210602065345.355274-23-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210602065345.355274-1-hch@lst.de> References: <20210602065345.355274-1-hch@lst.de> MIME-Version: 1.0 X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Use blk_mq_alloc_disk and blk_cleanup_disk to simplify the gendisk and request_queue allocation. Signed-off-by: Christoph Hellwig --- drivers/block/rbd.c | 52 ++++++++++++++++----------------------------- 1 file changed, 18 insertions(+), 34 deletions(-) diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c index bbb88eb009e0..531d390902dd 100644 --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -4750,9 +4750,8 @@ static blk_status_t rbd_queue_rq(struct blk_mq_hw_ctx *hctx, static void rbd_free_disk(struct rbd_device *rbd_dev) { - blk_cleanup_queue(rbd_dev->disk->queue); + blk_cleanup_disk(rbd_dev->disk); blk_mq_free_tag_set(&rbd_dev->tag_set); - put_disk(rbd_dev->disk); rbd_dev->disk = NULL; } @@ -4922,22 +4921,6 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) rbd_dev->layout.object_size * rbd_dev->layout.stripe_count; int err; - /* create gendisk info */ - disk = alloc_disk(single_major ? - (1 << RBD_SINGLE_MAJOR_PART_SHIFT) : - RBD_MINORS_PER_MAJOR); - if (!disk) - return -ENOMEM; - - snprintf(disk->disk_name, sizeof(disk->disk_name), RBD_DRV_NAME "%d", - rbd_dev->dev_id); - disk->major = rbd_dev->major; - disk->first_minor = rbd_dev->minor; - if (single_major) - disk->flags |= GENHD_FL_EXT_DEVT; - disk->fops = &rbd_bd_ops; - disk->private_data = rbd_dev; - memset(&rbd_dev->tag_set, 0, sizeof(rbd_dev->tag_set)); rbd_dev->tag_set.ops = &rbd_mq_ops; rbd_dev->tag_set.queue_depth = rbd_dev->opts->queue_depth; @@ -4948,13 +4931,26 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) err = blk_mq_alloc_tag_set(&rbd_dev->tag_set); if (err) - goto out_disk; + return err; - q = blk_mq_init_queue(&rbd_dev->tag_set); - if (IS_ERR(q)) { - err = PTR_ERR(q); + disk = blk_mq_alloc_disk(&rbd_dev->tag_set, rbd_dev); + if (IS_ERR(disk)) { + err = PTR_ERR(disk); goto out_tag_set; } + q = disk->queue; + + snprintf(disk->disk_name, sizeof(disk->disk_name), RBD_DRV_NAME "%d", + rbd_dev->dev_id); + disk->major = rbd_dev->major; + disk->first_minor = rbd_dev->minor; + if (single_major) { + disk->minors = (1 << RBD_SINGLE_MAJOR_PART_SHIFT); + disk->flags |= GENHD_FL_EXT_DEVT; + } else { + disk->minors = RBD_MINORS_PER_MAJOR; + } + disk->fops = &rbd_bd_ops; blk_queue_flag_set(QUEUE_FLAG_NONROT, q); /* QUEUE_FLAG_ADD_RANDOM is off by default for blk-mq */ @@ -4976,21 +4972,11 @@ static int rbd_init_disk(struct rbd_device *rbd_dev) if (!ceph_test_opt(rbd_dev->rbd_client->client, NOCRC)) blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, q); - /* - * disk_release() expects a queue ref from add_disk() and will - * put it. Hold an extra ref until add_disk() is called. - */ - WARN_ON(!blk_get_queue(q)); - disk->queue = q; - q->queuedata = rbd_dev; - rbd_dev->disk = disk; return 0; out_tag_set: blk_mq_free_tag_set(&rbd_dev->tag_set); -out_disk: - put_disk(disk); return err; } @@ -7088,8 +7074,6 @@ static ssize_t do_rbd_add(struct bus_type *bus, goto err_out_image_lock; device_add_disk(&rbd_dev->dev, rbd_dev->disk, NULL); - /* see rbd_init_disk() */ - blk_put_queue(rbd_dev->disk->queue); spin_lock(&rbd_dev_list_lock); list_add_tail(&rbd_dev->node, &rbd_dev_list);