From patchwork Wed Aug 23 10:48:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kara X-Patchwork-Id: 13362096 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 F0B37EE49B9 for ; Wed, 23 Aug 2023 10:50:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233987AbjHWKuf (ORCPT ); Wed, 23 Aug 2023 06:50:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232598AbjHWKuW (ORCPT ); Wed, 23 Aug 2023 06:50:22 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4DBCE65; Wed, 23 Aug 2023 03:49:26 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 2BBEC20753; Wed, 23 Aug 2023 10:48:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1692787739; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=paxukEyoAAv5FkB2kDfTJynj+eHH5ui7CxItFNHAnCo=; b=2UGC0DMiLeOcG+stzpEJHLm+c+cGgB+dy+s/g33T+OY8gmhPyET9a80AdvUIebwzTLMYdD 4GHmawzDg0vvxknqvVvLI0ArRBTu7p5TD6164g93NBNKRsxnUhuZR3+PWYsviea1bS+MAg eomFz5xJxDsdEfksQjLOKX9f37SLvYc= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1692787739; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=paxukEyoAAv5FkB2kDfTJynj+eHH5ui7CxItFNHAnCo=; b=HTqul4jIBiEr7VLvqhgWPNeJ7Qh8Dl/dVPfoCHQF3vP8VmG/O0zl506+Dm0OC6nJCbCGYF JlaDDYTeCkBnUVBQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 16F4513458; Wed, 23 Aug 2023 10:48:59 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 1juQBRvk5WRyIAAAMHmgww (envelope-from ); Wed, 23 Aug 2023 10:48:59 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id 99332A079B; Wed, 23 Aug 2023 12:48:57 +0200 (CEST) From: Jan Kara To: Christian Brauner Cc: Jens Axboe , , , Christoph Hellwig , Jan Kara , linux-nfs@vger.kernel.org, Trond Myklebust , Anna Schumaker , Christoph Hellwig Subject: [PATCH 25/29] nfs/blocklayout: Convert to use bdev_open_by_dev/path() Date: Wed, 23 Aug 2023 12:48:36 +0200 Message-Id: <20230823104857.11437-25-jack@suse.cz> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230818123232.2269-1-jack@suse.cz> References: <20230818123232.2269-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=6181; i=jack@suse.cz; h=from:subject; bh=0IjULVrCIX3jA8XS50OG9gB3t0tQZs/jagbxUdIARmQ=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBk5eQDDRVrTyNrn3Bld2eVVP3ntq1nPuGH03sBMvBU aaEvSzeJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCZOXkAwAKCRCcnaoHP2RA2f3uB/ 9TApxncDSBqd+ot6pVyTXXe9FrQsQxN8sc66LyI0cYDvAsXbVlplBntvQw6HP7cLIECbB+Aq77cEKO 07B1WlgCQx5Y9jcAUQ05pLw7ShEHLwaB9DyPoWFUnv4bKg8dV3D02BaZv8W3Iorg3jaho4ZwxYHAHv Vlyvp5lGVvMHGGzIxLqzyxouS1j57LwPqOzbaXQRYHh5Kazg19B1ot1tQM6HmbF8drWHrhGcCkG3Np IAA/++uJQ0Pw0XJp3si5rpPXm2OnmlTl5Bkomxc5ZhNot0v/4rC8Pa4kuKUMCZtLAziiuv05YUIv2e pZCXGiawn5aSUtJqo4oESveUSPgB9v X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Convert block device handling to use bdev_open_by_dev/path() and pass the handle around. CC: linux-nfs@vger.kernel.org CC: Trond Myklebust CC: Anna Schumaker Acked-by: Christoph Hellwig Signed-off-by: Jan Kara Reviewed-by: Christian Brauner --- fs/nfs/blocklayout/blocklayout.h | 2 +- fs/nfs/blocklayout/dev.c | 76 ++++++++++++++++---------------- 2 files changed, 38 insertions(+), 40 deletions(-) diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h index 716bc75e9ed2..b4294a8aa2d4 100644 --- a/fs/nfs/blocklayout/blocklayout.h +++ b/fs/nfs/blocklayout/blocklayout.h @@ -108,7 +108,7 @@ struct pnfs_block_dev { struct pnfs_block_dev *children; u64 chunk_size; - struct block_device *bdev; + struct bdev_handle *bdev_handle; u64 disk_offset; u64 pr_key; diff --git a/fs/nfs/blocklayout/dev.c b/fs/nfs/blocklayout/dev.c index 70f5563a8e81..0b57b8a4b7e2 100644 --- a/fs/nfs/blocklayout/dev.c +++ b/fs/nfs/blocklayout/dev.c @@ -25,17 +25,17 @@ bl_free_device(struct pnfs_block_dev *dev) } else { if (dev->pr_registered) { const struct pr_ops *ops = - dev->bdev->bd_disk->fops->pr_ops; + dev->bdev_handle->bdev->bd_disk->fops->pr_ops; int error; - error = ops->pr_register(dev->bdev, dev->pr_key, 0, - false); + error = ops->pr_register(dev->bdev_handle->bdev, + dev->pr_key, 0, false); if (error) pr_err("failed to unregister PR key.\n"); } - if (dev->bdev) - blkdev_put(dev->bdev, NULL); + if (dev->bdev_handle) + bdev_release(dev->bdev_handle); } } @@ -169,7 +169,7 @@ static bool bl_map_simple(struct pnfs_block_dev *dev, u64 offset, map->start = dev->start; map->len = dev->len; map->disk_offset = dev->disk_offset; - map->bdev = dev->bdev; + map->bdev = dev->bdev_handle->bdev; return true; } @@ -236,28 +236,26 @@ bl_parse_simple(struct nfs_server *server, struct pnfs_block_dev *d, struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) { struct pnfs_block_volume *v = &volumes[idx]; - struct block_device *bdev; + struct bdev_handle *bdev_handle; dev_t dev; dev = bl_resolve_deviceid(server, v, gfp_mask); if (!dev) return -EIO; - bdev = blkdev_get_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_WRITE, NULL, - NULL); - if (IS_ERR(bdev)) { + bdev_handle = bdev_open_by_dev(dev, BLK_OPEN_READ | BLK_OPEN_WRITE, + NULL, NULL); + if (IS_ERR(bdev_handle)) { printk(KERN_WARNING "pNFS: failed to open device %d:%d (%ld)\n", - MAJOR(dev), MINOR(dev), PTR_ERR(bdev)); - return PTR_ERR(bdev); + MAJOR(dev), MINOR(dev), PTR_ERR(bdev_handle)); + return PTR_ERR(bdev_handle); } - d->bdev = bdev; - - - d->len = bdev_nr_bytes(d->bdev); + d->bdev_handle = bdev_handle; + d->len = bdev_nr_bytes(bdev_handle->bdev); d->map = bl_map_simple; printk(KERN_INFO "pNFS: using block device %s\n", - d->bdev->bd_disk->disk_name); + bdev_handle->bdev->bd_disk->disk_name); return 0; } @@ -302,10 +300,10 @@ bl_validate_designator(struct pnfs_block_volume *v) } } -static struct block_device * +static struct bdev_handle * bl_open_path(struct pnfs_block_volume *v, const char *prefix) { - struct block_device *bdev; + struct bdev_handle *bdev_handle; const char *devname; devname = kasprintf(GFP_KERNEL, "/dev/disk/by-id/%s%*phN", @@ -313,15 +311,15 @@ bl_open_path(struct pnfs_block_volume *v, const char *prefix) if (!devname) return ERR_PTR(-ENOMEM); - bdev = blkdev_get_by_path(devname, BLK_OPEN_READ | BLK_OPEN_WRITE, NULL, - NULL); - if (IS_ERR(bdev)) { + bdev_handle = bdev_open_by_path(devname, BLK_OPEN_READ | BLK_OPEN_WRITE, + NULL, NULL); + if (IS_ERR(bdev_handle)) { pr_warn("pNFS: failed to open device %s (%ld)\n", - devname, PTR_ERR(bdev)); + devname, PTR_ERR(bdev_handle)); } kfree(devname); - return bdev; + return bdev_handle; } static int @@ -329,7 +327,7 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d, struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) { struct pnfs_block_volume *v = &volumes[idx]; - struct block_device *bdev; + struct bdev_handle *bdev_handle; const struct pr_ops *ops; int error; @@ -342,32 +340,32 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d, * On other distributions like Debian, the default SCSI by-id path will * point to the dm-multipath device if one exists. */ - bdev = bl_open_path(v, "dm-uuid-mpath-0x"); - if (IS_ERR(bdev)) - bdev = bl_open_path(v, "wwn-0x"); - if (IS_ERR(bdev)) - return PTR_ERR(bdev); - d->bdev = bdev; - - d->len = bdev_nr_bytes(d->bdev); + bdev_handle = bl_open_path(v, "dm-uuid-mpath-0x"); + if (IS_ERR(bdev_handle)) + bdev_handle = bl_open_path(v, "wwn-0x"); + if (IS_ERR(bdev_handle)) + return PTR_ERR(bdev_handle); + d->bdev_handle = bdev_handle; + + d->len = bdev_nr_bytes(d->bdev_handle->bdev); d->map = bl_map_simple; d->pr_key = v->scsi.pr_key; pr_info("pNFS: using block device %s (reservation key 0x%llx)\n", - d->bdev->bd_disk->disk_name, d->pr_key); + d->bdev_handle->bdev->bd_disk->disk_name, d->pr_key); - ops = d->bdev->bd_disk->fops->pr_ops; + ops = d->bdev_handle->bdev->bd_disk->fops->pr_ops; if (!ops) { pr_err("pNFS: block device %s does not support reservations.", - d->bdev->bd_disk->disk_name); + d->bdev_handle->bdev->bd_disk->disk_name); error = -EINVAL; goto out_blkdev_put; } - error = ops->pr_register(d->bdev, 0, d->pr_key, true); + error = ops->pr_register(d->bdev_handle->bdev, 0, d->pr_key, true); if (error) { pr_err("pNFS: failed to register key for block device %s.", - d->bdev->bd_disk->disk_name); + d->bdev_handle->bdev->bd_disk->disk_name); goto out_blkdev_put; } @@ -375,7 +373,7 @@ bl_parse_scsi(struct nfs_server *server, struct pnfs_block_dev *d, return 0; out_blkdev_put: - blkdev_put(d->bdev, NULL); + bdev_release(d->bdev_handle); return error; }