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From: Luis Chamberlain <mcgrof@kernel.org>
To: axboe@kernel.dk, martin.petersen@oracle.com, jejb@linux.ibm.com,
	kbusch@kernel.org, sagi@grimberg.me, adrian.hunter@intel.com,
	beanhuo@micron.com, ulf.hansson@linaro.org, avri.altman@wdc.com,
	swboyd@chromium.org, agk@redhat.com, snitzer@redhat.com,
	josef@toxicpanda.com
Cc: linux-block@vger.kernel.org, bvanassche@acm.org,
	linux-scsi@vger.kernel.org, linux-mmc@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
	ming.lei@redhat.com, hch@infradead.org, dm-devel@redhat.com,
	nbd@other.debian.org, Christoph Hellwig <hch@lst.de>,
	Luis Chamberlain <mcgrof@kernel.org>
Subject: [dm-devel] [PATCH v2 6/6] nbd: add error handling support for add_disk()
Date: Fri, 27 Aug 2021 12:05:04 -0700	[thread overview]
Message-ID: <20210827190504.3103362-7-mcgrof@kernel.org> (raw)
In-Reply-To: <20210827190504.3103362-1-mcgrof@kernel.org>

We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/block/nbd.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 5170a630778d..741365295157 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -1757,7 +1757,9 @@ static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	disk->fops = &nbd_fops;
 	disk->private_data = nbd;
 	sprintf(disk->disk_name, "nbd%d", index);
-	add_disk(disk);
+	err = add_disk(disk);
+	if (err)
+		goto out_err_disk;
 
 	/*
 	 * Now publish the device.
@@ -1766,6 +1768,8 @@ static struct nbd_device *nbd_dev_add(int index, unsigned int refs)
 	nbd_total_devices++;
 	return nbd;
 
+out_err_disk:
+	blk_cleanup_disk(disk);
 out_free_idr:
 	mutex_lock(&nbd_index_mutex);
 	idr_remove(&nbd_index_idr, index);
-- 
2.30.2

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      parent reply	other threads:[~2021-08-27 19:05 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-27 19:04 [dm-devel] [PATCH v2 0/6] block: first batch of add_disk() error handling conversions Luis Chamberlain
2021-08-27 19:04 ` [dm-devel] [PATCH v2 1/6] scsi/sd: add error handling support for add_disk() Luis Chamberlain
2021-08-27 19:05 ` [dm-devel] [PATCH v2 2/6] scsi/sr: " Luis Chamberlain
2021-08-27 19:05 ` [dm-devel] [PATCH v2 3/6] nvme: " Luis Chamberlain
2021-08-28  7:11   ` Christoph Hellwig
2021-08-27 19:05 ` [dm-devel] [PATCH v2 4/6] md: " Luis Chamberlain
2021-08-27 19:05 ` [dm-devel] [PATCH v2 5/6] loop: " Luis Chamberlain
2021-08-27 19:05 ` Luis Chamberlain [this message]

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