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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: hch@infradead.org, hare@suse.de, bvanassche@acm.org,
	ming.lei@redhat.com, linux-scsi@vger.kernel.org,
	linux-nvme@lists.infradead.org, linux-mmc@vger.kernel.org,
	dm-devel@redhat.com, nbd@other.debian.org,
	linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
	Luis Chamberlain <mcgrof@kernel.org>,
	Christoph Hellwig <hch@lst.de>
Subject: [PATCH v4 5/6] loop: add error handling support for add_disk()
Date: Mon, 27 Sep 2021 14:59:57 -0700	[thread overview]
Message-ID: <20210927215958.1062466-6-mcgrof@kernel.org> (raw)
In-Reply-To: <20210927215958.1062466-1-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>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 drivers/block/loop.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 7bf4686af774..00ee365ed5e0 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -2394,13 +2394,19 @@ static int loop_add(int i)
 	disk->event_flags	= DISK_EVENT_FLAG_UEVENT;
 	sprintf(disk->disk_name, "loop%d", i);
 	/* Make this loop device reachable from pathname. */
-	add_disk(disk);
+	err = add_disk(disk);
+	if (err)
+		goto out_cleanup_disk;
+
 	/* Show this loop device. */
 	mutex_lock(&loop_ctl_mutex);
 	lo->idr_visible = true;
 	mutex_unlock(&loop_ctl_mutex);
+
 	return i;
 
+out_cleanup_disk:
+	blk_cleanup_disk(disk);
 out_cleanup_tags:
 	blk_mq_free_tag_set(&lo->tag_set);
 out_free_idr:
-- 
2.30.2


  parent reply	other threads:[~2021-09-27 22:00 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-27 21:59 [PATCH v4 0/6] block: first batch of add_disk() error handling conversions Luis Chamberlain
2021-09-27 21:59 ` [PATCH v4 1/6] scsi/sd: add error handling support for add_disk() Luis Chamberlain
2021-09-27 21:59 ` [PATCH v4 2/6] scsi/sr: " Luis Chamberlain
2021-09-27 21:59 ` [PATCH v4 3/6] md: " Luis Chamberlain
2021-09-27 21:59 ` [PATCH v4 4/6] dm: add add_disk() error handling Luis Chamberlain
2021-10-06 13:17   ` Mike Snitzer
2021-09-27 21:59 ` Luis Chamberlain [this message]
2021-09-27 22:28   ` [PATCH v4 5/6] loop: add error handling support for add_disk() Jens Axboe
2021-09-27 21:59 ` [PATCH v4 6/6] nbd: " Luis Chamberlain
2021-09-27 22:28   ` Jens Axboe

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