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md: add error handling support for add_disk()

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

We just do the unwinding of what was not done before, and are
sure to unlock prior to bailing.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Luis Chamberlain 2021-09-01 13:38:30 +02:00 • committed by Jens Axboe
parent 1f0a258f11
commit 9be68dd7ac
1 changed files with 5 additions and 1 deletions
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6
drivers/md/md.c
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@ -5700,7 +5700,11 @@ static int md_alloc(dev_t dev, char *name)
disk->flags |= GENHD_FL_EXT_DEVT;
disk->events |= DISK_EVENT_MEDIA_CHANGE;
mddev->gendisk = disk;
add_disk(disk);
error = add_disk(disk);
if (error) {
blk_cleanup_disk(disk);
goto abort;
}
error = kobject_add(&mddev->kobj, &disk_to_dev(disk)->kobj, "%s", "md");
if (error) {