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Merge branch 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md into block-5.15

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Pull MD fix from Song.

* 'md-fixes' of https://git.kernel.org/pub/scm/linux/kernel/git/song/md:
  md: fix a lock order reversal in md_alloc
This commit is contained in:
Jens Axboe 2021-09-22 12:43:18 -06:00
commit cd586d213e
1 changed files with 0 additions and 5 deletions
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5
drivers/md/md.c
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@ -5700,10 +5700,6 @@ static int md_alloc(dev_t dev, char *name)
disk->flags |= GENHD_FL_EXT_DEVT;
disk->events |= DISK_EVENT_MEDIA_CHANGE;
mddev->gendisk = disk;
/* As soon as we call add_disk(), another thread could get
* through to md_open, so make sure it doesn't get too far
*/
mutex_lock(&mddev->open_mutex);
add_disk(disk);
error = kobject_add(&mddev->kobj, &disk_to_dev(disk)->kobj, "%s", "md");
@ -5718,7 +5714,6 @@ static int md_alloc(dev_t dev, char *name)
if (mddev->kobj.sd &&
sysfs_create_group(&mddev->kobj, &md_bitmap_group))
pr_debug("pointless warning\n");
mutex_unlock(&mddev->open_mutex);
abort:
mutex_unlock(&disks_mutex);
if (!error && mddev->kobj.sd) {