diff options
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index b957717..8ebbfdf 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1005,6 +1005,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) } lock_kernel(); + restart: ret = -ENXIO; disk = get_gendisk(bdev->bd_dev, &partno); @@ -1025,6 +1026,19 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) if (disk->fops->open) { ret = disk->fops->open(bdev, mode); + if (ret == -ERESTARTSYS) { + /* Lost a race with 'disk' being + * deleted, try again. + * See md.c + */ + disk_put_part(bdev->bd_part); + bdev->bd_part = NULL; + module_put(disk->fops->owner); + put_disk(disk); + bdev->bd_disk = NULL; + mutex_unlock(&bdev->bd_mutex); + goto restart; + } if (ret) goto out_clear; } |