[PATCH 6/6] blockdev: Avoid two active bdev inodes for one device

When blkdev_open() races with device removal and creation it can happen that unhashed bdev inode gets associated with newly created gendisk like: CPU0CPU1 blkdev_open() bdev = bd_acquire() del_gendisk()

[PATCH 6/6] blockdev: Avoid two active bdev inodes for one device

When blkdev_open() races with device removal and creation it can happen that unhashed bdev inode gets associated with newly created gendisk like: CPU0CPU1 blkdev_open() bdev = bd_acquire() del_gendisk()