diff options
| -rw-r--r-- | fs/block_dev.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index 73031ec54a7b..1c62845a72c7 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1043,13 +1043,22 @@ static struct block_device *bd_acquire(struct inode *inode) spin_lock(&bdev_lock); bdev = inode->i_bdev; - if (bdev) { + if (bdev && !inode_unhashed(bdev->bd_inode)) { bdgrab(bdev); spin_unlock(&bdev_lock); return bdev; } spin_unlock(&bdev_lock); + /* + * i_bdev references block device inode that was already shut down + * (corresponding device got removed). Remove the reference and look + * up block device inode again just in case new device got + * reestablished under the same device number. + */ + if (bdev) + bd_forget(inode); + bdev = bdget(inode->i_rdev); if (bdev) { spin_lock(&bdev_lock); |