1 files changed, 6 insertions, 1 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index a10645830223..043b215769c2 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1716,6 +1716,7 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info,
                                  struct btrfs_device *srcdev)
 {
         WARN_ON(!mutex_is_locked(&fs_info->fs_devices->device_list_mutex));
+
         list_del_rcu(&srcdev->dev_list);
         list_del_rcu(&srcdev->dev_alloc_list);
         fs_info->fs_devices->num_devices--;
@@ -1725,9 +1726,13 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info,
         }
         if (srcdev->can_discard)
                 fs_info->fs_devices->num_can_discard--;
-        if (srcdev->bdev)
+        if (srcdev->bdev) {
                 fs_info->fs_devices->open_devices--;
 
+                /* zero out the old super */
+                btrfs_scratch_superblock(srcdev);
+        }
+
         call_rcu(&srcdev->rcu, free_device);
 }