1 files changed, 6 insertions, 2 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index da0e632a21fc..00c8efdcd1e5 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1848,8 +1848,12 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info,
         if (srcdev->bdev) {
                 fs_info->fs_devices->open_devices--;
 
-                /* zero out the old super */
-                btrfs_scratch_superblock(srcdev);
+                /*
+                 * zero out the old super if it is not writable
+                 * (e.g. seed device)
+                 */
+                if (srcdev->writeable)
+                        btrfs_scratch_superblock(srcdev);
         }
 
         call_rcu(&srcdev->rcu, free_device);