1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 6ed6186f51cd..94f816cb6e35 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -720,7 +720,8 @@ static noinline int create_pending_snapshot(struct btrfs_trans_handle *trans,
         memcpy(new_root_item, &root->root_item, sizeof(*new_root_item));
 
         key.objectid = objectid;
-        key.offset = 0;
+        /* record when the snapshot was created in key.offset */
+        key.offset = trans->transid;
         btrfs_set_key_type(&key, BTRFS_ROOT_ITEM_KEY);
 
         old = btrfs_lock_root_node(root);