diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 9189f9e3c3598fb5ce517fc09cde7ac8a36a0862..07b3b36f40ee51657b248112a6d1f028cea9e364 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -4009,6 +4009,12 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
 		if (!RB_EMPTY_ROOT(&blocks)) {
 			ret = relocate_tree_blocks(trans, rc, &blocks);
 			if (ret < 0) {
+				/*
+				 * if we fail to relocate tree blocks, force to update
+				 * backref cache when committing transaction.
+				 */
+				rc->backref_cache.last_trans = trans->transid - 1;
+
 				if (ret != -EAGAIN) {
 					err = ret;
 					break;