1 files changed, 18 insertions, 0 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 3f6811cdf803..3b8ae1a8f02d 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -129,6 +129,24 @@ static inline int extwriter_counter_read(struct btrfs_transaction *trans)
 }
 
 /*
+ * To be called after all the new block groups attached to the transaction
+ * handle have been created (btrfs_create_pending_block_groups()).
+ */
+void btrfs_trans_release_chunk_metadata(struct btrfs_trans_handle *trans)
+{
+        struct btrfs_fs_info *fs_info = trans->fs_info;
+
+        if (!trans->chunk_bytes_reserved)
+                return;
+
+        WARN_ON_ONCE(!list_empty(&trans->new_bgs));
+
+        btrfs_block_rsv_release(fs_info, &fs_info->chunk_block_rsv,
+                                trans->chunk_bytes_reserved);
+        trans->chunk_bytes_reserved = 0;
+}
+
+/*
  * either allocate a new transaction or hop into the existing one
  */
 static noinline int join_transaction(struct btrfs_fs_info *fs_info,