1 files changed, 8 insertions, 0 deletions

diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h
index ea292117f882..94f5bde2b58d 100644
--- a/fs/btrfs/transaction.h
+++ b/fs/btrfs/transaction.h
@@ -19,10 +19,16 @@
 #ifndef __BTRFS_TRANSACTION__
 #define __BTRFS_TRANSACTION__
 #include "btrfs_inode.h"
+#include "delayed-ref.h"
 
 struct btrfs_transaction {
         u64 transid;
+        /*
+         * total writers in this transaction, it must be zero before the
+         * transaction can end
+         */
         unsigned long num_writers;
+
         unsigned long num_joined;
         int in_commit;
         int use_count;
@@ -34,6 +40,7 @@ struct btrfs_transaction {
         wait_queue_head_t writer_wait;
         wait_queue_head_t commit_wait;
         struct list_head pending_snapshots;
+        struct btrfs_delayed_ref_root delayed_refs;
 };
 
 struct btrfs_trans_handle {
@@ -44,6 +51,7 @@ struct btrfs_trans_handle {
         u64 block_group;
         u64 alloc_exclude_start;
         u64 alloc_exclude_nr;
+        unsigned long delayed_ref_updates;
 };
 
 struct btrfs_pending_snapshot {