1 files changed, 14 insertions, 3 deletions

diff --git a/fs/btrfs/delayed-ref.h b/fs/btrfs/delayed-ref.h
index c345fee9f96b..57153fcc347b 100644
--- a/fs/btrfs/delayed-ref.h
+++ b/fs/btrfs/delayed-ref.h
@@ -68,6 +68,8 @@ struct btrfs_delayed_ref_head {
          */
         struct mutex mutex;
 
+        struct list_head cluster;
+
         /*
          * when a new extent is allocated, it is just reserved in memory
          * The actual extent isn't inserted into the extent allocation tree
@@ -115,12 +117,20 @@ struct btrfs_delayed_ref_root {
          */
         unsigned long num_entries;
 
+        /* total number of head nodes in tree */
+        unsigned long num_heads;
+
+        /* total number of head nodes ready for processing */
+        unsigned long num_heads_ready;
+
         /*
          * set when the tree is flushing before a transaction commit,
          * used by the throttling code to decide if new updates need
          * to be run right away
          */
         int flushing;
+
+        u64 run_delayed_start;
 };
 
 static inline void btrfs_put_delayed_ref(struct btrfs_delayed_ref_node *ref)
@@ -140,9 +150,6 @@ int btrfs_add_delayed_ref(struct btrfs_trans_handle *trans,
 struct btrfs_delayed_ref_head *
 btrfs_find_delayed_ref_head(struct btrfs_trans_handle *trans, u64 bytenr);
 int btrfs_delayed_ref_pending(struct btrfs_trans_handle *trans, u64 bytenr);
-int btrfs_lock_delayed_ref(struct btrfs_trans_handle *trans,
-                           struct btrfs_delayed_ref_node *ref,
-                           struct btrfs_delayed_ref_head **next_ret);
 int btrfs_lookup_extent_ref(struct btrfs_trans_handle *trans,
                             struct btrfs_root *root, u64 bytenr,
                             u64 num_bytes, u32 *refs);
@@ -151,6 +158,10 @@ int btrfs_update_delayed_ref(struct btrfs_trans_handle *trans,
                           u64 parent, u64 orig_ref_root, u64 ref_root,
                           u64 orig_ref_generation, u64 ref_generation,
                           u64 owner_objectid, int pin);
+int btrfs_delayed_ref_lock(struct btrfs_trans_handle *trans,
+                           struct btrfs_delayed_ref_head *head);
+int btrfs_find_ref_cluster(struct btrfs_trans_handle *trans,
+                           struct list_head *cluster, u64 search_start);
 /*
  * a node might live in a head or a regular ref, this lets you
  * test for the proper type to use.