1 files changed, 27 insertions, 0 deletions

diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h
index 1f26792683ed..9d8da53f6dd9 100644
--- a/fs/btrfs/async-thread.h
+++ b/fs/btrfs/async-thread.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2007 Oracle.  All rights reserved.
+ * Copyright (C) 2014 Fujitsu.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public
@@ -118,4 +119,30 @@ void btrfs_init_workers(struct btrfs_workers *workers, char *name, int max,
                         struct btrfs_workers *async_starter);
 void btrfs_requeue_work(struct btrfs_work *work);
 void btrfs_set_work_high_prio(struct btrfs_work *work);
+
+struct btrfs_workqueue_struct;
+
+struct btrfs_work_struct {
+        void (*func)(struct btrfs_work_struct *arg);
+        void (*ordered_func)(struct btrfs_work_struct *arg);
+        void (*ordered_free)(struct btrfs_work_struct *arg);
+
+        /* Don't touch things below */
+        struct work_struct normal_work;
+        struct list_head ordered_list;
+        struct btrfs_workqueue_struct *wq;
+        unsigned long flags;
+};
+
+struct btrfs_workqueue_struct *btrfs_alloc_workqueue(char *name,
+                                                     int flags,
+                                                     int max_active);
+void btrfs_init_work(struct btrfs_work_struct *work,
+                     void (*func)(struct btrfs_work_struct *),
+                     void (*ordered_func)(struct btrfs_work_struct *),
+                     void (*ordered_free)(struct btrfs_work_struct *));
+void btrfs_queue_work(struct btrfs_workqueue_struct *wq,
+                      struct btrfs_work_struct *work);
+void btrfs_destroy_workqueue(struct btrfs_workqueue_struct *wq);
+void btrfs_workqueue_set_max(struct btrfs_workqueue_struct *wq, int max);
 #endif