1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 7ef78e15ce04..2514e5fcda7f 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -275,6 +275,9 @@ struct mddev_s
         atomic_t                        writes_pending; 
         request_queue_t                 *queue; /* for plugging ... */
 
+        atomic_t                        write_behind; /* outstanding async IO */
+        unsigned int                    max_write_behind; /* 0 = sync */
+
         struct bitmap                   *bitmap; /* the bitmap for the device */
         struct file                     *bitmap_file; /* the bitmap file */
         long                            bitmap_offset; /* offset from superblock of