diff --git a/include/linux/raid/bitmap.h b/include/linux/raid/bitmap.h
index 9c8907c..63df898 100644
--- a/include/linux/raid/bitmap.h
+++ b/include/linux/raid/bitmap.h
@@ -140,6 +140,7 @@
 enum bitmap_state {
 	BITMAP_ACTIVE = 0x001, /* the bitmap is in use */
 	BITMAP_STALE  = 0x002,  /* the bitmap file is out of date or had -EIO */
+	BITMAP_WRITE_ERROR = 0x004, /* A write error has occurred */
 	BITMAP_HOSTENDIAN = 0x8000,
 };
 
@@ -244,9 +245,9 @@
 	unsigned long daemon_lastrun; /* jiffies of last run */
 	unsigned long daemon_sleep; /* how many seconds between updates? */
 
-	spinlock_t write_lock;
-	struct list_head complete_pages;
-	mempool_t *write_pool;
+	atomic_t pending_writes; /* pending writes to the bitmap file */
+	wait_queue_head_t write_wait;
+
 };
 
 /* the bitmap API */