From f29844623de29a12358d7fba35d0959465b64adf Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Thu, 10 Apr 2008 16:19:33 -0400
Subject: Btrfs: Write out all super blocks on commit, and bring back proper
 barrier support

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---
 fs/btrfs/volumes.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'fs/btrfs/volumes.h')

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index 3d5d0a9cb82..89548837a1c 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -21,9 +21,12 @@
 
 #include <linux/bio.h>
 
+struct buffer_head;
 struct btrfs_device {
 	struct list_head dev_list;
 	struct btrfs_root *dev_root;
+	struct buffer_head *pending_io;
+	int barriers;
 	spinlock_t io_lock;
 
 	struct block_device *bdev;
-- 
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