diff -urp 1/fs/btrfs/disk-io.c 2/fs/btrfs/disk-io.c
--- 1/fs/btrfs/disk-io.c	2009-10-15 09:33:17.811423754 +0800
+++ 2/fs/btrfs/disk-io.c	2009-10-16 09:53:42.936486569 +0800
@@ -1943,7 +1943,7 @@ struct btrfs_root *open_ctree(struct sup
 		btrfs_set_opt(fs_info->mount_opt, SSD);
 	}
 
-	if (btrfs_super_log_root(disk_super) != 0) {
+	if (0 && btrfs_super_log_root(disk_super) != 0) {
 		u64 bytenr = btrfs_super_log_root(disk_super);
 
 		if (fs_devices->rw_devices == 0) {