From 38c135af8e22baf2ef3ebf9b213e398997a90946 Mon Sep 17 00:00:00 2001
From: Miao Xie <miaox@cn.fujitsu.com>
Date: Mon, 4 Nov 2013 23:13:21 +0800
Subject: Btrfs: wait for the ordered extent only when we want

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 5e0e6bc..2564cbf 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -4047,7 +4047,8 @@ static void shrink_delalloc(struct btrfs_root *root, u64 to_reclaim, u64 orig,
 	if (delalloc_bytes == 0) {
 		if (trans)
 			return;
-		btrfs_wait_all_ordered_extents(root->fs_info);
+		if (wait_ordered)
+			btrfs_wait_all_ordered_extents(root->fs_info);
 		return;
 	}
 
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