From 6c255e67cec1c38a0569c7f823eba63f9449ccf8 Mon Sep 17 00:00:00 2001
From: Miao Xie <miaox@cn.fujitsu.com>
Date: Thu, 6 Mar 2014 13:55:01 +0800
Subject: [PATCH] Btrfs: don't flush all delalloc inodes when we doesn't get
 s_umount lock

We needn't flush all delalloc inodes when we doesn't get s_umount lock,
or we would make the tasks wait for a long time.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
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