From 18cd8ea6df32e72548a4b055cba54d1a898c81e5 Mon Sep 17 00:00:00 2001
From: Miao Xie <miaox@cn.fujitsu.com>
Date: Mon, 4 Nov 2013 23:13:22 +0800
Subject: [PATCH] Btrfs: pick up the code for the item number calculation in
 flush_space()

This patch picked up the code that was used to calculate the number of
the items for which we need reserve space, and we will use it in the next
patch.

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>
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Reading git-format-patch failed