From: Miao Xie <miaox@cn.fujitsu.com>
Date: Mon, 4 Nov 2013 15:13:22 +0000 (+0800)
Subject: Btrfs: pick up the code for the item number calculation in flush_space()
X-Git-Tag: v3.13-rc1~85^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=18cd8ea6df32e72548a4b055cba54d1a898c81e5;p=pandora-kernel.git

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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