From d9b0218f6cb682aa6a4ada2bfc5a25fdf3018563 Mon Sep 17 00:00:00 2001
From: Liu Bo <liubo2009@cn.fujitsu.com>
Date: Thu, 16 Feb 2012 18:34:39 +0800
Subject: [PATCH] Btrfs: fix a bug on overcommit stuff

When overcommitting, we should check the sum of pinned space and
bytes for delayed item.

Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
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Reading git-format-patch failed