From 264ca0f60becac34395f3b42171ad0cc2e53ea6e Mon Sep 17 00:00:00 2001
From: Zhao Lei <zhaolei@cn.fujitsu.com>
Date: Tue, 17 Feb 2015 17:25:51 +0800
Subject: [PATCH] btrfs: Adjust commit-transaction condition to avoid NO_SPACE
 more

If we have any chance to make a successful write, we should not give up.

This patch adjust commit-transaction condition from:
  pinned >= wanted
to
  left + pinned >= wanted

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Chris Mason <clm@fb.com>
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Reading git-format-patch failed