From 17504584f52af944960f1ad16752aa10a0755b3b Mon Sep 17 00:00:00 2001
From: Liu Bo <bo.li.liu@oracle.com>
Date: Sun, 29 Dec 2013 21:44:50 +0800
Subject: [PATCH] Btrfs: return free space to global_rsv as much as possible

@full is not protected within global_rsv.lock, so we may think global_rsv
is already full but in fact it's not, so we miss the opportunity to return
free space to global_rsv directly when we release other block_rsvs.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
---
Reading git-format-patch failed