From 6fba2bdb9b37eaa5374a35e8e9d44e7129bd3a53 Mon Sep 17 00:00:00 2001
From: Sergei Trofimovich <slyfox@gentoo.org>
Date: Fri, 20 May 2011 20:20:30 +0000
Subject: [PATCH] --- yaml --- r: 252326 b: refs/heads/master c:
 c4f675cd40d955d539180506c09515c90169b15b h: refs/heads/master v: v3

---
 [refs]                       | 2 +-
 trunk/fs/btrfs/extent-tree.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 440ac08ba441..7a996ffe71ac 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0f3b708c11914b684d17fed975eed19db902a8de
+refs/heads/master: c4f675cd40d955d539180506c09515c90169b15b
diff --git a/trunk/fs/btrfs/extent-tree.c b/trunk/fs/btrfs/extent-tree.c
index 9ee6bd55e16c..9f5fdd37451d 100644
--- a/trunk/fs/btrfs/extent-tree.c
+++ b/trunk/fs/btrfs/extent-tree.c
@@ -3425,6 +3425,10 @@ static int shrink_delalloc(struct btrfs_trans_handle *trans,
 	if (reserved == 0)
 		return 0;
 
+	/* nothing to shrink - nothing to reclaim */
+	if (root->fs_info->delalloc_bytes == 0)
+		return 0;
+
 	max_reclaim = min(reserved, to_reclaim);
 
 	while (loops < 1024) {