From 65aa13ce5fd3b009f9ee87f368db5e8a16819180 Mon Sep 17 00:00:00 2001
From: Yongqiang Yang <xiaoqiangnk@gmail.com>
Date: Tue, 26 Jul 2011 21:51:08 -0400
Subject: [PATCH] --- yaml --- r: 262122 b: refs/heads/master c:
 4740b830ed5720ade6c780dbf3fdfe9089b3552d h: refs/heads/master v: v3

---
 [refs]                  | 2 +-
 trunk/fs/ext4/mballoc.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 66ada4ff176f..182ccdccbd34 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cc7365dfe48cb2191f1572bf69e30d3e58716313
+refs/heads/master: 4740b830ed5720ade6c780dbf3fdfe9089b3552d
diff --git a/trunk/fs/ext4/mballoc.c b/trunk/fs/ext4/mballoc.c
index dbe429567eb3..b6ef4da39ce3 100644
--- a/trunk/fs/ext4/mballoc.c
+++ b/trunk/fs/ext4/mballoc.c
@@ -4691,6 +4691,9 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
 
 	ext4_debug("Adding block(s) %llu-%llu\n", block, block + count - 1);
 
+	if (count == 0)
+		return 0;
+
 	ext4_get_group_no_and_offset(sb, block, &block_group, &bit);
 	/*
 	 * Check to see if we are freeing blocks across a group