From: Zheng Liu <wenqing.lz@taobao.com>
Date: Fri, 9 Nov 2012 02:57:30 +0000 (-0500)
Subject: ext4: initialize extent status tree
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=9a26b66175e1c221f39bbe09e2e1d0a31a14ba6d;p=openwrt%2Fstaging%2Fblogic.git

ext4: initialize extent status tree

Let ext4 initialize extent status tree of an inode.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: Allison Henderson <achender@linux.vnet.ibm.com>
Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 18e89fafebd1..6791d091fbc7 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -943,6 +943,8 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
 	memset(&ei->i_cached_extent, 0, sizeof(struct ext4_ext_cache));
 	INIT_LIST_HEAD(&ei->i_prealloc_list);
 	spin_lock_init(&ei->i_prealloc_lock);
+	ext4_es_init_tree(&ei->i_es_tree);
+	rwlock_init(&ei->i_es_lock);
 	ei->i_reserved_data_blocks = 0;
 	ei->i_reserved_meta_blocks = 0;
 	ei->i_allocated_meta_blocks = 0;