From caaf7a29d31da21bb8d8200d5e42d1c93d3c6e00 Mon Sep 17 00:00:00 2001
From: Tao Ma <boyu.mt@taobao.com>
Date: Mon, 11 Jul 2011 18:42:42 -0400
Subject: [PATCH] ext4: Fix a double free of sbi->s_group_info in
 ext4_mb_init_backend

If we meet with an error in ext4_mb_add_groupinfo, we kfree
sbi->s_group_info[group >> EXT4_DESC_PER_BLOCK_BITS(sb)], but fail to
reset it to NULL. So the caller ext4_mb_init_backend will try to kfree
it again and causes a double free. So fix it by resetting it to NULL.

Some typo in comments of mballoc.c are also changed.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---
Reading git-format-patch failed