[PATCH 2/2 bigalloc] e2fsprogs: use s_log_block_size to decide s_first_data_block in ext2fs_initialize

[Robin Dong <hao.bigrat@gmail.com>]

From: Robin Dong <sanbai@taobao.com>

After mke2fs with 1024 block size:

#misc/mke2fs -m 0 -O ^resize_inode,extent,meta_bg,bigalloc -b 1024 /dev/sda

kernel reports:

[74687.352702] EXT4-fs (loop0): ext4_check_descriptors: Inode bitmap for group 0 not in group (block 524288)!
[74687.355534] EXT4-fs (loop0): group descriptors corrupted!

when mount /dev/sda.

The reason is mke2fs set s_first_data_block to 0 by mistake just because
s_log_cluster_size is 4 when s_log_block_size==0.

This patch is based on "next" branch of e2fsprogs.

Signed-off-by: Robin Dong <sanbai@taobao.com>
---
 lib/ext2fs/initialize.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/lib/ext2fs/initialize.c b/lib/ext2fs/initialize.c
index ccc2dee..c2344a0 100644
--- a/lib/ext2fs/initialize.c
+++ b/lib/ext2fs/initialize.c
@@ -155,7 +155,7 @@ errcode_t ext2fs_initialize(const char *name, int flags,
 	} else
 		super->s_log_cluster_size = super->s_log_block_size;
 
-	set_field(s_first_data_block, super->s_log_cluster_size ? 0 : 1);
+	set_field(s_first_data_block, super->s_log_block_size ? 0 : 1);
 	set_field(s_max_mnt_count, 0);
 	set_field(s_errors, EXT2_ERRORS_DEFAULT);
 	set_field(s_feature_compat, 0);
-- 
1.7.3.2