debug make_group_desc_list

extractmd/extractmd.c

@@ -96,18 +96,18 @@ static int extractmd_ioctl(struct inode *inode, struct file *f, struct extractmd
 	md.gd_list = make_group_desc_list(sb);
 	struct extractmd_group_desc_list *p = md.gd_list;
 
-	printk("%lu\n",(unsigned long)p->group);
-	p = p->next;
+	// printk("%lu\n",(unsigned long)p->group_desc.bg_inode_table_lo);
+	// p = p->next;
 
-	if(p == NULL)
-		return 0;
+	// if(p == NULL)
+	// 	return 0;
 
-	printk("%lu\n",(unsigned long)p->group);
-	p = p->next;
+	// printk("%lu\n",(unsigned long)p->group_desc.bg_inode_table_lo);
+	// p = p->next;
 
-	if(p == NULL)
-		return 0;
-	printk("%lu\n",(unsigned long)p->group);
+	// if(p == NULL)
+	// 	return 0;
+	// printk("%lu\n",(unsigned long)p->group_desc.bg_inode_table_lo);
 
 
 
@@ -331,21 +331,25 @@ static struct ext4_inode *extractmd_get_ext4_inode(struct super_block *sb, unsig
 
 static struct extractmd_group_desc_list *make_group_desc_list(struct super_block *sb)
 {
-	unsigned int i = 0;
+	unsigned int i;
 	struct ext4_sb_info *sbi = EXT4_SB(sb);
 	ext4_group_t nr_group = sbi->s_groups_count;
 
 	struct extractmd_group_desc_list *head = NULL;
 
-	for(i = 0; i < nr_group; i++)
+	for(i = nr_group-1; ; i--)
 	{
 		struct extractmd_group_desc_list *p = (struct extractmd_group_desc_list *)kmalloc(sizeof(struct extractmd_group_desc_list), GFP_KERNEL);
 		p->group_desc = *(struct extractmd_group_desc *)extractmd_get_group_desc(sb, i);
 		p->group = i;
 		p->next = head;
 		head = p;
+		
+		if (i == 0)
+			break;
 	}
 
+
 	return head;
 }