static struct inode *isofs_alloc_inode(struct super_block *sb)
{
	struct iso_inode_info *ei;
	ei = kmem_cache_alloc(isofs_inode_cachep, GFP_KERNEL);
	if (!ei)
		return NULL;
	return &ei->vfs_inode;
}
static struct inode *isofs_alloc_inode(struct super_block *sb)
{
	struct iso_inode_info *ei;
	ei = kmem_cache_alloc(isofs_inode_cachep, GFP_KERNEL);
	if (!ei)
		return NULL;
	return &ei->vfs_inode;
}