fc->sb = sb;
if (file->private_data) { free_conn(fc); fc = ERR_PTR(-EINVAL); } else { file->private_data = fc; fc->sb = sb; fc->file = file; }
static struct fuse_conn *get_conn(struct file *file, struct super_block *sb){	struct fuse_conn *fc;	fc = new_conn();	if (fc == NULL)		return NULL;	spin_lock(&fuse_lock);	fc->sb = sb;	spin_unlock(&fuse_lock);	return fc;}