static void release_inode_number(unsigned int inum)
{
	int id = (inum - PROC_DYNAMIC_FIRST) | ~MAX_ID_MASK;

	spin_lock(&proc_inum_lock);
	idr_remove(&proc_inum_idr, id);
	spin_unlock(&proc_inum_lock);
}
static void release_inode_number(unsigned int inum)
{
	int id = (inum - PROC_DYNAMIC_FIRST) | ~MAX_ID_MASK;

	spin_lock(&proc_inum_lock);
	idr_remove(&proc_inum_idr, id);
	spin_unlock(&proc_inum_lock);
}