idr: don't need to shink the free list when idr_remove()

 * pointer or what ever, we treat it as a (void *).  You can pass this

 * id to a user for him to pass back at a later time.  You then pass

 * that id to this code and it returns your pointer.

 * You can release ids at any time. When all ids are released, most of

 * the memory is returned (we keep MAX_IDR_FREE) in a local pool so we

 * don't need to go to the memory "store" during an id allocate, just

 * so you don't need to be too concerned about locking and conflicts

 * with the slab allocator.

 */

#ifndef TEST                        // to test in user space...

		bitmap_clear(to_free->bitmap, 0, IDR_SIZE);

		free_layer(idp, to_free);

	}

	while (idp->id_free_cnt >= MAX_IDR_FREE) {

		p = get_from_free_list(idp);

		/*

		 * Note: we don't call the rcu callback here, since the only

		 * layers that fall into the freelist are those that have been

		 * preallocated.

		 */

		kmem_cache_free(idr_layer_cache, p);

	}

	return;

}

EXPORT_SYMBOL(idr_remove);