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-rw-r--r--tools/testing/radix-tree/idr-test.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/tools/testing/radix-tree/idr-test.c b/tools/testing/radix-tree/idr-test.c
index 892ef8855b02..36437ade429c 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -215,6 +215,23 @@ void idr_checks(void)
assert(idr_is_empty(&idr));
+ idr_set_cursor(&idr, INT_MAX - 3UL);
+ for (i = INT_MAX - 3UL; i < INT_MAX + 3UL; i++) {
+ struct item *item;
+ unsigned int id;
+ if (i <= INT_MAX)
+ item = item_create(i, 0);
+ else
+ item = item_create(i - INT_MAX - 1, 0);
+
+ id = idr_alloc_cyclic(&idr, item, 0, 0, GFP_KERNEL);
+ assert(id == item->index);
+ }
+
+ idr_for_each(&idr, item_idr_free, &idr);
+ idr_destroy(&idr);
+ assert(idr_is_empty(&idr));
+
for (i = 1; i < 10000; i++) {
struct item *item = item_create(i, 0);
assert(idr_alloc(&idr, item, 1, 20000, GFP_KERNEL) == i);