radix tree test suite: Run iteration tests for longer

If the -l flag is set, run the tests for 100 seconds each instead of
the normal 10 seconds.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Rehas Sachdeva <aquannie@gmail.com>
diff --git a/tools/testing/radix-tree/main.c b/tools/testing/radix-tree/main.c
index 86de448..b829127 100644
--- a/tools/testing/radix-tree/main.c
+++ b/tools/testing/radix-tree/main.c
@@ -365,8 +365,8 @@
 	regression1_test();
 	regression2_test();
 	regression3_test();
-	iteration_test(0, 10);
-	iteration_test(7, 20);
+	iteration_test(0, 10 + 90 * long_run);
+	iteration_test(7, 10 + 90 * long_run);
 	single_thread_tests(long_run);
 
 	/* Free any remaining preallocated nodes */