diff mbox series

[v2,04/17] IDR test suite: Check handling negative end correctly

Message ID 20171129201922.24370-5-willy@infradead.org
State Not Applicable, archived
Delegated to: David Miller
Headers show
Series IDR changes for v4.15-rc1 | expand

Commit Message

Matthew Wilcox Nov. 29, 2017, 8:19 p.m. UTC 
From: Matthew Wilcox <mawilcox@microsoft.com>

One of the charming quirks of the idr_alloc() interface is that you
can pass a negative end and it will be interpreted as "maximum".  Ensure
we don't break that.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
---
 tools/testing/radix-tree/idr-test.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/tools/testing/radix-tree/idr-test.c b/tools/testing/radix-tree/idr-test.c
index 193450b29bf0..892ef8855b02 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -207,6 +207,7 @@  void idr_checks(void)
 		assert(idr_alloc(&idr, item, i, i + 10, GFP_KERNEL) == i);
 	}
 	assert(idr_alloc(&idr, DUMMY_PTR, i - 2, i, GFP_KERNEL) == -ENOSPC);
+	assert(idr_alloc(&idr, DUMMY_PTR, i - 2, i + 10, GFP_KERNEL) == -ENOSPC);
 
 	idr_for_each(&idr, item_idr_free, &idr);
 	idr_destroy(&idr);