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authorMatthew Wilcox <mawilcox@microsoft.com>2017-11-28 22:27:14 +0300
committerMatthew Wilcox <mawilcox@microsoft.com>2018-02-06 23:07:20 +0300
commit6e6d301490936789ff57daaaaf63f44d928a4028 (patch)
treee74910fcfe54a903843c6cc4e6931ed80597dbe0
parent490645d027c5925b30c88b9c7a663850a641d15d (diff)
downloadlinux-6e6d301490936789ff57daaaaf63f44d928a4028.tar.xz
IDR test suite: Check handling negative end correctly
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>
-rw-r--r--tools/testing/radix-tree/idr-test.c1
1 files changed, 1 insertions, 0 deletions
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);