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IDR test suite: Check handling negative end correctly

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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>
This commit is contained in:
Matthew Wilcox 2017-11-28 14:27:14 -05:00
parent 490645d027
commit 6e6d301490
1 changed files with 1 additions and 0 deletions
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tools/testing/radix-tree/idr-test.c
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@ -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);