tree e74910fcfe54a903843c6cc4e6931ed80597dbe0
parent 490645d027c5925b30c88b9c7a663850a641d15d
author Matthew Wilcox <mawilcox@microsoft.com> 1511897234 -0500
committer Matthew Wilcox <mawilcox@microsoft.com> 1517947640 -0500

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>