XArray: add cmpxchg order test
XArray multi-index entries do not keep track of the order stored once
the entry is being marked as used with cmpxchg (conditionally replaced
with NULL). Add a test to check the order is actually lost. The test
also verifies the order and entries for all the tied indexes before and
after the NULL replacement with xa_cmpxchg.
Add another entry at 1 << order that keeps the node around and the order
information for the NULL-entry after xa_cmpxchg.
Signed-off-by: Daniel Gomez <da.gomez@samsung.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
1 file changed
