Matthew Wilcox (Oracle) d99e22c0ea XArray: Fix splitting to non-zero orders ...

[ Upstream commit 3012110d71 ]

Splitting an order-4 entry into order-2 entries would leave the array
containing pointers to 000040008000c000 instead of 000044448888cccc.
This is a one-character fix, but enhance the test suite to check this
case.

Reported-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2021-04-16 11:43:21 +02:00

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