dax: Make sure the unlocking entry isn't locked

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I wrote the semantics in the commit message, but didn't document it in
the source code.  Use a BUG_ON instead (if any code does do this, it's
really buggy; we can't recover and it's worth taking the machine down).

Signed-off-by: Matthew Wilcox <willy@infradead.org>

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Matthew Wilcox 2018-11-09 20:09:37 -05:00

parent 6d7cd8c137

commit 7ae2ea7dc4

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