Matthew Wilcox 6d7cd8c137 dax: Remove optimisation from dax_lock_mapping_entry ...

Skipping some of the revalidation after we sleep can lead to returning
a mapping which has already been freed.  Just drop this optimisation.

Reported-by: Dan Williams <dan.j.williams@intel.com>
Fixes: 9f32d22130 ("dax: Convert dax_lock_mapping_entry to XArray")
Signed-off-by: Matthew Wilcox <willy@infradead.org>

2018-11-16 16:38:49 -05:00

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