Mike Snitzer 10add84e27 dm cache metadata: fail operations if fail_io mode has been established ...

Otherwise it is possible to trigger crashes due to the metadata being
inaccessible yet these methods don't safely account for that possibility
without these checks.

Cc: stable@vger.kernel.org
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

2017-05-05 14:40:13 -04:00

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