Most smartarrays will tolerate it, but some new ones don't.
Signed-off-by: NStephen M. Cameron <scameron@beardog.cce.hp.com>

Note: this is a regression caused by commit 1ddd5049
Cc: stable@kernel.org
Signed-off-by: NJens Axboe <jaxboe@fusionio.com>