dm round robin: do not use this_cpu_ptr() without having preemption disabled
Use local_irq_save() to disable preemption before calling this_cpu_ptr(). Reported-by:Benjamin Block <bblock@linux.vnet.ibm.com> Fixes: b0b477c7 ("dm round robin: use percpu 'repeat_count' and 'current_path'") Cc: stable@vger.kernel.org # 4.6+ Suggested-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
Mike Snitzer <snitzer@redhat.com>
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