nvme: factor out a nvme_unmap_data helper

This is the counter part to nvme_map_data.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2015-11-26 10:51:23 +01:00 • committed by Jens Axboe
commit d4f6c3aba5