tree 5c752a162d53af164942242d217d4cf54a98afd8
parent da35825d9a091a7a1d5824c8468168e2658333ff
author Christoph Hellwig <hch@lst.de> 1456938432 +0100
committer Jens Axboe <axboe@fb.com> 1457041390 -0700

nvme: fix max_segments integer truncation

The block layer uses an unsigned short for max_segments.  The way we
calculate the value for NVMe tends to generate very large 32-bit values,
which after integer truncation may lead to a zero value instead of
the desired outcome.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Jeff Lien <Jeff.Lien@hgst.com>
Tested-by: Jeff Lien <Jeff.Lien@hgst.com>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>