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(parent: da35825) | patch
nvme: fix max_segments integer truncation
authorChristoph Hellwig <hch@lst.de>
Wed, 2 Mar 2016 17:07:12 +0000 (18:07 +0100)
committerJens Axboe <axboe@fb.com>
Thu, 3 Mar 2016 21:43:10 +0000 (14:43 -0700)
commit45686b6198bd824f083ff5293f191d78db9d708a
tree5c752a162d53af164942242d217d4cf54a98afd8tree
parentda35825d9a091a7a1d5824c8468168e2658333ffcommit | diff
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>
drivers/nvme/host/core.c diff | blob | history
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