tree 93f2e9915b34192a92442fbf800d3a9b47819909
parent 6da127ad0918f93ea93678dad62ce15ffed18797
author Pete Wyckoff <pw@osc.edu> 1199200982 -0500
committer Jens Axboe <jens.axboe@oracle.com> 1201511086 +0100

block: allow queue dma_alignment of zero

Let queue_dma_alignment return 0 if it was specifically set to 0.
This permits devices with no particular alignment restrictions to
use arbitrary user space buffers without copying.

Signed-off-by: Pete Wyckoff <pw@osc.edu>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>