block: allow queue dma_alignment of zero

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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>

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Pete Wyckoff 2008-01-01 10:23:02 -05:00 • committed by Jens Axboe

parent 6da127ad09

commit 482eb68916

1 changed files with 1 additions and 6 deletions

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7

include/linux/blkdev.h

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