blk_queue_dma_alignment
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## Name

blk_queue_dma_alignment — set dma length and memory alignment

## Synopsis

`void blk_queue_dma_alignment (` | struct request_queue * | q,
| int | mask`)`;

## Arguments

`q`

  the request queue for the device

`mask`

  alignment mask

## description

set required memory and length aligment for direct dma transactions. this is used when buiding direct io requests for the queue.

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