1BLK_QUEUE_DMA_ALIGNM(9)          Block Devices         BLK_QUEUE_DMA_ALIGNM(9)
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NAME

6       blk_queue_dma_alignment - set dma length and memory alignment
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SYNOPSIS

9       void blk_queue_dma_alignment(struct request_queue * q, int mask);
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ARGUMENTS

12       q
13           the request queue for the device
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15       mask
16           alignment mask
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DESCRIPTION

19       set required memory and length alignment for direct dma transactions.
20       this is used when building direct io requests for the queue.
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23Kernel Hackers Manual 2.6.         June 2019           BLK_QUEUE_DMA_ALIGNM(9)
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