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Query: blk_queue_dma_alignment

OS: centos

Section: 9

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BLK_QUEUE_DMA_ALIGNM(9) 					   Block Devices					   BLK_QUEUE_DMA_ALIGNM(9)

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 alignment for direct dma transactions. this is used when building direct io requests for the queue.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   BLK_QUEUE_DMA_ALIGNM(9)

centos man page for blk_queue_dma_alignment