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- jessie 3.16.56-1+deb8u1
BLK_QUEUE_UPDATE_DMA(9) | Block Devices | BLK_QUEUE_UPDATE_DMA(9) |
NAME¶
blk_queue_update_dma_alignment - update dma length and memory alignmentSYNOPSIS¶
void
blk_queue_update_dma_alignment(struct request_queue * q,
int mask);
ARGUMENTS¶
qthe request queue for the device
mask
alignment mask
DESCRIPTION¶
update required memory and length alignment for direct dma transactions. If the requested alignment is larger than the current alignment, then the current queue alignment is updated to the new value, otherwise it is left alone. The design of this is to allow multiple objects (driver, device, transport etc) to set their respective alignments without having them interfere.COPYRIGHT¶
May 2018 | Kernel Hackers Manual 3.16 |