1. NAME▲

blk_queue_bounce_limit - set bounce buffer limit for queue

2. SYNOPSIS ▲

void blk_queue_bounce_limit(struct request_queue *  q , u64  dma_mask );

3. ARGUMENTS ▲

q
    the request queue for the device

dma_mask
    the maximum address the device can handle

4. DESCRIPTION ▲

Different hardware can have different requirements as to what pages it can do I/O directly to. A low level driver can call blk_queue_bounce_limit to have lower memory pages allocated as bounce buffers for doing I/O to pages residing above dma_mask.

5. COPYRIGHT ▲