blk_queue_bounce_limit(9) - phpMan
BLK_QUEUE_BOUNCE_LIM(9) Block Devices BLK_QUEUE_BOUNCE_LIM(9)
NAME
blk_queue_bounce_limit - set bounce buffer limit for queue
SYNOPSIS
void blk_queue_bounce_limit(struct request_queue * q, u64 max_addr);
ARGUMENTS
q
the request queue for the device
max_addr
the maximum address the device can handle
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 max_addr.
COPYRIGHT
Kernel Hackers Manual 4.8. January 2017 BLK_QUEUE_BOUNCE_LIM(9)
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