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)