BLK_QUEUE_BOUNCE_LIMIT

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Updated: 06 October 2005
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NAME

blk_queue_bounce_limit - set bounce buffer limit for queue

SYNOPSIS

"SYNOPSIS"

void blk_queue_bounce_limit (request_queue_t * q, u64 dma_addr);

ARGUMENTS

q: the request queue for the device
dma_addr: bus address limit

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 page. By default the block layer sets this to the highest numbered ``low'' memory page.

This document was created by man2html, using the manual pages.
Time: 07:07:00 GMT, October 06, 2005