blk_queue_bounce_limit

Langue: en

Autres versions - même langue

Version: May 2009 (fedora - 06/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

blk_queue_bounce_limit - set bounce buffer limit for queue

SYNOPSIS

void blk_queue_bounce_limit(struct request_queue * 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 dma_addr.