blk_queue_bounce_limit

Langue: en

Autres versions - même langue

Version: October 2010 (fedora - 01/12/10)

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_mask);

ARGUMENTS

q

the request queue for the device

dma_mask

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 dma_mask.