blk_queue_update_dma_alignment

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

blk_queue_update_dma_alignment - update dma length and memory alignment

SYNOPSIS

void blk_queue_update_dma_alignment(struct request_queue * q, int mask);

ARGUMENTS

q

the request queue for the device

mask

alignment mask

DESCRIPTION

update required memory and length aligment for direct dma transactions. If the requested alignment is larger than the current alignment, then the current queue alignment is updated to the new value, otherwise it is left alone. The design of this is to allow multiple objects (driver, device, transport etc) to set their respective alignments without having them interfere.