BLK_QUEUE_BOUNCE_LIMIT

Section: (9)
Updated: 17 July 2003
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NAME

blk_queue_bounce_limit - set bounce buffer limit for queue  

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.  

ABOUT THIS DOCUMENT

This documentation is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

For more details see the file COPYING in the source distribution of Linux.

If you have comments on the formatting of this manpage, then please contact Michael Still (mikal@stillhq.com).

This documentation was generated with kernel version 2.5.74.


 

Index

NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
ABOUT THIS DOCUMENT

This document was created by man2html, using the manual pages.
Time: 03:18:34 GMT, July 17, 2003