---
name: "blk_queue_ordered"
section: "9"
platform: "linux"
package: "linux-manual-2.6.32"
version: "2.6.32-48squeeze6"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/blk_queue_ordered"
---

# blk\_queue\_ordered(9)

does this queue support ordered writes

## NAME

blk\_queue\_ordered - does this queue support ordered writes

## SYNOPSIS

**int blk\_queue\_ordered(struct request\_queue \*** *q***, unsigned** *ordered***, prepare\_flush\_fn \*** *prepare\_flush\_fn***);**

## ARGUMENTS

*q*

the request queue

*ordered*

one of QUEUE\_ORDERED\_\*

*prepare\_flush\_fn*

rq setup helper for cache flush ordered writes

## DESCRIPTION

For journalled file systems, doing ordered writes on a commit block instead of explicitly doing wait\_on\_buffer (which is bad for performance) can be a big win. Block drivers supporting this feature should call this function and indicate so.

## COPYRIGHT