'\" t
.\"     Title: blk_queue_flush
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: Block Devices
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "BLK_QUEUE_FLUSH" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Block Devices"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
blk_queue_flush \- configure queue\*(Aqs cache flush capability
.SH "SYNOPSIS"
.HP \w'void\ blk_queue_flush('u
.BI "void blk_queue_flush(struct\ request_queue\ *\ " "q" ", unsigned\ int\ " "flush" ");"
.SH "ARGUMENTS"
.PP
\fIq\fR
.RS 4
the request queue for the device
.RE
.PP
\fIflush\fR
.RS 4
0, REQ_FLUSH or REQ_FLUSH | REQ_FUA
.RE
.SH "DESCRIPTION"
.PP
Tell block layer cache flush capability of
\fIq\fR\&. If it supports flushing, REQ_FLUSH should be set\&. If it supports bypassing write cache for individual writes, REQ_FUA should be set\&.
.SH "COPYRIGHT"
.br