'\" t
.\"     Title: __get_request
.\"    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 "__GET_REQUEST" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "Block Devices"
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.SH "NAME"
__get_request \- get a free request
.SH "SYNOPSIS"
.HP \w'struct\ request\ *\ __get_request('u
.BI "struct request * __get_request(struct\ request_list\ *\ " "rl" ", int\ " "rw_flags" ", struct\ bio\ *\ " "bio" ", gfp_t\ " "gfp_mask" ");"
.SH "ARGUMENTS"
.PP
\fIrl\fR
.RS 4
request list to allocate from
.RE
.PP
\fIrw_flags\fR
.RS 4
RW and SYNC flags
.RE
.PP
\fIbio\fR
.RS 4
bio to allocate request for (can be
\fBNULL\fR)
.RE
.PP
\fIgfp_mask\fR
.RS 4
allocation mask
.RE
.SH "DESCRIPTION"
.PP
Get a free request from
\fIq\fR\&. This function may fail under memory pressure or if
\fIq\fR
is dead\&.
.PP
Must be callled with
\fIq\fR\->queue_lock held and, Returns
\fBNULL\fR
on failure, with
\fIq\fR\->queue_lock held\&. Returns !\fBNULL\fR
on success, with
\fIq\fR\->queue_lock *not held*\&.
.SH "COPYRIGHT"
.br