'\" t
.\"     Title: bio_copy_kern
.\"    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: The Linux VFS
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "BIO_COPY_KERN" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "The Linux VFS"
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.SH "NAME"
bio_copy_kern \- copy kernel address into bio
.SH "SYNOPSIS"
.HP \w'struct\ bio\ *\ bio_copy_kern('u
.BI "struct bio * bio_copy_kern(struct\ request_queue\ *\ " "q" ", void\ *\ " "data" ", unsigned\ int\ " "len" ", gfp_t\ " "gfp_mask" ", int\ " "reading" ");"
.SH "ARGUMENTS"
.PP
\fIq\fR
.RS 4
the struct request_queue for the bio
.RE
.PP
\fIdata\fR
.RS 4
pointer to buffer to copy
.RE
.PP
\fIlen\fR
.RS 4
length in bytes
.RE
.PP
\fIgfp_mask\fR
.RS 4
allocation flags for bio and page allocation
.RE
.PP
\fIreading\fR
.RS 4
data direction is READ
.RE
.SH "DESCRIPTION"
.PP
copy the kernel address into a bio suitable for io to a block device\&. Returns an error pointer in case of error\&.
.SH "COPYRIGHT"
.br