'\" t
.\"     Title: bio_add_page
.\"    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_ADD_PAGE" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "The Linux VFS"
.\" -----------------------------------------------------------------
.\" * 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"
bio_add_page \- attempt to add page to bio
.SH "SYNOPSIS"
.HP \w'int\ bio_add_page('u
.BI "int bio_add_page(struct\ bio\ *\ " "bio" ", struct\ page\ *\ " "page" ", unsigned\ int\ " "len" ", unsigned\ int\ " "offset" ");"
.SH "ARGUMENTS"
.PP
\fIbio\fR
.RS 4
destination bio
.RE
.PP
\fIpage\fR
.RS 4
page to add
.RE
.PP
\fIlen\fR
.RS 4
vec entry length
.RE
.PP
\fIoffset\fR
.RS 4
vec entry offset
.RE
.SH "DESCRIPTION"
.PP
Attempt to add a page to the bio_vec maplist\&. This can fail for a number of reasons, such as the bio being full or target block device limitations\&. The target block device must allow bio\*(Aqs up to PAGE_SIZE, so it is always possible to add a single page to an empty bio\&.
.SH "COPYRIGHT"
.br