'\" t
.\"     Title: vm_insert_pfn
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Memory Management in Linux
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "VM_INSERT_PFN" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Memory Management in Linux"
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.SH "NAME"
vm_insert_pfn \- insert single pfn into user vma
.SH "SYNOPSIS"
.HP \w'int\ vm_insert_pfn('u
.BI "int vm_insert_pfn(struct\ vm_area_struct\ *\ " "vma" ", unsigned\ long\ " "addr" ", unsigned\ long\ " "pfn" ");"
.SH "ARGUMENTS"
.PP
\fIvma\fR
.RS 4
user vma to map to
.RE
.PP
\fIaddr\fR
.RS 4
target user address of this page
.RE
.PP
\fIpfn\fR
.RS 4
source kernel pfn
.RE
.SH "DESCRIPTION"
.PP
Similar to vm_insert_page, this allows drivers to insert individual pages they\*(Aqve allocated into a user vma\&. Same comments apply\&.
.PP
This function should only be called from a vm_ops\->fault handler, and in that case the handler should return NULL\&.
.PP
vma cannot be a COW mapping\&.
.PP
As this is called only for pages that do not currently exist, we do not need to flush old virtual caches or the TLB\&.
.SH "COPYRIGHT"
.br