vm_insert_pfn (9) - Linux Man Pages

vm_insert_pfn: insert single pfn into user vma

NAME

vm_insert_pfn - insert single pfn into user vma

SYNOPSIS

int vm_insert_pfn(struct vm_area_struct vma, unsigned long addr, unsigned long pfn);

ARGUMENTS

vma

user vma to map to

addr

target user address of this page

pfn

source kernel pfn

DESCRIPTION

Similar to vm_insert_page, this allows drivers to insert individual pages they've allocated into a user vma. Same comments apply.

This function should only be called from a vm_ops->fault handler, and in that case the handler should return NULL.

vma cannot be a COW mapping.

As this is called only for pages that do not currently exist, we do not need to flush old virtual caches or the TLB.

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