vm_insert_pfn (9) - Linux Manuals
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 longaddr, 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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