vm_insert_pfn — insert single pfn into user vma
|struct vm_area_struct * vma,|
|unsigned long addr,|
|unsigned long pfn|
struct vm_area_struct * vma
user vma to map to
unsigned long addr
target user address of this page
unsigned long pfn
source kernel pfn
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.