vm_insert_pfn — insert single pfn into user vma
int vm_insert_pfn ( | struct vm_area_struct * vma, |
| unsigned long addr, | |
unsigned long 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.