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| VM_INSERT_PFN(9) | Memory Management in Linux | VM_INSERT_PFN(9) |
NAME¶
vm_insert_pfn - insert single pfn into user vmaSYNOPSIS¶
int vm_insert_pfn(struct vm_area_struct * vma, unsigned long addr, unsigned long pfn);
ARGUMENTS¶
vmauser 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.
COPYRIGHT¶
| April 2019 | Kernel Hackers Manual 4.9. |