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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 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.

COPYRIGHT

May 2018 Kernel Hackers Manual 3.16