Hi, On Mon, Jun 08, 2020 at 04:43:57PM +0200, Arnd Bergmann wrote:
> There is another difference: get_user_pages_fast() does not return > a vm_area_struct pointer, which is where you would check the access > permissions. I suppose those pointers could not be returned to callers > that don't already hold the mmap_sem. Ok, thanks for the details, i need to familiarize better with mm. Regards afzal