On 2/7/20 9:08 PM, Jason Gunthorpe wrote:
> On Fri, Jan 10, 2020 at 07:03:12PM +, Joao Martins wrote:
>> From: Nikita Leshenko
>>
>> Unconditionally interpreting vm_pgoff as a PFN is incorrect.
>>
>> VMAs created by /dev/mem do this, but in general VM_PFNMAP just means
>> that the VMA doesn't
From: Nikita Leshenko
Unconditionally interpreting vm_pgoff as a PFN is incorrect.
VMAs created by /dev/mem do this, but in general VM_PFNMAP just means
that the VMA doesn't have an associated struct page and is being managed
directly by something other than the core mmu.
Use follow_pfn like
