Re: [PATCHv2 1/2] mm: Fix vma_is_anonymous() false-positives

From: Oleg Nesterov
Date: Thu Jul 12 2018 - 12:20:45 EST


Kirill, I am not trying to review this change (but it looks good to me),
just a silly question...

On 07/12, Kirill A. Shutemov wrote:
>
> This can be fixed by assigning anonymous VMAs own vm_ops and not relying
> on it being NULL.

I agree, this makes sense, but...

> If ->mmap() failed to set ->vm_ops, mmap_region() will set it to
> dummy_vm_ops.

Shouldn't this change alone fix the problem?

Oleg.