Re: [PATCH v2 4/6] mm: lock vma explicitly before doing vm_flags_reset and vm_flags_reset_once

[Suren Baghdasaryan]

On Wed, Aug 2, 2023 at 11:54 AM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Wed, 2 Aug 2023 at 11:09, Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
> >
> > Ok, IOW the vma would be already locked before mmap() is called...
>
> Yup.
>
> > Just to confirm, you are suggesting to remove vma_start_write() call
> > from hfi1_file_mmap() and let vm_flags_reset() generate an assertion
> > if it's ever called with an unlocked vma, correct?
>
> Correct.

Got it. Will update in the next version. Thanks!

>
>                Linus
>