Re: [PATCH 3/3] mm: delete unused MMF_OOM_VICTIM flag

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On Tue, May 10, 2022 at 6:08 AM Michal Hocko <mhocko@xxxxxxxx> wrote:
>
> On Mon 09-05-22 20:00:14, Suren Baghdasaryan wrote:
> > With the last usage of MMF_OOM_VICTIM in exit_mmap gone, this flag is
> > now unused and can be removed.
> >
> > Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
>
> LGTM
> Acked-by: Michal Hocko <mhocko@xxxxxxxx>
>
> One question below
> [...]
> > diff --git a/include/linux/sched/coredump.h b/include/linux/sched/coredump.h
> > index 4d9e3a656875..746f6cb07a20 100644
> > --- a/include/linux/sched/coredump.h
> > +++ b/include/linux/sched/coredump.h
> > @@ -70,7 +70,6 @@ static inline int get_dumpable(struct mm_struct *mm)
> >  #define MMF_UNSTABLE         22      /* mm is unstable for copy_from_user */
> >  #define MMF_HUGE_ZERO_PAGE   23      /* mm has ever used the global huge zero page */
> >  #define MMF_DISABLE_THP              24      /* disable THP for all VMAs */
> > -#define MMF_OOM_VICTIM               25      /* mm is the oom victim */
> >  #define MMF_OOM_REAP_QUEUED  26      /* mm was queued for oom_reaper */
> >  #define MMF_MULTIPROCESS     27      /* mm is shared between processes */
>
> Have you consider renumbering the follow up flags so that we do not have
> holes in there. Nothing really important but it can confuse somebody in
> the future.

Missed this note until now. I will renumber the constants to avoid confusion.
Thanks,
Suren.

>
> --
> Michal Hocko
> SUSE Labs




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