Re: [PATCH] mm/page_alloc.c: Avoid infinite retries caused by cpuset race

[Suren Baghdasaryan <surenb@google.com>]

On Tue, Apr 22, 2025 at 5:11 PM Andrew Morton <akpm@linux-foundation.org> wrote:
>
> On Tue, 22 Apr 2025 20:10:06 +0800 Tianyang Zhang <zhangtianyang@loongson.cn> wrote:
>
> >
> > ...
> >
> > >>
> > >> Simultaneously starting multiple cpuset01 from LTP can quickly
> > >> reproduce this issue on a multi node server when the maximum
> > >> memory pressure is reached and the swap is enabled
> > >>
> > >> Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn>
> > >> ---
> > > What commit does it fix and should it be backported to -stable?
> > >
> > > There's a new 'MEMORY MANAGEMENT - PAGE ALLOCATOR' entry (only in
> > > Andrew's mm.git repository now).
> > >
> > > Let's Cc the page allocator folks here!
> >
> > We first identified this issue in 6.6.52-stable , and through root cause
> > analysis,
> >
> > it appears the problem may have existed for a significant period.
> >
> > However It is recommended that the fix should be backported to at least
> > Linux kernel versions after 6.6-stable
>
> OK, thanks,
>
> This has been in mm-hotfixes-unstable for six days.  Hopefully we'll
> see some review activity soon (please).

I reviewed and provided my feedback but saw neither a reply nor a
respin with proposed changes.

>