Re: [PATCH] mm, compaction: fix fast_isolate_around() to stay within boundaries

Mel Gorman
2022-11-07T15:50:13Z

On Mon, Nov 07, 2022 at 12:32:34PM +0000, Akira Naribayashi (Fujitsu) wrote:
> > Under what circumstances will this panic occur? I assume those
> > circumstnces are pretty rare, give that 6e2b7044c1992 was nearly two
> > years ago.
> >
> > Did you consider the desirability of backporting this fix into earlier
> > kernels?
>
>
> Panic can occur on systems with multiple zones in a single pageblock.
>

Please provide an example of the panic and the zoneinfo.

> The reason it is rare is that it only happens in special configurations.

How is this special configuration created?

--
Mel Gorman
SUSE Labs