Re: [PATCH v10] mm: vmscan: try to reclaim swapcache pages if no swap space

Michal Hocko
2023-11-28T10:16:10Z

On Tue 28-11-23 09:31:06, Huang, Ying wrote:
> Michal Hocko <mhocko@suse.com> writes:
[...]
> > Right. On the other hand we could be more aggressive when dropping the
> > swapcache. Is there any actual reason why we cannot try to folio_free_swap
> > even when mem_cgroup_swap_full == F?
>
> If there are plenty free space in swap device, why not take advantage of
> it?

Maybe a stupid question but what is the advantage of keeping around in
the swap cache?

--
Michal Hocko
SUSE Labs