Re: [PATCH V4 2/2] mm: add swapiness= arg to memory.reclaim

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On Tue, Dec 12, 2023 at 07:05:36PM -0700, Yu Zhao wrote:
> On Tue, Dec 12, 2023 at 6:39 PM Dan Schatzberg <schatzberg.dan@xxxxxxxxx> wrote:
> >
> > Allow proactive reclaimers to submit an additional swappiness=<val>
> > argument to memory.reclaim. This overrides the global or per-memcg
> > swappiness setting for that reclaim attempt.
> >
> > For example:
> >
> > echo "2M swappiness=0" > /sys/fs/cgroup/memory.reclaim
> >
> > will perform reclaim on the rootcg with a swappiness setting of 0 (no
> > swap) regardless of the vm.swappiness sysctl setting.
> >
> > Signed-off-by: Dan Schatzberg <schatzberg.dan@xxxxxxxxx>
> 
> NAK.
> 
> Please initialize new variables properly and test code changes
> thoroughly before submission.

Could you be a bit more specific? The patch is compiling and working
locally but perhaps there's some configuration or behavior that I
haven't been testing.




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