Re: [PATCH v2 2/2] mm/vmpressure: split v1 userspace eventfd code into vmpressure-v1.c

[Michal Koutný]

On Mon, Jun 29, 2026 at 05:59:37AM -0700, Usama Arif <usama.arif@xxxxxxxxx> wrote:
> This split is the first step toward eventually making vmpressure
> CONFIG_MEMCG_V1 only. The v2 in-kernel socket pressure path
> (tree=false) cannot be removed today immediately: PSI is not an
> exact replacement for vmpressure, and switching networking socket-buffer
> back-off to PSI

(Here I understand PSI is a different and differntly scope metric) but
what does it mean when you write that tree=false cannot be removed but
the other patch bails out from vmpressure() (i.e. nothing is updated
anyway)?

Thanks,
Michal

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