Re: [PATCH] net/sched: cake: clamp active flow deficit on rate changes

[Eric Dumazet]

On Mon, Jun 8, 2026 at 5:08 PM Samuel Moelius
<sam.moelius@xxxxxxxxxxxxxxx> wrote:
>
> Changing CAKE rate parameters updates the quantum used for future
> scheduling, but active flows can retain deficit computed under the old
> rate.
>
> That stale deficit lets an already active flow receive service based on
> the previous configuration after userspace changes the shaper rate.
>
> After recomputing rate-derived scheduling parameters, clamp positive
> active-flow deficits to the quantum that applies under the new
> configuration.
>
> Assisted-by: Codex:gpt-5.5-cyber-preview
> Signed-off-by: Samuel Moelius <sam.moelius@xxxxxxxxxxxxxxx>
> ---

This is bloat for a not existent issue.

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