Re: [PATCH v2 1/2] mm/damon/core: preserve the quota passed to damon_new_scheme()

[sashiko-bot@kernel.org]

> damon_commit_ctx() first commits the running context's parameters to a
> temporary context for validating proposed updates. When
> damon_commit_schemes() creates the temporary schemes, it passes the
> running scheme's quota as the quota parameter of damon_new_scheme().
> 
> damon_new_scheme() calls damos_quota_init() on that quota before copying
> it to the new scheme. This clears the running scheme's effective quota,
> feedback input and charging state. Even an update rejected with -EINVAL
> loses the running quota state.
> 
> For a size quota, this discards the bytes already charged and allows the
> scheme to use a fresh quota before the reset interval has elapsed. For a
> goal-driven quota, the consist tuner loses its accumulated input and
> restarts from its minimum input. A time quota loses its throughput
> estimate and falls back to the initial estimate.
> [ ... ]
> Fixes: 60bd24f272d0 ("mm/damon/sysfs: test commit input against realistic destination")
> Cc: <stable@vger.kernel.org>
> Link: https://lore.kernel.org/r/20260702212143.0CB6D1F00A3D@smtp.kernel.org/ [1]
> Assisted-by: LLM
> Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260924201615.4478-1-kmehltretter@gmail.com?part=1