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mm: pghot: Precision mode for pghot
Default pghot stores hotness in a 1‑byte record per PFN, limiting frequency to 2 bits, time to a 5‑bit bucket, and preventing storage of per‑PFN toptier NID. This restricts time granularity and forces
Default pghot stores hotness in a 1‑byte record per PFN, limiting frequency to 2 bits, time to a 5‑bit bucket, and preventing storage of per‑PFN toptier NID. This restricts time granularity and forces