Among the memory management feature highlights for Linux 6.17 include:
- DAMON_STAT is merged as a new DAMON offering for simple and practical access monitoring designed for simpler setup and use within production environments.
- Optimizing mremap() for large folios yielded a 37% reduction in execution time for a memset+mremap+munmap benchmark.
- A new standalone notifier for NUMA node memory state changes.
- Introducing the ability to provide per-node proactive memory reclaim as an alternative to the memcg-based reclaim.
- Per-VMA locks for /proc/pid/maps reads to address large contention issues while in some instances reducing latency by more than half.
- Optimizing mprotect() for large folios can provide greater than 3x speed-ups to mprotect() when using large folios.
More details on the MM changes for Linux 6.17 via Andrew Morton's pull request .