Re: [PATCH v3 0/8] mm: speed up ZONE_DEVICE memmap initialization

[Li Zhe]

On Wed, 27 May 2026 13:46:37 -0700, akpm@xxxxxxxxxxxxxxxxxxxx wrote:

> AI review had a number of things to say:
> 	https://sashiko.dev/#/patchset/20260527033636.28231-1-lizhe.67@xxxxxxxxxxxxx

Thanks for the review. All four points are valid.

  1. The head-page template setup should not run page initialization and
     refcount helpers on a stack-resident struct page.
  2. The compound-tail template path has the same issue and should avoid
     running compound-tail/refcount setup on a stack object.
  3. The x86 memcpy_streaming() eligibility check is too permissive, so some
     transfers that cannot stay entirely on the non-temporal path may still
     go through memcpy_flushcache().
  4. memcpy_flushcache_small() should reject unsupported sizes before issuing
     any store, otherwise fallback can observe partial writes.

I have prepared corresponding fixups on top of v3.

Thanks,
Zhe