Re: [PATCH v9 0/8] mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings

[Andrew Morton]

On Wed, 15 Jul 2026 11:15:50 -0700 Stanislav Kinsburskii <skinsburskii@xxxxxxxxx> wrote:

> This series extends the HMM framework to support userfaultfd-backed memory
> by allowing the mmap read lock to be dropped during hmm_range_fault().

Thanks, updated.

> Changes in v9:
> 
>   - Folded the fixups into the full 8-patch series instead of sending a
>     separate fixup series.
>   - Clarified that the HMM timeout bounds repeated HMM/mmu-notifier retry
>     attempts, with the helper refreshing range->notifier_seq internally.
>   - Kept nouveau’s explicit outer deadline because its retry loop runs in a GPU
>     fault worker and cannot rely on fatal signals from the faulting process.
>   - Converted amdxdna, and GPU SVM callers to pass the shole timeout budget to
>     hmm_range_fault_unlocked_timeout().

These are all in your fixups for v8, so the v9 series made no
alteration to mm.git.