Re: [PATCH v8 0/8] mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings

Stanislav Kinsburskii <[email protected]> Fri, 10 Jul 2026 20:22:33 -0700

Newsgroups	org.kernel.vger.linux-hyperv,org.freedesktop.lists.dri-devel,org.freedesktop.lists.nouveau,org.kernel.vger.linux-doc,org.kernel.vger.linux-kernel,org.kernel.vger.linux-kselftest,org.kernel.vger.linux-rdma,org.kvack.linux-mm
Message-ID	<alG2-RSitzPWClAX@skinsburskii>

On Fri, Jul 10, 2026 at 03:11:51PM -0700, Andrew Morton wrote:
> On Fri, 10 Jul 2026 14:26:20 -0700 Stanislav Kinsburskii <[email protected]> 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.  This seems fairly mature and mostly-reviewed so I'll give it a
> spin in mm.git's mm-new branch.
> 
> Unfortunately Sashiko wasn't able to apply this or v7.  I'm not sure
> what base you were using.  Hopefully there's a reason for a v9 so we
> can retry this.
> 

I rebased this series on top of mm-new right before sending it out.
Should I have used a different branch?

Thanks,
Stanislav

> I have a few niggles, nothing major...