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b=kbiBT4UI8EsOzp5Z6jcjE98+zJxsZeeKjK7DQ8Q28feKtSsl5P2ADzs/pTEcqC0/J QY82X8hqbvOUNwXy7z96UyQ9MiH9eTOe4kxzhnxuDvLyE2M7RAXChoKV7pn9eSdotM zjLpw7SDmjk5NIon4EHpDP7oKzGvYv+jnEP2DHoA= Date: Fri, 10 Jul 2026 22:49:50 -0700 From: Andrew Morton To: Stanislav Kinsburskii Cc: airlied@gmail.com, akhilesh@ee.iitb.ac.in, corbet@lwn.net, dakr@kernel.org, david@kernel.org, decui@microsoft.com, haiyangz@microsoft.com, jgg@ziepe.ca, kees@kernel.org, kys@microsoft.com, leon@kernel.org, liam@infradead.org, lizhi.hou@amd.com, ljs@kernel.org, longli@microsoft.com, lyude@redhat.com, maarten.lankhorst@linux.intel.com, mamin506@gmail.com, mhocko@suse.com, mripard@kernel.org, nouveau@lists.freedesktop.org, ogabbay@kernel.org, oleg@redhat.com, rppt@kernel.org, shuah@kernel.org, simona@ffwll.ch, skhan@linuxfoundation.org, surenb@google.com, tzimmermann@suse.de, vbabka@kernel.org, wei.liu@kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-rdma@vger.kernel.org Subject: Re: [PATCH v8 0/8] mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings Message-Id: <20260710224950.53bcb43ce7e564f07a1f6a8c@linux-foundation.org> In-Reply-To: References: <178371866223.900500.12312667138651735591.stgit@skinsburskii> <20260710151151.1e193eedd0cf2591ae392f76@linux-foundation.org> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: ikgkit34mffk8eaepgaowskci1q69g6w X-Rspamd-Queue-Id: A2E0940007 X-Rspamd-Server: rspam01 X-Rspam-User: X-HE-Tag: 1783748992-495490 X-HE-Meta: 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 dA9tpy3C iQFCBSCT45I2f2R2IiSBXfnwSN46NhK0vVYU2o2VdF8V0sTuHFSQIbOAVb7ir3mjKUXkxjOzMeBgX9j8IJzbjYyVNyyWVLROjFqU8KfvIDESraCS76B77wjKQUhwZOeUqwYksg0/t1lOORX3S+aC9f6jDIqjvzVwNEv7YY0FhYUTtU3kcq37PZoWnZXhr0hCiSor7guntSXAiXOol6c06J7n4IoOSwbInwDFPdwYiRZzgmXBZGgE9+lkSeRXTh1+PaSMAlKt2aEva/Bk7tD5wOlayrQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 10 Jul 2026 20:22:33 -0700 Stanislav Kinsburskii wrote: > On Fri, Jul 10, 2026 at 03:11:51PM -0700, Andrew Morton wrote: > > On Fri, 10 Jul 2026 14:26:20 -0700 Stanislav Kinsburskii 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? mm-new is good - Sashiko attempts that. But it's changing rapidly at this point in the development cycle.