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b=isSd+YdIk2oKRkj18Y+rPxVD68aDvGRkC3Gfz17Do9Znb6noKkhNVD6qZ2vomkJnV Vz3mMRKNl/P1Rv/PJH445qJc6+MsAE7TmU46muPg/2k1wbFohRwIe8WbSdXx1BmEdU TG5W4PVDlLUdPHejARtAkCr9JonW/gFOE5KBW7kI= Date: Fri, 10 Jul 2026 15:11:51 -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: <20260710151151.1e193eedd0cf2591ae392f76@linux-foundation.org> In-Reply-To: <178371866223.900500.12312667138651735591.stgit@skinsburskii> References: <178371866223.900500.12312667138651735591.stgit@skinsburskii> 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-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: F133A140005 X-Stat-Signature: acp7awf8gx6o9u13338caykzi1wwiuaf X-HE-Tag: 1783721513-828155 X-HE-Meta: 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 M+/mjt1M omnKnhqG/cqDC6C2De1szIuZ2BbL1AGhZEUM7TLQ0l7QDrK2dBneHVUboyOWAbA2DWCP8GhirVNrOZUlp4bv8bnhrOHTenOBv/m/r0ddmiUNRiXlsd1voH38oSY/J+Sl+OB3Re91sV92CoM57rn2PjilrCVWoW5EKI79uPrbaNrGQRYxem3ru8vZHOdA2NF4Fp8DqX/QrOAgumtt4bqbyMknTEY6mt7+b43FbOV49tEQ3n5Nx9ei8Zl+9Ef/uTOA7yU3QCS/9Xs5pjp8HHddW9rRXgQ== 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 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 have a few niggles, nothing major...