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[98.225.44.182]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84856e7c8edsm3652647b3a.36.2026.07.10.20.22.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2026 20:22:37 -0700 (PDT) Date: Fri, 10 Jul 2026 20:22:33 -0700 From: Stanislav Kinsburskii To: Andrew Morton 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: References: <178371866223.900500.12312667138651735591.stgit@skinsburskii> <20260710151151.1e193eedd0cf2591ae392f76@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260710151151.1e193eedd0cf2591ae392f76@linux-foundation.org> X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: CB8E0140008 X-Stat-Signature: hn45a8wrrieegqs6ioz6eq5hb9bz6stc X-HE-Tag: 1783740158-31150 X-HE-Meta: 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 ZuHjw/hf 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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? Thanks, Stanislav > I have a few niggles, nothing major...