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[98.225.44.182]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-38e172b6ce6sm403816a91.1.2026.07.13.13.57.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jul 2026 13:57:58 -0700 (PDT) Date: Mon, 13 Jul 2026 13:57:55 -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> <20260710224950.53bcb43ce7e564f07a1f6a8c@linux-foundation.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20260710224950.53bcb43ce7e564f07a1f6a8c@linux-foundation.org> On Fri, Jul 10, 2026 at 10:49:50PM -0700, Andrew Morton wrote: > 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. > I’d like to send another revision addressing a few comments and also replace the `max/max_t` check with something simpler. Which branch should I base it on so that Sashiko can apply it successfully? Or would it be better to send fixups against `mm-new`? Thanks, Stanislav