From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5F627C5B567 for ; Mon, 10 Aug 2026 18:57:06 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 4BE126B0092; Mon, 10 Aug 2026 14:57:05 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 46F4F6B0093; Mon, 10 Aug 2026 14:57:05 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 35E426B0095; Mon, 10 Aug 2026 14:57:05 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 12E506B0092 for ; Mon, 10 Aug 2026 14:57:05 -0400 (EDT) Received: from smtpin19.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 90811160263 for ; Mon, 10 Aug 2026 18:57:04 +0000 (UTC) X-FDA: 85086267168.19.9558438 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf15.hostedemail.com (Postfix) with ESMTP id E98A8A0017 for ; Mon, 10 Aug 2026 18:57:02 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=dGjCopdH; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf15.hostedemail.com: domain of wei.liu@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=wei.liu@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1786388223; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=DgHH11rbBugxycgVfllDqGnSiJw+pTYpQUpXBdKD4ec=; b=8otGcAwLid7yRFC5XCDUS2ffM5nk/2Sz56mbbQKa8UVZD0O0RevAmIhK5MhLMctpolpIC0 IxGBXRq5IThdTQrVQ1XTofd9dvfE0TEMuplTd7ufL7hk+u3Ve2XZFYa/HLWanmkHVIoDMH zyWQmjFG2QvZtXRdVCIwX5jY6DpsVTc= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=dGjCopdH; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf15.hostedemail.com: domain of wei.liu@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=wei.liu@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1786388223; b=dTRACpNOBqk6wx/8LVG0hvxZdPhyhVWyIQQwfhknJyg7cgeyoKZ2DH/OgYE21oM1PBaKad Vu6DDk1T19sIEt0vhEa/LsjwzlapVSK9hFC5aJaQF0GTD3bamkOcEiRggbPlE1+vhsftgr xE4d6xvUQPBOOqpJnmHzZ8kFXWqr0y4= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 6C2F6600AD; Mon, 10 Aug 2026 18:57:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 937911F000E9; Mon, 10 Aug 2026 18:57:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786388222; bh=DgHH11rbBugxycgVfllDqGnSiJw+pTYpQUpXBdKD4ec=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=dGjCopdH5Dh+u5udlFJdn6uvtThWYmJaM5Eb2jrmqTmlPXe5UlQ0CRphwRoBIJAm6 F0kU/FDdk2naDL4p3srV/lxFnEfrV9izlK0/eVoMoRzHM6zEAlb9GpeWNPiLSHMibY 7/DPwPPVatxqKpZv+TfYsfmRCGlQLyQIHN6gqgSCuosDQKnkX7zFjgBI0zLwi3MUEy whMrR+qxXWlWfsydnEdMuQYTG3VOiaRpdN8MxbYzSZLGHi/ErGFwHRXNVMMZH+h3LY 9bzRCWjMFzLk9BevIJ+7lY7vmKa9eVcOTLJ3LnT1A3hINcRRz11t4KUr+PC1fbqo0Y U7y9rB8HQKU5A== Date: Mon, 10 Aug 2026 11:57:00 -0700 From: Wei Liu To: Andrew Morton Cc: Wei Liu , Stanislav Kinsburskii , Jason Gunthorpe , Leon Romanovsky , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Shuah Khan , Shuah Khan , "K. Y. Srinivasan" , Haiyang Zhang , Dexuan Cui , Long Li , Lyude Paul , Danilo Krummrich , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Min Ma , Lizhi Hou , Oded Gabbay , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-hyperv@vger.kernel.org, dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-rdma@vger.kernel.org Subject: Re: [PATCH v11 0/8] mm/hmm: Add mmap lock-drop support for userfaultfd-backed mappings Message-ID: <20260810185700.GD2496954@liuwe-devbox-debian-v2.local> References: <20260723-hmm-v10-v11-0-c55b003a4b61@gmail.com> <20260723142242.5d3f87208d47819d873ae458@linux-foundation.org> <20260731211728.GA3243658@liuwe-devbox-debian-v2.local> <20260731143733.6f74ec9b9023f898c3c260e1@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260731143733.6f74ec9b9023f898c3c260e1@linux-foundation.org> X-Rspam-User: X-Rspamd-Server: rspam03 X-Stat-Signature: 4rgthgrq5csaqyu7h114nm4cn1ayb5o9 X-Rspamd-Queue-Id: E98A8A0017 X-HE-Tag: 1786388222-721497 X-HE-Meta: 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 tis803J4 YgWaTgRTXctm4SNjk8v9olMoXUnCEPJ8T6cMRfqD43+sbVVSk1JktXRNwGlC/2mDfAWqQ9n1oa3+kh+Unoa/SM2jhk2FpNfdFidWEnxF1FE4X+sRROypzPbhv4L7cTMEV/Qmq9+gdpOpgfQ8tRWQE3aTGxhGqf5PsMukL2jsmGzUaHIXQrfTXkTtSSRqLY2IcXakQb4JS2b8Va3ObcLvWPSkFA+H1vLwphzCPVSRlrPHbCDQFTHS8aIa1Exe/Bsn0Mbvq Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, Jul 31, 2026 at 02:37:33PM -0700, Andrew Morton wrote: > On Fri, 31 Jul 2026 14:17:28 -0700 Wei Liu wrote: > > > On Thu, Jul 23, 2026 at 02:22:42PM -0700, Andrew Morton wrote: > > > On Thu, 23 Jul 2026 10:36:32 -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, I've updated mm.git to this version. > > > > Hi Andrew, > > > > I see this series in linux-next now. > > > > I'm curious to know if these patches are going to make 7.3. > > Probably. The series is incompletely reviewed at this time. Perhaps > you can assist with this? Fair point. I'm not an MM expert but I will try. Wei > > > We have some work that's dependent on this so would like to plan > > accordingly. > > > > Thank you Stanislav for continue pushing this.