From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qv1-f46.google.com (mail-qv1-f46.google.com [209.85.219.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A3B4F3C2B8D for ; Fri, 10 Jul 2026 21:39:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.219.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783719570; cv=none; b=P+QdJ5KTXKH00PdgkS9rR+r1pDyXLLrBeymk/GtzvSzK6pPaci5WuqTDP/PN+wQNY8gi1n6hP2nKCcZ71RPUkTZO72sxbVbwCu4nbJF8K01hLADx1iUUfzxKxigH7n3r/gWwMz6VOWoF02MSCMqQTw6aUkcxIRad+diFNd8ULdA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783719570; c=relaxed/simple; bh=8IQ5CYx7b5nVnRm8wkAHsld3shhNHab0xIV3bA9f26A=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=iDvtBUHYH4YKpnC6NBOBk1CIFmswxawzpAYPECxbZRIWgTEfOy+e2hGB0cK7QXNllXlf3vuXB9+S09KR298ruViIUBcY39qGLWo0v8N8DD66qYQFS1rXYsQU8VbD0a97I2thd1q7IbDcmeyv4jw5A2IZYRdGM1HpGDO3WezvC9k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net; spf=pass smtp.mailfrom=gourry.net; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b=KcM3Wylc; arc=none smtp.client-ip=209.85.219.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gourry.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gourry.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gourry.net header.i=@gourry.net header.b="KcM3Wylc" Received: by mail-qv1-f46.google.com with SMTP id 6a1803df08f44-8ff20870ac7so10344216d6.1 for ; Fri, 10 Jul 2026 14:39:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gourry.net; s=google; t=1783719568; x=1784324368; darn=vger.kernel.org; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:from:to:cc:subject :date:message-id:reply-to:content-type; bh=Wb1LcvJKID9cCXN+ue8juptbLrwaSleub1+yDxtfpnU=; b=KcM3WylcLQKgQyXi9yGb6DVP2xBKT/WbjS7kPU2VDU7XkEH4msaT6vN2PsX/38yBZz 8DXrNaOJya8FB8lundHEne4O353YE2hDIALM9o/2VBTcWWbIZXjoSBld1dOop2vOMmbl GEaav3WGOuAd2joAlZRxieqZmCAlx13NmAF+RsQB7bqQCVVuuJoLKuPXDyfv9EbDog7+ 0APUZO2+koKajYBqWUXhYmRb8Mut7lET+V6pvLRRbwbSLd1Fx+tBt1OR8kCkbkOVm8rj YLaiVQtEgIVqoEXPWjQhT1+7yX1R5ZUSI9TK6UaCYaaaQmY8ZPknfw0RBIeoO11F9jrN GWUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783719568; x=1784324368; h=in-reply-to:content-disposition:content-type:mime-version :references:message-id:subject:cc:to:from:date:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=Wb1LcvJKID9cCXN+ue8juptbLrwaSleub1+yDxtfpnU=; b=B0vWXdzAUTvi7vnr11e/zzObJ5UX4nBS6TNMsd/mlbBmRuecxV8JWXF07whPm5nN6/ n9sWKV81dyBh6jtiqdx/6Na7nooOXRjrqi231zcpYpnkV80bWEkYhsAgWQraOUVK2n2p oDaCGLBfk8TskIQMxHUEIUFofyDzORclDDVaBTLpHi59pAp8AZAPHiH2z7wlcvvNpEVh 3dcydybhpgJ5Yzkh6sTi341Hpewe8QAkQMaDLojLnx+X4LjiWD33vSSnJZ7tIy5P8V92 r5ObgZwRGi6nlKrfCaKXr0iToXF9u4AwCz9csKmjPqByhJ/GRiuz0TjYGBCgt/xzswi3 1Gog== X-Forwarded-Encrypted: i=1; AHgh+RorIlcBdB7mWygzHteZvRyThFMYjFm67/H45zQo/vUJyOGqYQM+K0R04j4qoOBM1S2QQfo=@vger.kernel.org X-Gm-Message-State: AOJu0YxaL7f7Er2LJuv0aPtCxNFKDF9rlVutPYucXg8oYppMuxmm784P CY0FpiKB13fyVJKOjD+s8+bZlvfpG9M6cdHhHoRD9IR/q0TWRGBhug8hVmedGisiKS8= X-Gm-Gg: AfdE7clG5z1yzJ4vFaqIxoqZ0R7fsFUkuhGNsplnmpBM6mr6GKwhQgsC+YdDd8p3MBb NzR8d4Rkhg6MmQ2vLMzXpnT7WdxMjOCyAYD8kPlc20ZswXOWw9kfHp4FMqfM2eyZuNhD9TUY2/h 4h7RxxPjJi+Bh/LzfRfS9ykx81Ihgoe+grkG921emU6qZvWPpaff7jDW7+/Wlgz1ULKuMVsM2TY tzUr4S8qAE4Ij7ut+7hoGU2u8CCXEMdKKVZ1Zw/L//4xCyS6MrI7NqEdch3cpIZ9mviYdlGPJ0G vYAmVi4KL2EMSngDB6UZe6OZPc6kEjjZBUyiCGjIJJZEUO3/gyIb4uMrS7KGLPsP0jPwnEqoyR1 7z0rytZKGp7fKeiedalhCzntEbAwP7dBoQYzYpThPj4+g3VKLWhtCmbrfpUiBwSdTezoRAQSNdD Pv5zuovCLX9nKqp0hEnLD8rnXqcEZtDrmSdY9sfX5BhV5JWqAxrkQe/S+BUwg+sgx0qrcG X-Received: by 2002:a05:6214:5904:b0:8ce:9cbd:b0ce with SMTP id 6a1803df08f44-90400c8fae9mr11445886d6.34.1783719567574; Fri, 10 Jul 2026 14:39:27 -0700 (PDT) Received: from gourry-fedora-PF4VCD3F (pool-173-79-60-52.washdc.fios.verizon.net. [173.79.60.52]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8ffd50e081dsm50984276d6.9.2026.07.10.14.39.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2026 14:39:25 -0700 (PDT) Date: Fri, 10 Jul 2026 17:39:19 -0400 From: Gregory Price To: Lorenzo Stoakes Cc: Andrew Morton , David Hildenbrand , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Rik van Riel , Harry Yoo , Jann Horn , Lance Yang , Pedro Falcato , Russell King , Dinh Nguyen , Simon Schuster , "James E.J. Bottomley" , Helge Deller , Alexander Viro , Christian Brauner , Jan Kara , Dan Williams , Matthew Wilcox , Muchun Song , Oscar Salvador , Masami Hiramatsu , Oleg Nesterov , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Miaohe Lin , Naoya Horiguchi , Xu Xin , Chengming Zhou , SJ Park , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Ying Huang , Alistair Popple , Hugh Dickins , Peter Xu , Kees Cook , Marek Szyprowski , Robin Murphy , Andrey Konovalov , Alexander Potapenko , Dmitry Vyukov , Steven Rostedt , Mathieu Desnoyers , Jarkko Sakkinen , Dave Hansen , Thomas Gleixner , Borislav Petkov , x86@kernel.org, "H. Peter Anvin" , Ian Abbott , Paolo Bonzini , Shakeel Butt , Usama Arif , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-parisc@vger.kernel.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org, damon@lists.linux.dev, iommu@lists.linux.dev, kasan-dev@googlegroups.com, linux-sgx@vger.kernel.org, etnaviv@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, linux-tegra@vger.kernel.org, kvm@vger.kernel.org, Russell King Subject: Re: [PATCH v2 28/33] mm/vma: slightly rework the anonymous check in __mmap_new_vma() Message-ID: References: <20260710-b4-pre-scalable-cow-v2-0-2a5aa403d977@kernel.org> <20260710-b4-pre-scalable-cow-v2-28-2a5aa403d977@kernel.org> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260710-b4-pre-scalable-cow-v2-28-2a5aa403d977@kernel.org> On Fri, Jul 10, 2026 at 09:17:09PM +0100, Lorenzo Stoakes wrote: > Determine if the VMA is anonymous early on, so we separate the logic which > invokes callbacks from the rest of the logic. > > This is in order that a subsequent commit which asserts correct virtual > page offset for anonymous mappings correctly asserts this for new anonymous > mappings. > > No functional change intended. > > Signed-off-by: Lorenzo Stoakes Reviewed-by: Gregory Price