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 800E4CD3423 for ; Fri, 1 May 2026 18:33:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D1A416B008C; Fri, 1 May 2026 14:33:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id CA47A6B0092; Fri, 1 May 2026 14:33:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B6BC36B0093; Fri, 1 May 2026 14:33:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id A2D206B008C for ; Fri, 1 May 2026 14:33:13 -0400 (EDT) Received: from smtpin03.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 43A501C04DE for ; Fri, 1 May 2026 18:33:13 +0000 (UTC) X-FDA: 84719698266.03.C1C063F Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf10.hostedemail.com (Postfix) with ESMTP id 34A76C000C for ; Fri, 1 May 2026 18:33:10 +0000 (UTC) Authentication-Results: imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=I1hEcnPJ; spf=pass (imf10.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1777660391; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=vTwFcpDT1gw6QapvP0CmlUDyVJSqRgXbW5280v/Zt+M=; b=gO0sOAmom+6sP9uw3osn151BDIrlP0giTIxrFT0ZQ/bM3zc4+rfwbFxsaW5sG/LsNiTNz3 SRWzdG+rnLT4+v27fKSD0hrbF4EWLmA2+g5HuxTxva7fti3q2Bjj4XASxFqSSSuiB+iRL9 QRH/ULX+MVqhfY/VtLfvvW0XwAvHsck= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1777660391; a=rsa-sha256; cv=none; b=Ov+tixsXSFe5dx1hccF/l0LFi2xJlbBM8LQ99keRtkdLOqFYomImBisY6NXwe1StAaOTwo DgePDXVc4d18H7HEIVvCcuhCWHunX18Z1hgQEIw0kpusoPd+3/YiPwcMgwD/SoKDJwYzyw A9yPDif2VZuPC8qLn7fBqhGihIC5AQU= ARC-Authentication-Results: i=1; imf10.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=I1hEcnPJ; spf=pass (imf10.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 1711940645; Fri, 1 May 2026 18:33:10 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EE5BAC2BCB4; Fri, 1 May 2026 18:33:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777660390; bh=3HJJjz0ErBEtCfCaJe+eUDFWBsjaHQV3cSioVL4tTho=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=I1hEcnPJviCPxnVe67YIQsM2XxcSEaOnMoDxNdta/dVw5Isd+xUtwj+JgAX8sddv2 jxHtwC8tqaXbqengfmTHh2FDFyAWkjsLGrjNQ+3/9eLIfKjYERcuth4yzdz5EH5gUd G5AmRNGjNtE7O7Ax7BKcThBmabHD040FFmhz+fS1XvHuYHs4xhz288wFu6CUTBg2Wh 9nEPkVKcJF3Mv3xbTFGC+qSyM/BxyU8KKOsRKYK/DFGz/kD/p9I6mQo9S4o9zUBQHV gnuYQwxq1pTQJpDzBnrZ0UWcHJjFnYWSVej+4coObMtLqk0lpB8EBKRWpqVirgPu6t bI+LBqNmW8Ylw== Message-ID: Date: Fri, 1 May 2026 20:33:04 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] userfaultfd: merge fs/userfaultfd.c into mm/userfaultfd.c To: Mike Rapoport Cc: Andrew Morton , Alexander Viro , Christian Brauner , Jan Kara , Peter Xu , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20260430113512.115938-1-rppt@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 34A76C000C X-Stat-Signature: qe47eo55g6wkad9tix1nuhjirdrt8q3w X-Rspam-User: X-HE-Tag: 1777660390-880828 X-HE-Meta: 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 0elQe/PB HEz0RjY+bUkDkcEWeHhYKDoLi5HTAy/CYYSvLAdHev8x7PYK2nLtw3FJenQhAeby5N3usRFASF7BmttJP0x+XK09evg2NbZKjJGuRSXKbLfF/0le//wGnLiz7JVu/xKT3Pcm/TCXp9d5b4Bf1dHIOzaN/2roSpoIwB5nG9Dl8ck9ejitw1pgpoUMvakflc0fW2xmoHF24ySrpATdxYsBU29HhC1P7X1Wp6zKxejUtzY3oHINIfUicVz3dmn5RNd8ZTCN1 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 4/30/26 16:56, Mike Rapoport wrote: > On Thu, Apr 30, 2026 at 04:23:08PM +0200, David Hildenbrand (Arm) wrote: >> On 4/30/26 13:38, David Hildenbrand (Arm) wrote: >>> >>> Yeah, makes sense to me! >>> >> >> Thinking about this, is it reasonable that the kconfig stuff stays in fs/ ? > > But it's in mm already. $ grep HUGETLB fs/Kconfig config ARCH_SUPPORTS_HUGETLBFS menuconfig HUGETLBFS depends on ARCH_SUPPORTS_HUGETLBFS if HUGETLBFS config HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON depends on HUGETLB_PAGE_OPTIMIZE_VMEMMAP endif # HUGETLBFS config HUGETLB_PAGE def_bool HUGETLBFS config HUGETLB_PAGE_OPTIMIZE_VMEMMAP def_bool HUGETLB_PAGE depends on ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP select SPARSEMEM_VMEMMAP_PREINIT if ARCH_WANT_HUGETLB_VMEMMAP_PREINIT config HUGETLB_PMD_PAGE_TABLE_SHARING def_bool HUGETLB_PAGE -- Cheers, David