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 C2EEBC53219 for ; Wed, 29 Jul 2026 15:50:05 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id A25E46B00B8; Wed, 29 Jul 2026 11:50:04 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9CE706B012E; Wed, 29 Jul 2026 11:50:04 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 8966C6B0139; Wed, 29 Jul 2026 11:50:04 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 579D76B00B8 for ; Wed, 29 Jul 2026 11:50:04 -0400 (EDT) Received: from smtpin18.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay09.hostedemail.com (Postfix) with ESMTP id DC6C9806F5 for ; Wed, 29 Jul 2026 15:50:03 +0000 (UTC) X-FDA: 85042250286.18.89C235F Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf05.hostedemail.com (Postfix) with ESMTP id 1B072100007 for ; Wed, 29 Jul 2026 15:50:01 +0000 (UTC) Authentication-Results: imf05.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=jvXgUWyC; spf=pass (imf05.hostedemail.com: domain of vbabka@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=vbabka@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=1785340202; 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=uqKH4VCTe9vViQKnNAGVZMzkIEeNzEW45NjzvfGwTZs=; b=C52zZc71e7RZDxZjigHEw2p8CJoEUREF5pF8wb2YHe79YA9WP1ixJm9QacKdPkiI5JtZqC /I1MPS4KYcQm9c7y3mIBcY0g29+O3C2TR9Z5pi0WEHUKcxOUY8+l7WgEFYC0aVa5F95eVr jco9SvHowhf+AJ6f1QUmb5mqOi+74yE= ARC-Authentication-Results: i=1; imf05.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=jvXgUWyC; spf=pass (imf05.hostedemail.com: domain of vbabka@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=vbabka@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1785340202; b=LpxaqUBrVmZgtb7pxH015wJPRG8MFaEY8LMnni5VvbPOfld0BIAPlJUdiFtxW7yQdlvAVY kXZmiICwh8FUQCqx+M4IkibLFWWfAdYhqInv2+Wkq9HXHYSx8hbqUNWvKSm+pXzflNh/yz T4HPU4Kc6ggXaM1/GJJrqcIBiT7BU/s= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 8A1A2600AB; Wed, 29 Jul 2026 15:50:01 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 543911F00A3E; Wed, 29 Jul 2026 15:49:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1785340201; bh=uqKH4VCTe9vViQKnNAGVZMzkIEeNzEW45NjzvfGwTZs=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=jvXgUWyCn8XO+hR+RwLHFAVOIo01qZlqspdWH/BNHlSiFPe7kSMNF/A1WYJmGNB3L RQLKNV8Qo8/JmQRx30K3TLy2qPL5PbMKemIEIGYGMqw/qKZ63svwxGqC3mbCW5jeEM rSv7seblRC66ZHEnDAPVVIRhwDwOSEcNisu8/pl9BJIYLi2UVJWoU2lRlHFlOi62G0 JkCdUm/Q8pfT/XDZtkpyqJY2U2AtCU55GtuepP4B6IKruYGPSyDitFBOSABshdKbD4 2x4RqDWO9ezy8shRf2nFROlynmUDeY9yZtbbcBhIf8A+tRCymg06vD7S7oHKjtZbj3 we2dKTxCl8PQA== Message-ID: <63960288-5240-4b94-b22d-f389911366c8@kernel.org> Date: Wed, 29 Jul 2026 17:49:49 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/3] mm: move internal mempolicy APIs to new internal header Content-Language: en-US To: Brendan Jackman , Matthew Wilcox Cc: Brendan Jackman , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Johannes Weiner , Zi Yan , Jan Kara , Joshua Hahn , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Hugh Dickins , Baolin Wang , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Barry Song , Youngjun Park , "Joerg Roedel (AMD)" , Will Deacon , Robin Murphy , Huacai Chen , WANG Xuerui , Thomas Gleixner , Chuck Lever , Jeff Layton , NeilBrown , Olga Kornievskaia , Dai Ngo , Tom Talpey , Trond Myklebust , Anna Schumaker , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, iommu@lists.linux.dev, loongarch@lists.linux.dev, linux-nfs@vger.kernel.org, netdev@vger.kernel.org References: <20260716-folio-alloc-cleanups-v1-0-5363b8e92d33@google.com> <20260716-folio-alloc-cleanups-v1-1-5363b8e92d33@google.com> <51810eba-2a60-49f9-b879-7f806546e600@kernel.org> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 1B072100007 X-Rspam-User: X-Stat-Signature: un8miifur8b63g8cwykgs5f7neg5mxap X-Rspamd-Server: rspam04 X-HE-Tag: 1785340201-859992 X-HE-Meta: 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 pQqxzb7d DNk/XSzI+plOuU01GfJe/JPlYg2597DbL/sKX5r0pE7Cq0+DXa+1elM8YD4lTAgeEeKCYthi0aI60NXOPoZ6lYo30Li/HfOqum351CMtH/Tw4mSdQ8pLhGUeW50Y+ziGYcpn55QOFuAxfcea0OAPJ5iqUCRCojOQs7mwEFkclN3uhjaumJorgMauA4mEzUIEYgZn3MChfxlFmVQmaafSPn8E2HFm1eemjJ16WVx6L9ynmHHBVFfPfCJk6C5f8/ekFOkIQmQWqiLC79XI2PTGfAFQ6G9jMg3bm+ouXLK4kDsp0Z5nQb38wE/+SHRdGji616rUA1VUsF57t9zaJHj+RKVnDviKwIoVuS95AqJsH6OiEGulYddQpKfOFXACnPXFfvy0c Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/29/26 13:50, Brendan Jackman wrote: > On Wed Jul 22, 2026 at 3:15 PM UTC, Brendan Jackman wrote: > ... >>>> We have a long history of people just moving stuff around in patches >>>> without knowing what the intent was if it should be moved. >>> >>> I guess this patch is not critical to the rest, if that's an issue. >> >> Well, for ALLOC_UNMAPPED we really do need an alloc_flags arg for this >> function, but we can always just go straight to what I described above. >> I.e. I can create the __ variant + wrapper from the start. It's just a >> question of whether we prefer: >> >> - "Yuck, there's a public wrapper here that we don't actually need", or >> >> - "We hid this mempolicy API and people might think we'd NACK a patch to >> un-hide it".0 >> >> https://lore.kernel.org/all/20260703-alloc-trylock-v5-2-c87b714e19d3@google.com/ > > Uh yeah so in v3 I did not depend on this patch, I just went straight to > creating __folio_alloc_mpol_noprof() here: > > https://lore.kernel.org/all/20260726-page_alloc-unmapped-v3-25-6f5729aa9832@google.com/ > > So yeah I'd say we can just drop this controversial patch and move > forwards with the other two? Ack.