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]) by smtp.lore.kernel.org (Postfix) with ESMTP id A8216C021A0 for ; Mon, 17 Feb 2025 09:34:04 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 3F1EA280042; Mon, 17 Feb 2025 04:34:04 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 3A0F1280040; Mon, 17 Feb 2025 04:34:04 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 21A5C280042; Mon, 17 Feb 2025 04:34:04 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id 053E4280040 for ; Mon, 17 Feb 2025 04:34:03 -0500 (EST) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 7E74CB4832 for ; Mon, 17 Feb 2025 09:34:03 +0000 (UTC) X-FDA: 83128925166.05.1E1F3DB Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) by imf23.hostedemail.com (Postfix) with ESMTP id 2309F140002 for ; Mon, 17 Feb 2025 09:34:00 +0000 (UTC) Authentication-Results: imf23.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=Ue+xc2EG; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=Djo+uGfA; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=Ue+xc2EG; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=Djo+uGfA; spf=pass (imf23.hostedemail.com: domain of vbabka@suse.cz designates 195.135.223.130 as permitted sender) smtp.mailfrom=vbabka@suse.cz; dmarc=none ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1739784841; 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=bve/fdz3O3XRa9+QX9XWZ84C/aVBGPJZUCZOGTW1EKw=; b=6DC2mSHmObI5Sz2bIm5HHD29ptQi3L2yqbluRsDXM6Yc6gmAeAAYiQpfUZB8RpLhUfoo/G 015hAm1RbFVA7uH2+2voK5acfQbRoGs3Kz9NNMFAa1sy8J5cn6jomvBXjwuJwXDuq408Cq I3xXvauCR1FzB++FYK/I5ec3TN322pU= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=Ue+xc2EG; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=Djo+uGfA; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=Ue+xc2EG; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=Djo+uGfA; spf=pass (imf23.hostedemail.com: domain of vbabka@suse.cz designates 195.135.223.130 as permitted sender) smtp.mailfrom=vbabka@suse.cz; dmarc=none ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1739784841; a=rsa-sha256; cv=none; b=VxWmo9hZXKGTAffzJr7kQ7Vragg0sfxLAVgTBAM2lvqxM8Fkn3a61509sWXT8Hk0RGPHAG LThQkwVvDC9t4gbmdWi76j0CsbUehK7Iepu+EPJcGYu2IHQPfpW2LgqnbPm4l9TuSdb7Tp bMi+HwJs4iHdtM0S+frap3ct65MCtFY= Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 3FABE2118C; Mon, 17 Feb 2025 09:33:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1739784839; h=from:from:reply-to: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:autocrypt:autocrypt; bh=bve/fdz3O3XRa9+QX9XWZ84C/aVBGPJZUCZOGTW1EKw=; b=Ue+xc2EGNRHca/KvyrY0e/ZdSzCQPhHwy/bO/bUKEMAEE0kVnErO5ZsvFt6DopTNyXYjUJ Eg+Z8Pz5I/nhgl2Mw7P6Pex4eKuRajiCYZXo9TGz0DGP2G5ZFNALTJ1kTAP90+M4CblUkY Oz5K1dpFL0PAtKuwAfeX8mW4u4wjGFw= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1739784839; h=from:from:reply-to: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:autocrypt:autocrypt; bh=bve/fdz3O3XRa9+QX9XWZ84C/aVBGPJZUCZOGTW1EKw=; b=Djo+uGfAxmfWFdeJYqIorfnOjjDn1wUSsjXLGoofVeouPqXVvh3GIMtmH+vMnDi62IU8av AJWROrTUZk1QFdAA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1739784839; h=from:from:reply-to: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:autocrypt:autocrypt; bh=bve/fdz3O3XRa9+QX9XWZ84C/aVBGPJZUCZOGTW1EKw=; b=Ue+xc2EGNRHca/KvyrY0e/ZdSzCQPhHwy/bO/bUKEMAEE0kVnErO5ZsvFt6DopTNyXYjUJ Eg+Z8Pz5I/nhgl2Mw7P6Pex4eKuRajiCYZXo9TGz0DGP2G5ZFNALTJ1kTAP90+M4CblUkY Oz5K1dpFL0PAtKuwAfeX8mW4u4wjGFw= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1739784839; h=from:from:reply-to: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:autocrypt:autocrypt; bh=bve/fdz3O3XRa9+QX9XWZ84C/aVBGPJZUCZOGTW1EKw=; b=Djo+uGfAxmfWFdeJYqIorfnOjjDn1wUSsjXLGoofVeouPqXVvh3GIMtmH+vMnDi62IU8av AJWROrTUZk1QFdAA== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id C48A6133F9; Mon, 17 Feb 2025 09:33:58 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id i7A5LoYCs2cwPwAAD6G6ig (envelope-from ); Mon, 17 Feb 2025 09:33:58 +0000 Message-ID: Date: Mon, 17 Feb 2025 10:33:58 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 01/11] mm: Consolidate freeing of typed folios on final folio_put() To: Fuad Tabba , kvm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-mm@kvack.org Cc: pbonzini@redhat.com, chenhuacai@kernel.org, mpe@ellerman.id.au, anup@brainfault.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, seanjc@google.com, viro@zeniv.linux.org.uk, brauner@kernel.org, willy@infradead.org, akpm@linux-foundation.org, xiaoyao.li@intel.com, yilun.xu@intel.com, chao.p.peng@linux.intel.com, jarkko@kernel.org, amoorthy@google.com, dmatlack@google.com, yu.c.zhang@linux.intel.com, isaku.yamahata@intel.com, mic@digikod.net, vannapurve@google.com, ackerleytng@google.com, mail@maciej.szmigiero.name, david@redhat.com, michael.roth@amd.com, wei.w.wang@intel.com, liam.merwick@oracle.com, isaku.yamahata@gmail.com, kirill.shutemov@linux.intel.com, suzuki.poulose@arm.com, steven.price@arm.com, quic_eberman@quicinc.com, quic_mnalajal@quicinc.com, quic_tsoni@quicinc.com, quic_svaddagi@quicinc.com, quic_cvanscha@quicinc.com, quic_pderrin@quicinc.com, quic_pheragu@quicinc.com, catalin.marinas@arm.com, james.morse@arm.com, yuzenghui@huawei.com, oliver.upton@linux.dev, maz@kernel.org, will@kernel.org, qperret@google.com, keirf@google.com, roypat@amazon.co.uk, shuah@kernel.org, hch@infradead.org, jgg@nvidia.com, rientjes@google.com, jhubbard@nvidia.com, fvdl@google.com, hughd@google.com, jthoughton@google.com References: <20250211121128.703390-1-tabba@google.com> <20250211121128.703390-2-tabba@google.com> Content-Language: en-US From: Vlastimil Babka Autocrypt: addr=vbabka@suse.cz; 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 BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSBWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBzdXNlLmN6PsLBlAQTAQoAPgIbAwULCQgHAwUVCgkICwUWAgMBAAIe AQIXgBYhBKlA1DSZLC6OmRA9UCJPp+fMgqZkBQJkBREIBQkRadznAAoJECJPp+fMgqZkNxIQ ALZRqwdUGzqL2aeSavbum/VF/+td+nZfuH0xeWiO2w8mG0+nPd5j9ujYeHcUP1edE7uQrjOC Gs9sm8+W1xYnbClMJTsXiAV88D2btFUdU1mCXURAL9wWZ8Jsmz5ZH2V6AUszvNezsS/VIT87 AmTtj31TLDGwdxaZTSYLwAOOOtyqafOEq+gJB30RxTRE3h3G1zpO7OM9K6ysLdAlwAGYWgJJ V4JqGsQ/lyEtxxFpUCjb5Pztp7cQxhlkil0oBYHkudiG8j1U3DG8iC6rnB4yJaLphKx57NuQ PIY0Bccg+r9gIQ4XeSK2PQhdXdy3UWBr913ZQ9AI2usid3s5vabo4iBvpJNFLgUmxFnr73SJ KsRh/2OBsg1XXF/wRQGBO9vRuJUAbnaIVcmGOUogdBVS9Sun/Sy4GNA++KtFZK95U7J417/J Hub2xV6Ehc7UGW6fIvIQmzJ3zaTEfuriU1P8ayfddrAgZb25JnOW7L1zdYL8rXiezOyYZ8Fm ZyXjzWdO0RpxcUEp6GsJr11Bc4F3aae9OZtwtLL/jxc7y6pUugB00PodgnQ6CMcfR/HjXlae h2VS3zl9+tQWHu6s1R58t5BuMS2FNA58wU/IazImc/ZQA+slDBfhRDGYlExjg19UXWe/gMcl De3P1kxYPgZdGE2eZpRLIbt+rYnqQKy8UxlszsBNBFsZNTUBCACfQfpSsWJZyi+SHoRdVyX5 J6rI7okc4+b571a7RXD5UhS9dlVRVVAtrU9ANSLqPTQKGVxHrqD39XSw8hxK61pw8p90pg4G /N3iuWEvyt+t0SxDDkClnGsDyRhlUyEWYFEoBrrCizbmahOUwqkJbNMfzj5Y7n7OIJOxNRkB IBOjPdF26dMP69BwePQao1M8Acrrex9sAHYjQGyVmReRjVEtv9iG4DoTsnIR3amKVk6si4Ea X/mrapJqSCcBUVYUFH8M7bsm4CSxier5ofy8jTEa/CfvkqpKThTMCQPNZKY7hke5qEq1CBk2 wxhX48ZrJEFf1v3NuV3OimgsF2odzieNABEBAAHCwXwEGAEKACYCGwwWIQSpQNQ0mSwujpkQ PVAiT6fnzIKmZAUCZAUSmwUJDK5EZgAKCRAiT6fnzIKmZOJGEACOKABgo9wJXsbWhGWYO7mD 8R8mUyJHqbvaz+yTLnvRwfe/VwafFfDMx5GYVYzMY9TWpA8psFTKTUIIQmx2scYsRBUwm5VI EurRWKqENcDRjyo+ol59j0FViYysjQQeobXBDDE31t5SBg++veI6tXfpco/UiKEsDswL1WAr tEAZaruo7254TyH+gydURl2wJuzo/aZ7Y7PpqaODbYv727Dvm5eX64HCyyAH0s6sOCyGF5/p eIhrOn24oBf67KtdAN3H9JoFNUVTYJc1VJU3R1JtVdgwEdr+NEciEfYl0O19VpLE/PZxP4wX PWnhf5WjdoNI1Xec+RcJ5p/pSel0jnvBX8L2cmniYnmI883NhtGZsEWj++wyKiS4NranDFlA HdDM3b4lUth1pTtABKQ1YuTvehj7EfoWD3bv9kuGZGPrAeFNiHPdOT7DaXKeHpW9homgtBxj 8aX/UkSvEGJKUEbFL9cVa5tzyialGkSiZJNkWgeHe+jEcfRT6pJZOJidSCdzvJpbdJmm+eED w9XOLH1IIWh7RURU7G1iOfEfmImFeC3cbbS73LQEFGe1urxvIH5K/7vX+FkNcr9ujwWuPE9b 1C2o4i/yZPLXIVy387EjA6GZMqvQUFuSTs/GeBcv0NjIQi8867H3uLjz+mQy63fAitsDwLmR EP+ylKVEKb0Q2A== In-Reply-To: <20250211121128.703390-2-tabba@google.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Action: no action X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 2309F140002 X-Stat-Signature: zboh9abppun13nma1ua5t3isyz3jeuyx X-HE-Tag: 1739784840-761355 X-HE-Meta: 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 fkVM4Odt 0HpB9WB30YeBRoq9uOsra20baJocflO1yJBU5Npi3tWuXiMSWiWrlhtHuCWZQrfk3bSiElraEVBxuaJIF0QlDXRSp/dgGQKymUouWK/oLqlaUoF4+mejum+WRwp4q1HJTp2aLPVZWnR3XPWqUfnQxiKgxpK6rMyt+CKVgxZs5lWVz2i+kPHhgOTXGuFlH+ghMbdhOPIQ0DLQgyHvUoxg/cIcfrTXpTzP8GfGg+wbromjSUhl0hdo6T4uDSETkQGqYxsakCOdJP+iBkKfXFwFLFcfV4NcfjOLcA3K0q5NQuMI+ECECB88uuOHVhbhVyYXJjgWCCd5lfoDoxgohLk9PPCe5KAspcpN2gX91OoO6lSJa63v7zMy8m2PO7rveBvTekojUJ0jYq0o2JRizl15xY+fwWwXgLPnWHEUZXRagcEzFsxiciVWKeOsw3zCfzPBStIGrcnoN1eY/dP4= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000424, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2/11/25 13:11, Fuad Tabba wrote: > Some folio types, such as hugetlb, handle freeing their own > folios. Moreover, guest_memfd will require being notified once a > folio's reference count reaches 0 to facilitate shared to private > folio conversion, without the folio actually being freed at that > point. > > As a first step towards that, this patch consolidates freeing > folios that have a type. The first user is hugetlb folios. Later > in this patch series, guest_memfd will become the second user of > this. > > Suggested-by: David Hildenbrand > Signed-off-by: Fuad Tabba Acked-by: Vlastimil Babka