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 24549C5620A for ; Thu, 6 Aug 2026 09:49:03 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 0AE696B00A1; Thu, 6 Aug 2026 05:49:02 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 05F616B00A2; Thu, 6 Aug 2026 05:49:02 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id EB8406B00A3; Thu, 6 Aug 2026 05:49:01 -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 C3FF86B00A1 for ; Thu, 6 Aug 2026 05:49:01 -0400 (EDT) Received: from smtpin13.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay05.hostedemail.com (Postfix) with ESMTP id 4DD4B406CD for ; Thu, 6 Aug 2026 09:49:01 +0000 (UTC) X-FDA: 85070370882.13.71EB9AF Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf02.hostedemail.com (Postfix) with ESMTP id ADF5C8000D for ; Thu, 6 Aug 2026 09:48:59 +0000 (UTC) Authentication-Results: imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=H1M6zHDY; spf=pass (imf02.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@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=1786009739; 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=zaAAeEbwqzKwToy90LuzRfiT0XS68eqv5FapbEIYz4E=; b=n0aVpI5a1OWeeWX58ophwXkCXPQRb63tREBCsdcUcEDm7oD2tRjxxVmpt8rlbU5guVyfgx NTxmxosY1LskHl8kzwpMyeQImEUhBapfIMj18Zfl3PC6gXDELi/p4jT2F2OPmJ58BgmMfF 5LEYPrJ4mRk20qG0YZq0Yk9+mS0ICRc= ARC-Authentication-Results: i=1; imf02.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=H1M6zHDY; spf=pass (imf02.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@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=1786009739; b=gWZiXy51tRsmJ7+Svulkr/9K8HZ4zs2EwzO8ca68JaerHnyzDKGur3zNH4vbUXO0r4TFWE 3wp5GgssE6yvaYqhxGyHxZjTpUihDCQwjYwIEl+TRlD61k/hD5HcDUVpXe7PtnwK0adywa +Q9AYnTwcQBZtxEKf16bF3xYSNtqISc= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 1C0F0418C2; Thu, 6 Aug 2026 09:48:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3E4C31F000E9; Thu, 6 Aug 2026 09:48:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786009738; bh=zaAAeEbwqzKwToy90LuzRfiT0XS68eqv5FapbEIYz4E=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=H1M6zHDY7xKJ6TiAV/oLvwqhETK5AzX+0vWa8UnUQuFRXz4mXn98+RMq/TtJCCffJ p/baFnXOL+1ZdBET2YZ53PL6MIZCijoNGq7xv2oYU/PL3L0HIu3y6jClOgOcsVkVcf mby2UcjM0JDXqugvBtHv2tnzE30sShNr7pol4xQn1f2GBTHjNR/Y6kFPUKQ71OMv+8 CXAV0pUwcKSiBmpUSs4KwamCMs5Mp41rhBInVa4aJkWcpy7egqASOLKiXruSj/6Oet 8z00rIo6NpGTeXkw/SmuHqDm62zSehwdp3deWGr3UhHVfwMcx8DsNDEejqcmoR8b3x LZ0zEMUwuLprw== Date: Thu, 6 Aug 2026 10:48:39 +0100 From: "Lorenzo Stoakes (ARM)" To: Juan Yescas Cc: Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , open list , "open list:MEMORY MANAGEMENT - CORE" , android-mm@google.com, fvdl@google.com, tkjos@google.com, minchan@google.com, dskiba@google.com Subject: Re: [RFC PATCH v2 00/16] Page Alloc Hogger Message-ID: References: <20260806011048.517229-1-jyescas@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260806011048.517229-1-jyescas@google.com> X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: ADF5C8000D X-Stat-Signature: xx8zkuk656wg79yypycut5b8yq6mzasg X-HE-Tag: 1786009739-612032 X-HE-Meta: U2FsdGVkX18u27wMckl5P5CXSRxuptizeTncCygrYTJT14Dl61evrw+4NuTJydrLShQSVcY5wItK9/Jl7yuOrxIw8WFmL4HxVimTzTe2+0ZadPYJXJ1caZzzlsJg8sLQ4yELK2dSxHRXy5zvQXSf4ojKI5+/Z2AZ7utPLrUjKRg8fmyFCShMMfXwn2IvcRy9p38ZF6Oc09haNibzCqN8LoZkkpo/HIljqlLZVGBYOjeJMsh4iAJO03aUz5goCI8YkjvIKmrNV+H/LONkzDZ5DjhYSQp6AwjrIUgmhT9+dv/lErxzGUorKYsqD8qh1nJboN3GXPumaa5u8ClELEbCpcM+4ASPgAy6kMsW5ev481+GbM+rB/DIgk6utGFZBFbSA42yMnoPYBnXuiHxM3rahAaedhnBwXoO1u032gSP2OzxG4YWC9U1+pL+i4Xlbvvwq1OXYw++qyeJm1hnENA0wiPMRxT7RUo36am3Vm89YGBHk9Y20qC1TdvvrJLPCx9UZNG5yBNlycmrUelriaEHSSrxJwS8jLejw/wcBRg9R6p9j1oCTU/wno16PgBXbrYJ/82o+IMWHERUeit8mIo1j1uV0/VwKouHt9ThoZ4/7mU9O49yCUk0jK95uL7uf6tjjiNdk4awdEePtxQrjAOQlo7lCSSOwZvhCRwVd/mQY7CsIDCheT4Mc1Ksp+dCzaUk7YpzaOtQYrqFuJF1IEff0QinE4CIJ520g0oPtmhBFjwONftWb7ofTgN/qCdmTgvXOKswyRmpcL65ljDzF1PrnDmsRGMebDY8iXcGNlpbmEToER+csFuFBdiIeRNxMtEDe7AD6iLqI29Qkab5pW+XqfY3/n4xYyrLI3xl5x1BCH3nSFxljEcZxZmGlTrBTdOmmr/aZ2GfSmRAooPnmbf0alVNE+tJPdoEBcFHsQg+7jD40VxnX5ZkApJFFJX0k8/MR0bW6/+eAkhnI/q52D8 lzvuNlzl DPdtwkM1HeTiUM5RIQbjTlwfgY+YWwYKQY8NdT2NgwTcdVnmlFkMJKFzKGfZA6Bd7VVXeJRm/AtQPmQH2YwQMbiSSSN42AnXIVuiHgA19rvXiWIHmMNSUGThmLva+BGnZerMQkM3Kdp/bjOEf1up5nZMHNKNWsrNRlGRE/05LmAZ3YfFD6tAxc3H8rdDHUrUElFzg0LfLLvMJ6VMqt3AxkxrFZpQeJvjmrcTCLWVJMjWgq3WmA/tSuXfuRPYPElVgHekRRrZNaJi3MRhk6b1aw1LTwytVZkgRBCRWES62dE/Ib790ArNVs2AbkVcEUdmPwqqnCA+jydpNHYydxr/PQ3SS4Ebl2qbvUvemCtMY9SAVbd3D0V7GrEkmzA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Juan, While I think there's possibly value in people not re-implemented their own allocation injector, I don't think there's value in having this be part of core-mm. I really don't want this to form part of any contract or to be blessed in any way by core mm as it exposes internal implementation details and I really want to avoid adding extra maintainer workload here. I'd suggest keeping it as an out-of-tree module as David proposed previously ([0]). Alternatively, keeping it as part of tooling (e.g. in tools/testing) could also work. (This is no comment on how useful it might be for debugging or testing scenarios :) -- Cheers, Lorenzo [0]:https://lore.kernel.org/all/97605949-82c5-49e0-84b6-b42e8078b55d@kernel.org/