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 90DDBE6F085 for ; Tue, 23 Dec 2025 17:11:56 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id DBECB6B0005; Tue, 23 Dec 2025 12:11:55 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id D6C2B6B0089; Tue, 23 Dec 2025 12:11:55 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C77D06B008A; Tue, 23 Dec 2025 12:11:55 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id B4F7C6B0005 for ; Tue, 23 Dec 2025 12:11:55 -0500 (EST) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 4F0A91A03E1 for ; Tue, 23 Dec 2025 17:11:55 +0000 (UTC) X-FDA: 84251378190.04.BF3CB02 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf04.hostedemail.com (Postfix) with ESMTP id BEDD340010 for ; Tue, 23 Dec 2025 17:11:53 +0000 (UTC) Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=fa+0Ubgf; spf=pass (imf04.hostedemail.com: domain of sashal@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sashal@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=1766509913; 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=NlmwdZqhPExcGZgM/pVZiC2lUJhmTkXwAn+qNuohbBI=; b=uUYaCoHpdhu8OfTUvOEFQ3HYwC8eFehaQ2E7M8MuqBfTnBbuQ1N/vdWJQ0sQF3U6/kIzhF +GBdPEWmj9FonCZXScs5uxHn1Du2dVyykbh2b/K3Jq6b19XX3Q7wvVw/aP96PAnWr9Xlzz Qrma4pINaLnEmk1pl0Jd1WluETnm7YU= ARC-Authentication-Results: i=1; imf04.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=fa+0Ubgf; spf=pass (imf04.hostedemail.com: domain of sashal@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=sashal@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1766509913; a=rsa-sha256; cv=none; b=22AJOokA5iw6aVUAGNBjCA6hAxgWqt1tmjrYCNfVq1zzClAQM9AdrYN1P1K04keWQKBl8I yFoOBYuJGpU1h8J0OesU5NylBKLtmGAYOre7/aARgST5SZubyG2xInffrDRnHBpQM7KA2B +fCRYPPso89a1u/PDt4L6O23Mm1MIjU= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id B5E6C41E5B; Tue, 23 Dec 2025 17:11:52 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59005C113D0; Tue, 23 Dec 2025 17:11:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766509912; bh=3um8NkjnKfQWblw0ttBXC1gQUUqnZlPZFVjmKn1p7PE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=fa+0UbgfGH0MW7oBnwI79BEfDFeL2kz26p3mGx0sCirQiG+ODvVSzIvze2Y4eZ39e WIzrCovlU7u1ZaXeiidmAy+OfcAiEQyWBxBq8TEgBFblUeLzUl71pnP8IwQYxRxZtl JU7DoafiH8mxnn2LoNc4c4dJAdE2oBfmG5UhDjQJJJ432y4bbFEKAVbwNtMFpz/VKJ 6AlMqdnjsTFz7IjJg58q5KShlRT8jwNW+ZHfTHRSECk5n7n3KNXCVAxif2wK9xXXXT E+/IjLB2oCGTQ1JX1lHXV5bbVjgxm5fyavrfeDQFfoQJYkrnbzjVcvXusb6YT55ENG LaGk5PAMnNqlg== Date: Tue, 23 Dec 2025 12:11:51 -0500 From: Sasha Levin To: Andrew Morton Cc: SeongJae Park , "David Hildenbrand (Red Hat)" , "Ritesh Harjani (IBM)" , Sourabh Jain , Borislav Petkov , Christophe Leroy , Heiko Carstens , Ingo Molnar , Madhavan Srinivasan , Michael Ellerman , Muchun Song , Oscar Salvador , Thomas Gleixner , Vasily Gorbik , linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, x86@kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6] mm/hugetlb: ignore hugepage kernel args if hugepages are unsupported Message-ID: References: <20251221104907.032abf56c67f3e50c9c94e31@linux-foundation.org> <20251223013045.4579-1-sj@kernel.org> <20251222183055.88c3cc1f0705c1dc29c7f011@linux-foundation.org> <20251223085434.a6d6ae08c3aedf420908f404@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20251223085434.a6d6ae08c3aedf420908f404@linux-foundation.org> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: BEDD340010 X-Stat-Signature: ipj197ibpwgcao1sajbexik3epxqmogx X-Rspam-User: X-HE-Tag: 1766509913-763745 X-HE-Meta: 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 aO/83lW/ DpDxKn7zsP80ZHY4XSAmyjBFN8A== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, 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 Tue, Dec 23, 2025 at 08:54:34AM -0800, Andrew Morton wrote: >On Tue, 23 Dec 2025 06:43:45 -0500 Sasha Levin wrote: > >> >> > Yes, -stable maintainers have been asked to only backport patches where >> >> > the MM developers asked for that, with cc:stable. There may be >> >> > slipups, but as far as I know this is working. >> >> > >> >> > I don't actually know how they determine which patches need this >> >> > special treatment. Pathname? Signed-off-by:akpm? >> >> >> >> I guess it is pathname, based on ignore_list file [1] of stable-queue repo. >> >> >> >> [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/ignore_list#n16 >> >> >> > >> >Oh, that's a bit sad. >> > >> >- other trees sometimes mess with mm/ and they probably aren't aware >> > that they need an explicit cc:stable. >> > >> >- misses drivers/block/zram and probably various other things that >> > the MM team maintains. >> > >> >Oh well, I guess simple mm/* coverage is good enough. But I do worry a >> >little that useful fixes coming into mm/ via other trees without >> >cc:stable will get missed. >> >> How should we improve the filter? mm/ AND signed off by akpm? > >I think just signed-off-by:akpm please. That way, mm fixes which come >in via other trees without cc:stable get backported. Ack >Obviously we'd prefer that such patches get appropriate consideration >by the MM developers but sometimes other-tree people aren't that >cooperative. In this case it's better to backport the thing rather >than missing a fix? I tend to err on the side of taking one extra thing rather than missing something :) Would you be interested in trying out AUTOSEL for mm/ again? In the current workflow I give about 2-3 weeks for review, and all it takes to have a patch dropped is to just reply with a "no". I can generate a series with mm/ patches from v6.18..v6.19-rc2 that don't have a Fixes/stable tag but the LLM thinks that it should be backported as a way for you and other mm/ folk to gauge the current state of AUTOSEL, if that helps? -- Thanks, Sasha