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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> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Disposition: inline In-Reply-To: <20251223085434.a6d6ae08c3aedf420908f404@linux-foundation.org> 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