From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4ED703A453A for ; Thu, 27 Aug 2026 23:31:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787873480; cv=none; b=Us3bc6lce15+ut5dBNxV+zN3H5nYiyshHi3NgN1Vqi/b/elqlDxC+s/vlI/nSN3V3u9ecuu9WeXoBKwLl9jgrwuw3P0C8XrVLp6VMD2ZLdZJG9f/PH/P6jkandADjMIAcd/AqrPor44BItSRxLq9wiey9uKBxzrpiT9XC09n21M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787873480; c=relaxed/simple; bh=3I5dS/SQ6pCyb3i0Ix/G3rblivqux+gR9oaHKYEaKnY=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=sqIsuFyJggabtS0+pEDFGgdIVfqgkkvmrdgH/arU7DUHe8zjDY2tCDHKCvn5CoKCeOBQ352R22x/ZXA24DNr/U6xiiJcREY7qOqTDG9+neSxSSTy5BL3qmZZ+fxoZ5RAdBB2RL45VmEvtAYgZgBnOsqHoYd3Yqeg454oojhi7lc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--stevensd.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=F0WE0Vee; arc=none smtp.client-ip=209.85.214.200 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--stevensd.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="F0WE0Vee" Received: by mail-pl1-f200.google.com with SMTP id d9443c01a7336-2d52734fc41so4602075ad.1 for ; Thu, 27 Aug 2026 16:31:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1787873479; x=1788478279; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=brDKxupp32vlfYsuON/JY3iAK7z2zOrfUeaeP3zp25g=; b=F0WE0VeeAQdzh0CIlwv1meqQbhzCsbR96VDhR0EaTiqYsmWRamm8ir76N2R0XrYMwZ l8xcCIZJ2d/B9i7wQdrdQiM/bB2ZQEutThINttOILceOC1swN03B9ctKDgsYGG1JC8Tv FzzUJSQbp5zeJkbiG6TEnVPX9R7VbgzcZOU2HFZfA1maAZ44o2nEERunsZBYIaj22hlx zGUAMD6h4Pg6DgkubIrXCKcLC4aKaxoU0NuiL6sXg+mgXgy+3hN0kayGgHmmF49W8Wil nLiCl9VLgyTyq73qDqdmQDzGyP15I9fupqSw2+InLeOsxXDROEBFYymCS8JBf+kEW5KE 2eJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787873479; x=1788478279; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=brDKxupp32vlfYsuON/JY3iAK7z2zOrfUeaeP3zp25g=; b=OrrgGwY+CEQMGcTNznRGi3tBWiPLQdFhyecfIFDMZ5asXbBt/v8NViUzi7UGEMu2aI rtoUNwDjLp1Y8peEzfyedJ9cf1NEeFONjP5j9h9+YVHq/pBnuSjnmXWkxTvOvNnWhg+1 9axfcV7NWpqUW+i5NUiun0BrMF3IMnSHdMGhqdgY1jXf0MWEQBGYJIfenShbBlKBQfsu MmvJXvhsJsARiq0SZVb075Q2X7gN9/KK4kf9SOFDkV5Hk8I5P4BffyMJ2mwJOf6eX4Tp 2Mj7sA3iQXn4PI/JqzNfbhWeiibVTniT9J+ukJgB/yHeKBlSTcYm0yVVWA4Qx+kMOZ8r yFIQ== X-Gm-Message-State: AFuF++kTbvZyAS+zZQEjk/MwCeQbs+ZhdUqLYOSCWD3clRp9GwGJi/hM iQjNAtJvHDtBX56m9jyJGaNgEV++aRnUeKU5JyLV40Ei+Tv91avcsCSp6DfgKkafaRye5AnllcP 3dy6RQA2T24PwRw== X-Received: from dybeb10.prod.google.com ([2002:a05:7300:a2ca:b0:328:4d52:8cd0]) (user=stevensd job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:458b:b0:2d6:f3f0:3e7a with SMTP id d9443c01a7336-2d74dc2ade3mr36333205ad.3.1787873478170; Thu, 27 Aug 2026 16:31:18 -0700 (PDT) Date: Thu, 27 Aug 2026 16:29:39 -0700 In-Reply-To: <20260827232948.2520558-1-stevensd@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260827232948.2520558-1-stevensd@google.com> X-Mailer: git-send-email 2.55.0.897.gb25b4bd76c-goog Message-ID: <20260827232948.2520558-2-stevensd@google.com> Subject: [RFC 01/10] Add !MEMCG memcg_list_lru_alloc implementation From: David Stevens To: Catalin Marinas , Will Deacon , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , Andrew Morton , Dave Chinner , Qi Zheng , Roman Gushchin , Muchun Song , Peter Zijlstra , Juri Lelli , Vincent Guittot , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Valentin Schneider , K Prateek Nayak , Uladzislau Rezki , David Hildenbrand , Lorenzo Stoakes , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Kees Cook , Sebastian Andrzej Siewior , Clark Williams , suleiman@google.com Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-rt-devel@lists.linux.dev, David Stevens Content-Type: text/plain; charset="UTF-8" Add a stub implementation of memcg_list_lru_alloc() when CONFIG_MEMCG isn't enabled. Signed-off-by: David Stevens --- include/linux/list_lru.h | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h index a450fffe1550..40eaeaa3424c 100644 --- a/include/linux/list_lru.h +++ b/include/linux/list_lru.h @@ -79,10 +79,10 @@ static inline int list_lru_init_memcg_key(struct list_lru *lru, struct shrinker return list_lru_init_memcg(lru, shrinker); } +#ifdef CONFIG_MEMCG int memcg_list_lru_alloc(struct mem_cgroup *memcg, struct list_lru *lru, gfp_t gfp); -#ifdef CONFIG_MEMCG /** * folio_memcg_list_lru_alloc - allocate list_lru heads for shrinkable folio * @folio: the newly allocated & charged folio @@ -106,6 +106,11 @@ static inline int folio_memcg_list_lru_alloc(struct folio *folio, { return 0; } + +static inline int memcg_list_lru_alloc(struct mem_cgroup *memcg, struct list_lru *lru, gfp_t gfp) +{ + return 0; +} #endif void memcg_reparent_list_lrus(struct mem_cgroup *memcg, struct mem_cgroup *parent); -- 2.55.0.897.gb25b4bd76c-goog