From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9A5A044B689 for ; Fri, 27 Feb 2026 19:30:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772220634; cv=none; b=nEaSxMicxqcrCNrhcT36445aShOfLOYYiDZ8Ewk9GFdelcRsMtNXHvbRp6+JFGWNsaOqJlYv/AenFGfM2zOfkgqW45NIV7UjW/0LStoC3cEhvK4vsFfDENYA/4UYiCwrehp8ZC6OWzUO+g5TT4jVViEYBPrajqGmf0BzW4wtsDQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772220634; c=relaxed/simple; bh=Y1gOIVTqDUoFIuPraJvRHSm3XRXvUUXuo2VeFUmVaTU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=b6JLOxVEsl5gTmVzUbFM5YCBeutRdcbHbAKZl3UNQoyfTdmz/FPyc1/pwyjnkPQ0BssY1bDdIC0i0HiahSJZJ9j/U2PYpzJw7yztSlPPeD3G6laCmkNeNpt4pd/9F1mQkSqn+C7cAtusv4uf7T2VTLu+fz0xq944nSJ821BEbTE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=GfTopM/F; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="GfTopM/F" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90C2AC4AF09; Fri, 27 Feb 2026 19:30:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772220634; bh=Y1gOIVTqDUoFIuPraJvRHSm3XRXvUUXuo2VeFUmVaTU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GfTopM/FhZ5VP9VNdyT2qNcb1FactWxr+NX8w/TMapj8UkWMzPTsh68rC1Wk9kC5j d63Zk+r5cHGa31JMvay8jYszIcnzvWzHo0e9TMTWgAeOOugetfWm4teEeepImg3pni tB0rfJsQZicMlrSb7VZMNXRfMI+LQXuoC6P17nQU0RhsTRwmJuGuq4jZbgqEhXAbQw AKEmsX9g0YcU9DL5VLDzVfJnm/8isQVnP5knrLC8SWaTXB4WG9s7VTesJjNA4sBFFr q4YY+m/i4FuPUMWw+d7uJGxbdKuJL6OyKqz7FR62QmGSEF/Ji4SWbDc/bawQuy1Bk+ 3lp9G15LOI1YQ== Received: from phl-compute-10.internal (phl-compute-10.internal [10.202.2.50]) by mailfauth.phl.internal (Postfix) with ESMTP id AF351F40068; Fri, 27 Feb 2026 14:30:32 -0500 (EST) Received: from phl-frontend-04 ([10.202.2.163]) by phl-compute-10.internal (MEProxy); Fri, 27 Feb 2026 14:30:32 -0500 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgddvgeelkeegucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepfdfmihhrhihl ucfuhhhuthhsvghmrghuucdlofgvthgrmddfuceokhgrsheskhgvrhhnvghlrdhorhhgqe enucggtffrrghtthgvrhhnpefhudejfedvgeekffefvdekheekkeeuveeftdelheegteel gfefveevueekhfdtteenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrih hlfhhrohhmpehkihhrihhllhdomhgvshhmthhprghuthhhphgvrhhsohhnrghlihhthidq udeiudduiedvieehhedqvdekgeeggeejvdekqdhkrghspeepkhgvrhhnvghlrdhorhhgse hshhhuthgvmhhovhdrnhgrmhgvpdhnsggprhgtphhtthhopedvledpmhhouggvpehsmhht phhouhhtpdhrtghpthhtoheprghkphhmsehlihhnuhigqdhfohhunhgurghtihhonhdroh hrghdprhgtphhtthhopehmuhgthhhunhdrshhonhhgsehlihhnuhigrdguvghvpdhrtghp thhtohepuggrvhhiugesrhgvughhrghtrdgtohhmpdhrtghpthhtohepfihilhhlhiesih hnfhhrrgguvggrugdrohhrghdprhgtphhtthhopehushgrmhgrrghrihhfieegvdesghhm rghilhdrtghomhdprhgtphhtthhopehfvhgulhesghhoohhglhgvrdgtohhmpdhrtghpth htohepohhsrghlvhgrughorhesshhushgvrdguvgdprhgtphhtthhopehrphhptheskhgv rhhnvghlrdhorhhgpdhrtghpthhtohepvhgsrggskhgrsehsuhhsvgdrtgii X-ME-Proxy: Feedback-ID: i10464835:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 27 Feb 2026 14:30:31 -0500 (EST) From: "Kiryl Shutsemau (Meta)" To: Andrew Morton , Muchun Song , David Hildenbrand , Matthew Wilcox , Usama Arif , Frank van der Linden Cc: Oscar Salvador , Mike Rapoport , Vlastimil Babka , Lorenzo Stoakes , Zi Yan , Baoquan He , Michal Hocko , Johannes Weiner , Jonathan Corbet , Huacai Chen , WANG Xuerui , Palmer Dabbelt , Paul Walmsley , Albert Ou , Alexandre Ghiti , kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, Kiryl Shutsemau , "David Hildenbrand (Red Hat)" Subject: [PATCHv7 01/18] mm: Move MAX_FOLIO_ORDER definition to mmzone.h Date: Fri, 27 Feb 2026 19:30:02 +0000 Message-ID: <20260227193030.272078-1-kas@kernel.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20260202155634.650837-1-kas@kernel.org> References: <20260202155634.650837-1-kas@kernel.org> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Kiryl Shutsemau Move MAX_FOLIO_ORDER definition from mm.h to mmzone.h. This is preparation for adding the vmemmap_tails array to struct zone, which requires MAX_FOLIO_ORDER to be available in mmzone.h. Signed-off-by: Kiryl Shutsemau Acked-by: David Hildenbrand (Red Hat) Acked-by: Zi Yan Acked-by: Muchun Song Acked-by: Usama Arif Reviewed-by: Vlastimil Babka --- include/linux/mm.h | 31 ------------------------------- include/linux/mmzone.h | 31 +++++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+), 31 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 5be3d8a8f806..7f4dbbb9d783 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -27,7 +27,6 @@ #include #include #include -#include #include #include #include @@ -2479,36 +2478,6 @@ static inline unsigned long folio_nr_pages(const struct folio *folio) return folio_large_nr_pages(folio); } -#if !defined(CONFIG_HAVE_GIGANTIC_FOLIOS) -/* - * We don't expect any folios that exceed buddy sizes (and consequently - * memory sections). - */ -#define MAX_FOLIO_ORDER MAX_PAGE_ORDER -#elif defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) -/* - * Only pages within a single memory section are guaranteed to be - * contiguous. By limiting folios to a single memory section, all folio - * pages are guaranteed to be contiguous. - */ -#define MAX_FOLIO_ORDER PFN_SECTION_SHIFT -#elif defined(CONFIG_HUGETLB_PAGE) -/* - * There is no real limit on the folio size. We limit them to the maximum we - * currently expect (see CONFIG_HAVE_GIGANTIC_FOLIOS): with hugetlb, we expect - * no folios larger than 16 GiB on 64bit and 1 GiB on 32bit. - */ -#define MAX_FOLIO_ORDER get_order(IS_ENABLED(CONFIG_64BIT) ? SZ_16G : SZ_1G) -#else -/* - * Without hugetlb, gigantic folios that are bigger than a single PUD are - * currently impossible. - */ -#define MAX_FOLIO_ORDER PUD_ORDER -#endif - -#define MAX_FOLIO_NR_PAGES (1UL << MAX_FOLIO_ORDER) - /* * compound_nr() returns the number of pages in this potentially compound * page. compound_nr() can be called on a tail page, and is defined to diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 3e51190a55e4..be8ce40b5638 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -23,6 +23,7 @@ #include #include #include +#include #include /* Free memory management - zoned buddy allocator. */ @@ -61,6 +62,36 @@ */ #define PAGE_ALLOC_COSTLY_ORDER 3 +#if !defined(CONFIG_HAVE_GIGANTIC_FOLIOS) +/* + * We don't expect any folios that exceed buddy sizes (and consequently + * memory sections). + */ +#define MAX_FOLIO_ORDER MAX_PAGE_ORDER +#elif defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) +/* + * Only pages within a single memory section are guaranteed to be + * contiguous. By limiting folios to a single memory section, all folio + * pages are guaranteed to be contiguous. + */ +#define MAX_FOLIO_ORDER PFN_SECTION_SHIFT +#elif defined(CONFIG_HUGETLB_PAGE) +/* + * There is no real limit on the folio size. We limit them to the maximum we + * currently expect (see CONFIG_HAVE_GIGANTIC_FOLIOS): with hugetlb, we expect + * no folios larger than 16 GiB on 64bit and 1 GiB on 32bit. + */ +#define MAX_FOLIO_ORDER get_order(IS_ENABLED(CONFIG_64BIT) ? SZ_16G : SZ_1G) +#else +/* + * Without hugetlb, gigantic folios that are bigger than a single PUD are + * currently impossible. + */ +#define MAX_FOLIO_ORDER PUD_ORDER +#endif + +#define MAX_FOLIO_NR_PAGES (1UL << MAX_FOLIO_ORDER) + enum migratetype { MIGRATE_UNMOVABLE, MIGRATE_MOVABLE, -- 2.51.2