From nobody Mon Feb 9 01:44:06 2026 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 79E163A8FFC for ; Wed, 21 Jan 2026 16:23:06 +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=1769012586; cv=none; b=mpR3hWiDuZOxR1QLmi9heUHpREMyQZWjrxvQrmrqZQsykGKfwnWAmKlOBXIteC5NPDU6U/IF/TCJrkPWrmjLWxdJ+0ae5LZSnW51+xNmg1UBelYFE1YDvRvqLBxoZcVxawVdZzwrTp+0oS9jPCGOIkydPmLVHCsC4BdFfAqSsWM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769012586; c=relaxed/simple; bh=WUDBQAa58qP3pHbP6EnrIXpUoC+TsGSOWrtaUEZdRJA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=o8ogBFMPJ5DT1OdbwuA1KikvUf480ryokMzsCmd6RJrC5KCGpjeawoeRX7hjIQPDOuDcq0FZ1qiz6WzkXU76e7QlZDw7ojZhee+M9XHeLJ4mjxYMJ35lZcTXkT4pJmHRLQkp0tH+V2VChHtjkmQHjD1syYzwsDBm/YoaAr5R5iw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hPtXv11L; 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="hPtXv11L" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6A191C116D0; Wed, 21 Jan 2026 16:23:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1769012586; bh=WUDBQAa58qP3pHbP6EnrIXpUoC+TsGSOWrtaUEZdRJA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hPtXv11Ln2gr48O8y5lhP2wMqXdSyJ9PLs6FQDAWv2mjYiDNnuuyaLTbk+R8OpGeR 3HhjJsCVkqM24M7B/uOVMMftBXp4LTaqXxmB+F8KrL1t9ZMbh1krAoHNZXtM0EiNE7 8Q+aJOuHOMlqexznKe7fxgpiD/NbARzvjsWZ0qjREeyXDiba3K3Ue2W4N37osnQsWD T1saLYjV9sVpg9ilt9IMy9q1/0YMg798b6u5h9i8ltdBHY3ehmX39qNsV3uqOhfnVz V6RIt4hxe0NAE+7KuHzwgqdAZ4SVgcSeNo+BCauRm/CZlGvqdEC4I/F9ANjOnElo8X vM/sp6KF1mXAA== Received: from phl-compute-03.internal (phl-compute-03.internal [10.202.2.43]) by mailfauth.phl.internal (Postfix) with ESMTP id 575C2F4006C; Wed, 21 Jan 2026 11:23:04 -0500 (EST) Received: from phl-frontend-03 ([10.202.2.162]) by phl-compute-03.internal (MEProxy); Wed, 21 Jan 2026 11:23:04 -0500 X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgddugeefjeehucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepmfhirhihlhcu ufhhuhhtshgvmhgruhcuoehkrghssehkvghrnhgvlhdrohhrgheqnecuggftrfgrthhtvg hrnhephfdufeejhefhkedtuedvfeevjeffvdfhvedtudfgudffjeefieekleehvdetvdev necuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepkhhirh hilhhlodhmvghsmhhtphgruhhthhhpvghrshhonhgrlhhithihqdduieduudeivdeiheeh qddvkeeggeegjedvkedqkhgrsheppehkvghrnhgvlhdrohhrghesshhhuhhtvghmohhvrd hnrghmvgdpnhgspghrtghpthhtohepvddtpdhmohguvgepshhmthhpohhuthdprhgtphht thhopegrkhhpmheslhhinhhugidqfhhouhhnuggrthhiohhnrdhorhhgpdhrtghpthhtoh epmhhutghhuhhnrdhsohhngheslhhinhhugidruggvvhdprhgtphhtthhopegurghvihgu sehkvghrnhgvlhdrohhrghdprhgtphhtthhopeifihhllhihsehinhhfrhgruggvrggurd horhhgpdhrtghpthhtohepuhhsrghmrggrrhhifheigedvsehgmhgrihhlrdgtohhmpdhr tghpthhtohepfhhvughlsehgohhoghhlvgdrtghomhdprhgtphhtthhopehoshgrlhhvrg guohhrsehsuhhsvgdruggvpdhrtghpthhtoheprhhpphhtsehkvghrnhgvlhdrohhrghdp rhgtphhtthhopehvsggrsghkrgesshhushgvrdgtii X-ME-Proxy: Feedback-ID: i10464835:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 21 Jan 2026 11:23:03 -0500 (EST) From: Kiryl Shutsemau 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 , kernel-team@meta.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Kiryl Shutsemau Subject: [PATCHv4 04/14] mm: Move set/clear_compound_head() next to compound_head() Date: Wed, 21 Jan 2026 16:22:41 +0000 Message-ID: <20260121162253.2216580-5-kas@kernel.org> X-Mailer: git-send-email 2.51.2 In-Reply-To: <20260121162253.2216580-1-kas@kernel.org> References: <20260121162253.2216580-1-kas@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Move set_compound_head() and clear_compound_head() to be adjacent to the compound_head() function in page-flags.h. These functions encode and decode the same compound_info field, so keeping them together makes it easier to verify their logic is consistent, especially when the encoding changes. Signed-off-by: Kiryl Shutsemau Reviewed-by: Muchun Song Reviewed-by: Zi Yan --- include/linux/page-flags.h | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 72c933a43b6a..0de7db7efb00 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -290,6 +290,18 @@ static __always_inline unsigned long _compound_head(co= nst struct page *page) =20 #define compound_head(page) ((typeof(page))_compound_head(page)) =20 +static __always_inline void set_compound_head(struct page *page, + const struct page *head, + unsigned int order) +{ + WRITE_ONCE(page->compound_info, (unsigned long)head + 1); +} + +static __always_inline void clear_compound_head(struct page *page) +{ + WRITE_ONCE(page->compound_info, 0); +} + /** * page_folio - Converts from page to folio. * @p: The page. @@ -865,18 +877,6 @@ static inline bool folio_test_large(const struct folio= *folio) return folio_test_head(folio); } =20 -static __always_inline void set_compound_head(struct page *page, - const struct page *head, - unsigned int order) -{ - WRITE_ONCE(page->compound_info, (unsigned long)head + 1); -} - -static __always_inline void clear_compound_head(struct page *page) -{ - WRITE_ONCE(page->compound_info, 0); -} - #ifdef CONFIG_TRANSPARENT_HUGEPAGE static inline void ClearPageCompound(struct page *page) { --=20 2.51.2