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 A4F03E9537B for ; Wed, 4 Feb 2026 11:58:44 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 15A926B00AA; Wed, 4 Feb 2026 06:58:44 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 1257C6B00AB; Wed, 4 Feb 2026 06:58:44 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0309C6B00AC; Wed, 4 Feb 2026 06:58:43 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id E34376B00AA for ; Wed, 4 Feb 2026 06:58:43 -0500 (EST) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id B31F41B0277 for ; Wed, 4 Feb 2026 11:58:43 +0000 (UTC) X-FDA: 84406627326.01.283E68D Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf15.hostedemail.com (Postfix) with ESMTP id DFD9BA0009 for ; Wed, 4 Feb 2026 11:58:41 +0000 (UTC) Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Gz7NyLru; spf=pass (imf15.hostedemail.com: domain of a.hindborg@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=a.hindborg@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=1770206322; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=ntJYUYqYp3Gn7FI7pRL2pZqwu0nCn58LEkukXjOhJQ8=; b=NGsJ4R5FnHO/bSnP39UKDLtj5XG32eqRnlHPC+L19E4TwLcq+DEDbV1BBmrsEuqLXhIscS RKyiBxBwpgrwkaFQJ6O/45ERrmNhRAL3PSEluBTtaORcYRAVtFxSkgwAfMvse4la4EypRr kxxJ9mUnUY3QltrIorNv7GILTLY3Z1o= ARC-Authentication-Results: i=1; imf15.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=Gz7NyLru; spf=pass (imf15.hostedemail.com: domain of a.hindborg@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=a.hindborg@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1770206322; a=rsa-sha256; cv=none; b=IumBWPIwLhcysv/9GUPvI8uhBmYYKHPb2djDvzGUipsHNTX7gUU28U6TcBrfCSq5VfPSUW VeRwghQwrtsRoRgO2qd+yzmQ+5S+qFBsQ82i5Ly7ygy8gOwCnFjImdEsZViWNEGeyV+GtW 6It37W1ioKrfRYu/YxJ9nxNX/KFLtjM= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 1ECFA437CB; Wed, 4 Feb 2026 11:58:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EDB73C4CEF7; Wed, 4 Feb 2026 11:58:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770206321; bh=4kJUgBgTj0V7kRaDlo9MltCBPjRgIT4dj8eMOKXfB5o=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=Gz7NyLruiwim/m3qBSE5DCyGcBGfDnNAOVb4JpibsYAUsWYSmm1MpCPHgWwtj/fRE e8VUFzL72M3Zx6A1qZzoh/IA8ii2wIC7I4cJhh+uULDLUPyMKnEvCcEKQxVOEmnib9 DoSHh3MiiduX7HJcOEoYvDR16yqzuWAG0XdMb3TjJ4hksqK25J8oJA81S9JdyO6hKT KumBA+dRzkFBjLvTQYFQ6GwuEX6rkbvQzlazbWUeATLs2BAmRQQCZoHCpYtJV8wBG0 WlW6SNySBC1jA+L56+L0NXtFEY6GCjF7HOrLV7AMDGIWW1Tfv0xJw3TcrW5yiutEIv NrzqX1zgg14vw== From: Andreas Hindborg Date: Wed, 04 Feb 2026 12:56:53 +0100 Subject: [PATCH v14 9/9] rust: page: add `from_raw()` MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260204-unique-ref-v14-9-17cb29ebacbb@kernel.org> References: <20260204-unique-ref-v14-0-17cb29ebacbb@kernel.org> In-Reply-To: <20260204-unique-ref-v14-0-17cb29ebacbb@kernel.org> To: Miguel Ojeda , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Alice Ryhl , Trevor Gross , Danilo Krummrich , Greg Kroah-Hartman , Dave Ertman , Ira Weiny , Leon Romanovsky , Paul Moore , Serge Hallyn , "Rafael J. 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Signed-off-by: Andreas Hindborg --- rust/kernel/page.rs | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/rust/kernel/page.rs b/rust/kernel/page.rs index 4591b7b01c3d2..803f3e3d76b22 100644 --- a/rust/kernel/page.rs +++ b/rust/kernel/page.rs @@ -191,6 +191,17 @@ pub fn nid(&self) -> i32 { unsafe { bindings::page_to_nid(self.as_ptr()) } } + /// Create a `&Page` from a raw `struct page` pointer + /// + /// # Safety + /// + /// `ptr` must be valid for use as a reference for the duration of `'a`. + pub unsafe fn from_raw<'a>(ptr: *const bindings::page) -> &'a Self { + // SAFETY: By function safety requirements, ptr is not null and is + // valid for use as a reference. + unsafe { &*Opaque::cast_from(ptr).cast::() } + } + /// Runs a piece of code with this page mapped to an address. /// /// The page is unmapped when this call returns. -- 2.51.2