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 AD94437BE6C; Tue, 24 Feb 2026 11:20:24 +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=1771932024; cv=none; b=Elk2pyx1rEzRPq+trzhlNSJwDdmcWvLRccWdSu9hJzoSSxGnlUCCDKg0wugUbCACLLQd5dEAqlr4NLbi0gU6SHHvMvACZJST4/kY8A939wl3+n1ISRuPxcyscq2g2npFVm+jAhH+1B2KCRMYP2Rkl1aWP7fm/u9b+1Pby8XW/6Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771932024; c=relaxed/simple; bh=u+CxE4WAb4lLYs646rqUMrYESFoSfCpkJ/yBahV7oWU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=kFm+r1S20Zpsjg4ZHRX3suZihP8ZOYekr1m5+VXqDpCBgd1qWmpF71Xm51dLf8mZx9hDH62ICF3Y6WRGo4bPqj3we82MpMZy07KfXmdblRiwRZ3KwIwT1V2gtBajg3FcyNPqnDx4qSyWXbNRGRiFTmjMRLVreyqXa45k4Ek3C7o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lEbr9SH4; 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="lEbr9SH4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 953B3C116D0; Tue, 24 Feb 2026 11:20:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771932024; bh=u+CxE4WAb4lLYs646rqUMrYESFoSfCpkJ/yBahV7oWU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=lEbr9SH4g+vkYJTX1S89jMNlf3p84ZRU/v6+jnkKrqULJxEJdYlaFLJCqESxXcBdB 95iKFGtV5tH/t/0vNO+wxU1aDpsO11zqlfymtcsNTA4YvmO9YR5aYjFFMj7Ln8loPY rEgIKnAaxeg9kAjJlVwUqwUS0bEBBgWhB6fED96nwJgySVJezf35zzy0HLBtD08lQt 18In2j581km/tx1LLr/t4qqKAv5qEGQ1bpe2ctkMSNIPvMoiyy72CIAU4GrmCyvsRy yWMO3Jz5aMRBD1stVUIxNLV6DUau4VBUlFtdK8KkiaW/QzOk4ZH4TKPq+YaDfDzI1w ytRWw5P2ZZ/YQ== From: Andreas Hindborg Date: Tue, 24 Feb 2026 12:18:05 +0100 Subject: [PATCH v16 10/10] rust: page: add `from_raw()` Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260224-unique-ref-v16-10-c21afcb118d3@kernel.org> References: <20260224-unique-ref-v16-0-c21afcb118d3@kernel.org> In-Reply-To: <20260224-unique-ref-v16-0-c21afcb118d3@kernel.org> To: Miguel Ojeda , 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 e21f02ae47b72..96f1ec125f043 100644 --- a/rust/kernel/page.rs +++ b/rust/kernel/page.rs @@ -192,6 +192,17 @@ 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 convertible to a shared reference with a lifetime 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 convertible to a shared + // reference. + unsafe { &*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