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 1A5EF1DA3D for ; Fri, 8 Aug 2025 18:12:22 +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=1754676743; cv=none; b=aZUdthhUxn4mxzg+jAWGYc8Qp1nSWPhjxYV6lzCCEOfieQBWQGXBd/5KJuCc+Clq9vnmEDxMOVEFQg6ZysA4KGDTlSlwDCsDH7mJtcbc0umDN4Qnyo1rDeG9vs5VNbeRVtHKj08TEKf3BrrBhzsWbnRyoTOn+YNH9yNp58voSRk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754676743; c=relaxed/simple; bh=oYesJmIJp0PAia0LKzFLtEpcWtG1FumPIbQCyxsRt1A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=FOTe2Z+rGYo9imqVRvZ780AFr3mlBoDlJ99p1aGxZrQhNM6lyQsuAaVkRuWoQ/dtVCtHo+WJ0MFaeEA672afhbbQ0PzPpqC0+8K6UQg3QKSsstE7FK2Kn84WwGNkrbnfd51tK9D4bhHSjYgFUKzinr211aThsPYcS1y2gFxeo+M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=m3xlCaj0; 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="m3xlCaj0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3F3AFC4CEED; Fri, 8 Aug 2025 18:12:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754676742; bh=oYesJmIJp0PAia0LKzFLtEpcWtG1FumPIbQCyxsRt1A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=m3xlCaj0B0De4WvpgyrgCp0m4RlJlz3gT/hH5Ouncv5vnp7WAOD8jRJ6EmE34zy9V F8WodsXJMulJmYLQVO36WoRFvIKaRmWjBJVml4yt6JSTG+itxy5+iemVJerf1fm7O/ kkQGjMPJq7mEduH+epSL4qMaIlwqEzoBq95paGOeM8pv5QWhDnfZh2CA9ND1Mo47xk XpNfCbLJYCXrrjARZF1MVtHWoHNrml1rxCAHXB506kDc5sQCiGFiFtz5MnRIbV3juF eoDkwk0LoSCE6VC8FjSzu8r7/02Vg/O1IT97PSYDzFkemVGg1DxUE0vGp4Rotz5qhb xU9Yfvl2nCxSQ== From: Danilo Krummrich To: lorenzo.stoakes@oracle.com, vbabka@suse.cz, Liam.Howlett@oracle.com, urezki@gmail.com, ojeda@kernel.org, alex.gaynor@gmail.com, boqun.feng@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, abdiel.janulgue@gmail.com, acourbot@nvidia.com Cc: rust-for-linux@vger.kernel.org, Danilo Krummrich Subject: [PATCH v3 4/7] rust: page: define trait IntoPageIter Date: Fri, 8 Aug 2025 20:10:18 +0200 Message-ID: <20250808181155.223504-5-dakr@kernel.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250808181155.223504-1-dakr@kernel.org> References: <20250808181155.223504-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The IntoPageIter trait provides a common interface for types that provide a page iterator, such as VmallocPageIter. Subsequent patches will leverage this to let VBox and VVec provide a VmallocPageIter though this trait. Signed-off-by: Danilo Krummrich --- rust/kernel/page.rs | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/rust/kernel/page.rs b/rust/kernel/page.rs index 631718a6ad7d..bfb5898ab4b5 100644 --- a/rust/kernel/page.rs +++ b/rust/kernel/page.rs @@ -103,6 +103,16 @@ fn deref(&self) -> &Self::Target { } } +/// Trait to be implemented by types, which provide an [`Iterator`] implementation of +/// [`BorrowedPage`] items, such as [`VmallocPageIter`](kernel::alloc::allocator::VmallocPageIter). +pub trait IntoPageIter<'a> { + /// The [`Iterator`] type, e.g. [`VmallocPageIter`](kernel::alloc::allocator::VmallocPageIter). + type Iter: Iterator>; + + /// Returns an [`Iterator`] of [`BorrowedPage`] items over all pages owned by `self`. + fn page_iter(&'a mut self) -> Self::Iter; +} + /// A pointer to a page that owns the page allocation. /// /// # Invariants -- 2.50.1