linux-kernel - [PATCH v2 1/8] rust: fs: add file::Offset type alias

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Message-ID: <20251020222722.240473-2-dakr@kernel.org>
Date: Tue, 21 Oct 2025 00:26:13 +0200
From: Danilo Krummrich <dakr@...nel.org>
To: gregkh@...uxfoundation.org,
	rafael@...nel.org,
	ojeda@...nel.org,
	alex.gaynor@...il.com,
	boqun.feng@...il.com,
	gary@...yguo.net,
	bjorn3_gh@...tonmail.com,
	lossin@...nel.org,
	a.hindborg@...nel.org,
	aliceryhl@...gle.com,
	tmgross@...ch.edu,
	mmaurer@...gle.com
Cc: rust-for-linux@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Danilo Krummrich <dakr@...nel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>,
	Jan Kara <jack@...e.cz>
Subject: [PATCH v2 1/8] rust: fs: add file::Offset type alias

Add a type alias for file offsets, i.e. bindings::loff_t. Trying to
avoid using raw bindings types, this seems to be the better alternative
compared to just using i64.

Cc: Alexander Viro <viro@...iv.linux.org.uk>
Cc: Christian Brauner <brauner@...nel.org>
Cc: Jan Kara <jack@...e.cz>
Signed-off-by: Danilo Krummrich <dakr@...nel.org>
---
Al, Christian: If you are okay with the patch, kindly provide an ACK, so I can
take it through the driver-core tree.
---
 rust/kernel/fs/file.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/rust/kernel/fs/file.rs b/rust/kernel/fs/file.rs
index cf06e73a6da0..021a6800b46c 100644
--- a/rust/kernel/fs/file.rs
+++ b/rust/kernel/fs/file.rs
@@ -17,6 +17,11 @@
 };
 use core::ptr;
 
+/// Primitive type representing the offset within a [`File`].
+///
+/// Type alias for `bindings::loff_t`.
+pub type Offset = bindings::loff_t;
+
 /// Flags associated with a [`File`].
 pub mod flags {
     /// File is opened in append mode.
-- 
2.51.0