linux-kernel - [PATCH 2/9] rust: block: add block related constants

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Message-Id: <20250616-rnull-up-v6-16-v1-2-a4168b8e76b2@kernel.org>
Date: Mon, 16 Jun 2025 15:23:52 +0200
From: Andreas Hindborg <a.hindborg@...nel.org>
To: Boqun Feng <boqun.feng@...il.com>, Miguel Ojeda <ojeda@...nel.org>, 
 Alex Gaynor <alex.gaynor@...il.com>, Gary Guo <gary@...yguo.net>, 
 Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
 Benno Lossin <lossin@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, 
 Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, 
 Jens Axboe <axboe@...nel.dk>
Cc: linux-block@...r.kernel.org, rust-for-linux@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Andreas Hindborg <a.hindborg@...nel.org>
Subject: [PATCH 2/9] rust: block: add block related constants

Add a few block subsystem constants to the rust `kernel::block` name space.
This makes it easier to access the constants from rust code.

Signed-off-by: Andreas Hindborg <a.hindborg@...nel.org>
---
 rust/kernel/block.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/rust/kernel/block.rs b/rust/kernel/block.rs
index 150f710efe5b..7461adf4d7e0 100644
--- a/rust/kernel/block.rs
+++ b/rust/kernel/block.rs
@@ -3,3 +3,15 @@
 //! Types for working with the block layer.
 
 pub mod mq;
+
+/// Bit mask for masking out [`SECTOR_SIZE`]
+pub const SECTOR_MASK: u32 = bindings::SECTOR_MASK;
+
+/// Sectors are size `1 << SECTOR_SHIFT`.
+pub const SECTOR_SHIFT: u32 = bindings::SECTOR_SHIFT;
+
+/// Size of a sector.
+pub const SECTOR_SIZE: u32 = bindings::SECTOR_SIZE;
+
+/// Power of two difference in size of a page and size of a sector.
+pub const PAGE_SECTORS_SHIFT: u32 = bindings::PAGE_SECTORS_SHIFT;

-- 
2.47.2