Use #[expect(lint)], not #[allow(lint)]

kernel/comps/framebuffer/src/lib.rs

@@ -31,9 +31,9 @@ fn framebuffer_init() -> Result<(), ComponentInitError> {
 pub(crate) static WRITER: Once<SpinLock<Writer>> = Once::new();
 
 // ignore the warnings since we use the `todo!` macro.
-#[allow(unused_variables)]
-#[allow(unreachable_code)]
-#[allow(clippy::diverging_sub_expression)]
+#[expect(unused_variables)]
+#[expect(unreachable_code)]
+#[expect(clippy::diverging_sub_expression)]
 pub(crate) fn init() {
     let mut writer = {
         let Some(framebuffer) = boot_info().framebuffer_arg else {

kernel/comps/mlsdisk/src/lib.rs

@@ -5,7 +5,7 @@
 #![feature(let_chains)]
 #![feature(negative_impls)]
 #![feature(slice_as_chunks)]
-#![allow(dead_code, unused_imports)]
+#![expect(dead_code, unused_imports)]
 
 mod error;
 mod layers;

kernel/comps/mlsdisk/src/tx/mod.rs

@@ -21,7 +21,7 @@ use crate::{
 };
 
 /// A transaction provider.
-#[allow(clippy::type_complexity)]
+#[expect(clippy::type_complexity)]
 pub struct TxProvider {
     id: u64,
     initializer_map: RwLock<HashMap<TypeId, Box<dyn Any + Send + Sync>>>,

kernel/comps/mlsdisk/src/util/lazy_delete.rs

@@ -40,7 +40,7 @@ use crate::prelude::*;
 /// // The deletion operation will be carried out when it is dropped
 /// drop(lazy_delete_u32);
 /// ```
-#[allow(clippy::type_complexity)]
+#[expect(clippy::type_complexity)]
 pub struct LazyDelete<T> {
     obj: T,
     is_deleted: AtomicBool,

kernel/comps/network/src/dma_pool.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: MPL-2.0
 
-#![allow(unused)]
+#![expect(unused)]
 
 use alloc::{
     collections::VecDeque,

kernel/comps/softirq/src/taskless.rs

@@ -80,7 +80,7 @@ impl Taskless {
         // Since the same taskless will not be executed concurrently,
         // it is safe to use a `RefCell` here though the `Taskless` will
         // be put into an `Arc`.
-        #[allow(clippy::arc_with_non_send_sync)]
+        #[expect(clippy::arc_with_non_send_sync)]
         Arc::new(Self {
             is_scheduled: AtomicBool::new(false),
             is_running: AtomicBool::new(false),

kernel/comps/virtio/src/device/input/device.rs

@@ -75,7 +75,7 @@ pub struct InputDevice {
     event_queue: SpinLock<VirtQueue>,
     status_queue: VirtQueue,
     event_table: EventTable,
-    #[allow(clippy::type_complexity)]
+    #[expect(clippy::type_complexity)]
     callbacks: RwLock<Vec<Arc<dyn Fn(InputEvent) + Send + Sync + 'static>>, LocalIrqDisabled>,
     transport: SpinLock<Box<dyn VirtioTransport>>,
 }

kernel/comps/virtio/src/device/network/header.rs

@@ -34,7 +34,7 @@ bitflags! {
 
 #[repr(u8)]
 #[derive(Default, Debug, Clone, Copy, TryFromInt)]
-#[allow(non_camel_case_types)]
+#[expect(non_camel_case_types)]
 pub enum GsoType {
     #[default]
     VIRTIO_NET_HDR_GSO_NONE = 0,

kernel/comps/virtio/src/transport/pci/capability.rs

@@ -11,7 +11,7 @@ use ostd::bus::pci::{
 
 #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
 #[repr(u8)]
-#[allow(clippy::enum_variant_names)]
+#[expect(clippy::enum_variant_names)]
 pub enum VirtioPciCpabilityType {
     CommonCfg = 1,
     NotifyCfg = 2,

kernel/comps/virtio/src/transport/pci/device.rs

@@ -268,7 +268,7 @@ impl VirtioTransport for VirtioPciModernTransport {
 }
 
 impl VirtioPciModernTransport {
-    #[allow(clippy::result_large_err)]
+    #[expect(clippy::result_large_err)]
     pub(super) fn new(
         common_device: PciCommonDevice,
     ) -> Result<Self, (BusProbeError, PciCommonDevice)> {

kernel/comps/virtio/src/transport/pci/legacy.rs

@@ -73,7 +73,7 @@ pub struct VirtioPciLegacyTransport {
 impl VirtioPciLegacyTransport {
     pub const QUEUE_ALIGN_SIZE: usize = 4096;
 
-    #[allow(clippy::result_large_err)]
+    #[expect(clippy::result_large_err)]
     pub(super) fn new(
         common_device: PciCommonDevice,
     ) -> Result<Self, (BusProbeError, PciCommonDevice)> {