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rust: sync: Add MutexGuard type alias

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A simple helper alias for code that needs to deal with Guard types returned
from Mutexes.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://lore.kernel.org/r/20241120222742.2490495-2-lyude@redhat.com
This commit is contained in:
Lyude Paul 2024-11-20 17:26:28 -05:00 committed by Boqun Feng
parent daa03fe50e
commit 37624dde47
2 changed files with 9 additions and 1 deletions
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2
rust/kernel/sync.rs
View file

@ -16,7 +16,7 @@
pub use arc::{Arc, ArcBorrow, UniqueArc};
pub use condvar::{new_condvar, CondVar, CondVarTimeoutResult};
pub use lock::global::{global_lock, GlobalGuard, GlobalLock, GlobalLockBackend, GlobalLockedBy};
pub use lock::mutex::{new_mutex, Mutex};
pub use lock::mutex::{new_mutex, Mutex, MutexGuard};
pub use lock::spinlock::{new_spinlock, SpinLock};
pub use locked_by::LockedBy;

8
rust/kernel/sync/lock/mutex.rs
View file

@ -86,6 +86,14 @@ macro_rules! new_mutex {
/// [`struct mutex`]: srctree/include/linux/mutex.h
pub type Mutex<T> = super::Lock<T, MutexBackend>;
/// A [`Guard`] acquired from locking a [`Mutex`].
///
/// This is simply a type alias for a [`Guard`] returned from locking a [`Mutex`]. It will unlock
/// the [`Mutex`] upon being dropped.
///
/// [`Guard`]: super::Guard
pub type MutexGuard<'a, T> = super::Guard<'a, T, MutexBackend>;
/// A kernel `struct mutex` lock backend.
pub struct MutexBackend;