[PATCH 07/13] rust: kernel: unify spelling of refcount in docs

[Valentin Obst <kernel@valentinobst.de>]

Replace instances of 'ref-count[ed]' with 'refcount[ed]' to increase
consistency within the Rust documentation. The latter form is used more
widely in the rest of the kernel:

```console
$ rg '(\*|//).*?\srefcount(|ed)[\s,.]' | wc -l
1605
$ rg '(\*|//).*?\sref-count(|ed)[\s,.]' | wc -l
43
```

(numbers are for Commit 052d534373b7)

Signed-off-by: Valentin Obst <kernel@valentinobst.de>
---
 rust/kernel/sync/arc.rs | 8 ++++----
 rust/kernel/task.rs     | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs
index 77cdbcf7bd2e..6c46b1affca5 100644
--- a/rust/kernel/sync/arc.rs
+++ b/rust/kernel/sync/arc.rs
@@ -56,7 +56,7 @@
 ///     b: u32,
 /// }
 ///
-/// // Create a ref-counted instance of `Example`.
+/// // Create a refcounted instance of `Example`.
 /// let obj = Arc::try_new(Example { a: 10, b: 20 })?;
 ///
 /// // Get a new pointer to `obj` and increment the refcount.
@@ -510,7 +510,7 @@ fn deref(&self) -> &Self::Target {
 /// # test().unwrap();
 /// ```
 ///
-/// In the following example we first allocate memory for a ref-counted `Example` but we don't
+/// In the following example we first allocate memory for a refcounted `Example` but we don't
 /// initialise it on allocation. We do initialise it later with a call to [`UniqueArc::write`],
 /// followed by a conversion to `Arc<Example>`. This is particularly useful when allocation happens
 /// in one context (e.g., sleepable) and initialisation in another (e.g., atomic):
@@ -560,7 +560,7 @@ impl<T> UniqueArc<T> {
     /// Tries to allocate a new [`UniqueArc`] instance.
     pub fn try_new(value: T) -> Result<Self, AllocError> {
         Ok(Self {
-            // INVARIANT: The newly-created object has a ref-count of 1.
+            // INVARIANT: The newly-created object has a refcount of 1.
             inner: Arc::try_new(value)?,
         })
     }
@@ -574,7 +574,7 @@ pub fn try_new_uninit() -> Result<UniqueArc<MaybeUninit<T>>, AllocError> {
             data <- init::uninit::<T, AllocError>(),
         }? AllocError))?;
         Ok(UniqueArc {
-            // INVARIANT: The newly-created object has a ref-count of 1.
+            // INVARIANT: The newly-created object has a refcount of 1.
             // SAFETY: The pointer from the `Box` is valid.
             inner: unsafe { Arc::from_inner(Box::leak(inner).into()) },
         })
diff --git a/rust/kernel/task.rs b/rust/kernel/task.rs
index 9451932d5d86..818ac51b06b6 100644
--- a/rust/kernel/task.rs
+++ b/rust/kernel/task.rs
@@ -23,7 +23,7 @@ macro_rules! current {
 ///
 /// All instances are valid tasks created by the C portion of the kernel.
 ///
-/// Instances of this type are always ref-counted, that is, a call to `get_task_struct` ensures
+/// Instances of this type are always refcounted, that is, a call to `get_task_struct` ensures
 /// that the allocation remains valid at least until the matching call to `put_task_struct`.
 ///
 /// # Examples
@@ -147,7 +147,7 @@ pub fn wake_up(&self) {
     }
 }
 
-// SAFETY: The type invariants guarantee that `Task` is always ref-counted.
+// SAFETY: The type invariants guarantee that `Task` is always refcounted.
 unsafe impl crate::types::AlwaysRefCounted for Task {
     fn inc_ref(&self) {
         // SAFETY: The existence of a shared reference means that the refcount is nonzero.
-- 
2.43.0