treewide: finish Rust comments in period

Signed-off-by: Miguel Ojeda <ojeda@kernel.org>

Author: ojeda

rust/kernel/file.rs

@@ -47,7 +47,7 @@ pub mod flags {
     /// Ensure that this file is created with the `open(2)` call.
     pub const O_EXCL: u32 = bindings::O_EXCL;
 
-    /// Large file size enabled (`off64_t` over `off_t`)
+    /// Large file size enabled (`off64_t` over `off_t`).
     pub const O_LARGEFILE: u32 = bindings::O_LARGEFILE;
 
     /// Do not update the file last access time.

rust/kernel/pages.rs

@@ -36,7 +36,7 @@ impl<const ORDER: u32> Pages<ORDER> {
         if pages.is_null() {
             return Err(ENOMEM);
         }
-        // INVARIANTS: We checked that the allocation above succeeded>
+        // INVARIANTS: We checked that the allocation above succeeded.
         Ok(Self { pages })
     }
 

rust/kernel/str.rs

@@ -228,7 +228,7 @@ impl fmt::Display for CStr {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         for &c in self.as_bytes() {
             if (0x20..0x7f).contains(&c) {
-                // Printable character
+                // Printable character.
                 f.write_char(c as char)?;
             } else {
                 write!(f, "\\x{:02x}", c)?;
@@ -258,7 +258,7 @@ impl fmt::Debug for CStr {
         f.write_str("\"")?;
         for &c in self.as_bytes() {
             match c {
-                // Printable characters
+                // Printable characters.
                 b'\"' => f.write_str("\\\"")?,
                 0x20..=0x7e => f.write_char(c as char)?,
                 _ => write!(f, "\\x{:02x}", c)?,

rust/macros/vtable.rs

@@ -7,7 +7,7 @@ use std::fmt::Write;
 pub(crate) fn vtable(_attr: TokenStream, ts: TokenStream) -> TokenStream {
     let mut tokens: Vec<_> = ts.into_iter().collect();
 
-    // Scan for the `trait` or `impl` keyword
+    // Scan for the `trait` or `impl` keyword.
     let is_trait = tokens
         .iter()
         .find_map(|token| match token {