Add SubmitArgs::min_wait_usec setter

Author: beviu

src/lib.rs

@@ -597,6 +597,14 @@ impl Parameters {
         self.0.features & sys::IORING_FEAT_RECVSEND_BUNDLE != 0
     }
 
+    /// If this flag is set, applications can use the
+    /// [`SubmitArgs::min_wait_usec`](types::SubmitArgs::min_wait_usec) method to specify a timeout
+    /// after which the kernel will return as soon as a single completion is received instead of
+    /// waiting for the minimum specified by the application. Available since kernel 6.12.
+    pub fn is_feature_min_timeout(&self) -> bool {
+        self.0.features & sys::IORING_FEAT_MIN_TIMEOUT != 0
+    }
+
     /// The number of submission queue entries allocated.
     pub fn sq_entries(&self) -> u32 {
         self.0.sq_entries

src/types.rs

@@ -262,6 +262,27 @@ impl<'prev, 'now> SubmitArgs<'prev, 'now> {
         }
     }
 
+    /// Sets a timeout in microseconds to start waiting for a minimum of a single completion.
+    ///
+    /// Once the timeout expires, the kernel will return when a single completion has been received
+    /// instead of waiting for the minimum amount of completions specified by the `want` parameter
+    /// in the call to [`Submitter::submit_and_wait`](crate::Submitter::submit_and_wait) or
+    /// [`Submitter::submit_with_args`](crate::Submitter::submit_with_args).
+    ///
+    /// Available since 6.12. Use the
+    /// [`Parameters::is_feature_min_timeout`](crate::Parameters::is_feature_min_timeout) method to
+    /// check for availability.
+    #[inline]
+    pub fn min_wait_usec<'new>(mut self, min_wait_usec: u32) -> SubmitArgs<'now, 'new> {
+        self.args.min_wait_usec = min_wait_usec;
+
+        SubmitArgs {
+            args: self.args,
+            prev: self.now,
+            now: PhantomData,
+        }
+    }
+
     #[inline]
     pub fn timespec<'new>(mut self, timespec: &'new Timespec) -> SubmitArgs<'now, 'new> {
         self.args.ts = cast_ptr(timespec) as _;