refactor: remove unused import

Author: Sean

src/api/server/sync_io.rs

@@ -59,14 +59,22 @@ impl<F: FileSystem + Sync> Server<F> {
     }
 
     #[cfg(feature = "fusedev")]
+    /// Send a resend notification message to the kernel via FUSE. This function should be invoked as part of 
+    /// the crash recovery routine. Given that FUSE initialization does not occur again during recovery, 
+    /// the capability to support resend notifications may not be automatically detected. It is the responsibility 
+    /// of the upper layers to verify and persist the kernel's support for this feature upon the initial FUSE setup.
     pub fn notify_resend<S: BitmapSlice>(
         &self, 
         mut w: FuseDevWriter<'_, S>,
     ) -> Result<()> {
         let mut buffer_writer = w.split_at(0).map_err(Error::FailedToSplitWriter)?;
-        let mut header = OutHeader::default();
-        header.unique = 0;
-        header.error = NotifyOpcode::Resend as i32;
+        let header = {
+            OutHeader{
+                unique: 0,
+                error: NotifyOpcode::Resend as i32,
+                ..Default::default()
+            }
+        };
         buffer_writer
             .write_obj(header)
             .map_err(Error::FailedToWrite)?;

tests/passthrough/src/main.rs

@@ -1,5 +1,3 @@
-use fuse_backend_rs::transport::FuseDevWriter;
-use fuse_backend_rs::transport::Writer;
 use log::{error, info, warn, LevelFilter};
 use std::env;
 use std::fs;
@@ -13,7 +11,6 @@ use signal_hook::{consts::TERM_SIGNALS, iterator::Signals};
 use fuse_backend_rs::api::{server::Server, Vfs, VfsOptions};
 use fuse_backend_rs::passthrough::{Config, PassthroughFs};
 use fuse_backend_rs::transport::{FuseChannel, FuseSession};
-use std::os::unix::io::{AsRawFd, FromRawFd, RawFd};
 
 use simple_logger::SimpleLogger;
 
@@ -63,7 +60,9 @@ impl Daemon {
         se.mount().unwrap();
 
         se.with_writer(|writer| {
-            self.server.notify_resend(writer).unwrap();
+            self.server
+                .notify_resend(writer)
+                .unwrap_or_else(|e| println!("failed to send resend notification {}", e));
         });
 
         for _ in 0..self.thread_cnt {