Don't spawn notify unnecessary

crates/rust-analyzer/src/reload.rs

@@ -182,6 +182,7 @@ impl GlobalState {
                 }
             },
         };
+
         let watch = match self.config.files.watcher {
             FilesWatcher::Client => vec![],
             FilesWatcher::Notify => project_folders.watch,

crates/vfs-notify/src/include.rs

@@ -1,5 +1,4 @@
 //! See `Include`.
-
 use std::convert::TryFrom;
 
 use globset::{Glob, GlobSet, GlobSetBuilder};

crates/vfs-notify/src/lib.rs

@@ -82,11 +82,13 @@ impl NotifyActor {
                 Event::Message(msg) => match msg {
                     Message::Config(config) => {
                         self.watcher = None;
+                        if !config.watch.is_empty() {
                             let (watcher_sender, watcher_receiver) = unbounded();
                             let watcher = log_notify_error(Watcher::new_immediate(move |event| {
                                 watcher_sender.send(event).unwrap()
                             }));
                             self.watcher = watcher.map(|it| (it, watcher_receiver));
+                        }
 
                         let n_total = config.load.len();
                         self.send(loader::Message::Progress { n_total, n_done: 0 });