diff --git a/builtin/fsmonitor--daemon.c b/builtin/fsmonitor--daemon.c
index c8ec7b722e..b2a816dc3f 100644
--- a/builtin/fsmonitor--daemon.c
+++ b/builtin/fsmonitor--daemon.c
@@ -1439,7 +1439,7 @@ done:
 	return err;
 }
 
-static int try_to_run_foreground_daemon(int detach_console MAYBE_UNUSED)
+static int try_to_run_foreground_daemon(int detach_console)
 {
 	/*
 	 * Technically, we don't need to probe for an existing daemon
@@ -1459,10 +1459,21 @@ static int try_to_run_foreground_daemon(int detach_console MAYBE_UNUSED)
 		fflush(stderr);
 	}
 
+	if (detach_console) {
 #ifdef GIT_WINDOWS_NATIVE
-	if (detach_console)
 		FreeConsole();
+#else
+		/*
+		 * Create a new session so that the daemon is detached
+		 * from the parent's process group.  This prevents
+		 * shells with job control (e.g. bash with "set -m")
+		 * from waiting on the daemon when they wait for a
+		 * foreground command that implicitly spawned it.
+		 */
+		if (setsid() == -1)
+			warning_errno(_("setsid failed"));
 #endif
+	}
 
 	return !!fsmonitor_run_daemon();
 }
@@ -1525,6 +1536,7 @@ static int try_to_start_background_daemon(void)
 	cp.no_stdin = 1;
 	cp.no_stdout = 1;
 	cp.no_stderr = 1;
+	cp.close_fd_above_stderr = 1;
 
 	sbgr = start_bg_command(&cp, bg_wait_cb, NULL,
 				fsmonitor__start_timeout_sec);
diff --git a/fsmonitor-ipc.c b/fsmonitor-ipc.c
index f1b1631111..6112d13064 100644
--- a/fsmonitor-ipc.c
+++ b/fsmonitor-ipc.c
@@ -61,6 +61,9 @@ static int spawn_daemon(void)
 
 	cmd.git_cmd = 1;
 	cmd.no_stdin = 1;
+	cmd.no_stdout = 1;
+	cmd.no_stderr = 1;
+	cmd.close_fd_above_stderr = 1;
 	cmd.trace2_child_class = "fsmonitor";
 	strvec_pushl(&cmd.args, "fsmonitor--daemon", "start", NULL);