From ef0c2a926899e91e1ea0503ede5dc2e747079db3 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Fri, 1 May 2020 18:45:51 +0200
Subject: [PATCH] Save a call to stopThreadedIOIfNeeded() for the base case.

Probably no performance changes, but the code should be trivial to
read as in "No threading? Use the normal function and return".
---
 src/networking.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/networking.c b/src/networking.c
index 767206ab9..d4c0306c3 100644
--- a/src/networking.c
+++ b/src/networking.c
@@ -2997,9 +2997,9 @@ int handleClientsWithPendingWritesUsingThreads(void) {
     int processed = listLength(server.clients_pending_write);
     if (processed == 0) return 0; /* Return ASAP if there are no clients. */
 
-    /* If we have just a few clients to serve, don't use I/O threads, but the
-     * boring synchronous code. */
-    if (stopThreadedIOIfNeeded()) {
+    /* If I/O threads are disabled or we have few clients to serve, don't
+     * use I/O threads, but thejboring synchronous code. */
+    if (server.io_threads_num == 1 || stopThreadedIOIfNeeded()) {
         return handleClientsWithPendingWrites();
     }