From 82ee23e6d0369067ee5da13e983134f6c79c15c8 Mon Sep 17 00:00:00 2001
From: Darien Raymond <admin@v2ray.com>
Date: Tue, 24 Jul 2018 21:58:47 +0200
Subject: [PATCH] make readv optional

---
 common/buf/io.go | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/common/buf/io.go b/common/buf/io.go
index e51db9502..737bd355e 100644
--- a/common/buf/io.go
+++ b/common/buf/io.go
@@ -54,14 +54,8 @@ var useReadv = false
 
 func init() {
 	const defaultFlagValue = "NOT_DEFINED_AT_ALL"
-	value := platform.NewEnvFlag("v2ray.buf.readv.disable").GetValue(func() string { return defaultFlagValue })
-	if value != defaultFlagValue {
-		useReadv = false
-		return
-	}
-
-	if runtime.GOOS == "linux" || runtime.GOOS == "darwin" {
-		newError("ReadV enabled").WriteToLog()
+	value := platform.NewEnvFlag("v2ray.buf.readv").GetValue(func() string { return defaultFlagValue })
+	if value != defaultFlagValue && (runtime.GOOS == "linux" || runtime.GOOS == "darwin") {
 		useReadv = true
 	}
 }