From ff348f4b6dc3e3c95370489d002ba7b7a04ae7d3 Mon Sep 17 00:00:00 2001
From: gnidorah <gnidorah@users.noreply.github.com>
Date: Fri, 7 Jul 2017 11:41:39 +0300
Subject: [PATCH] linux: Enable more I/O schedulers

---
 pkgs/os-specific/linux/kernel/common-config.nix | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/pkgs/os-specific/linux/kernel/common-config.nix b/pkgs/os-specific/linux/kernel/common-config.nix
index 912fb8dcee49..cdae5b289902 100644
--- a/pkgs/os-specific/linux/kernel/common-config.nix
+++ b/pkgs/os-specific/linux/kernel/common-config.nix
@@ -92,6 +92,14 @@ with stdenv.lib;
   # module, so that the initrd gets a good I/O scheduler.
   IOSCHED_CFQ y
   BLK_CGROUP y # required by CFQ
+  IOSCHED_DEADLINE y
+  ${optionalString (versionAtLeast version "4.11") ''
+    MQ_IOSCHED_DEADLINE y
+  ''}
+  ${optionalString (versionAtLeast version "4.12") ''
+    MQ_IOSCHED_KYBER y
+    IOSCHED_BFQ m
+  ''}
 
   # Enable NUMA.
   NUMA? y