From ad8a3b86abc1cef7e3180f3f0e3b7ac099077c33 Mon Sep 17 00:00:00 2001
From: Mathijs Kwik <mathijs@bluescreen303.nl>
Date: Sun, 7 Jul 2013 22:40:20 +0200
Subject: [PATCH] linux-3.10: forward-port 9p speedup from 3.9

---
 pkgs/os-specific/linux/kernel/linux-3.10.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/os-specific/linux/kernel/linux-3.10.nix b/pkgs/os-specific/linux/kernel/linux-3.10.nix
index 8c48a5b6c841..bcf555201a27 100644
--- a/pkgs/os-specific/linux/kernel/linux-3.10.nix
+++ b/pkgs/os-specific/linux/kernel/linux-3.10.nix
@@ -247,6 +247,10 @@ let
       # Our initrd init uses shebang scripts, so can't be modular
       BINFMT_SCRIPT y
 
+      # Enable the 9P cache to speed up NixOS VM tests.
+      9P_FSCACHE y
+      9P_FS_POSIX_ACL y
+
       ${if kernelPlatform ? kernelExtraConfig then kernelPlatform.kernelExtraConfig else ""}
       ${extraConfig}
     '';