From 57fdb5cfd2b20f47299a12c2050ff8bb2707c788 Mon Sep 17 00:00:00 2001
From: Colin Cross <ccross@android.com>
Date: Thu, 25 Jul 2013 10:34:30 -0700
Subject: [PATCH] add property to adjust extra_free_kbytes kernel vm tunable

ActivityManager can't directly write to extra_free_kbytes because
/proc/sys rejects all chown and chmod syscalls.  Proxy the writes
through init by using the sys.sysctl.extra_free_kbytes property.

Bug: 10024467
Change-Id: I441e00478421254355fcafb252bc878166483d4c
---
 rootdir/init.rc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rootdir/init.rc b/rootdir/init.rc
index 399028732..c7e96903e 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -402,6 +402,10 @@ on property:vold.decrypt=trigger_shutdown_framework
 on property:sys.powerctl=*
     powerctl ${sys.powerctl}
 
+# system server cannot write to /proc/sys files, so proxy it through init
+on property:sys.sysctl.extra_free_kbytes=*
+    write /proc/sys/vm/extra_free_kbytes ${sys.sysctl.extra_free_kbytes}
+
 ## Daemon processes to be run by init.
 ##
 service ueventd /sbin/ueventd