[PATCH] activation: set children oom_score_adj to 0

[WaLyong Cho]

If dbus is running as systemd service, dbus daemon is running with
oom_score_adj -900 by OOMScoreAdjust=-900. And children will also have
same value with dbus daemon.
To avoid this, set the child itself values after fork () to 0.
---
 dbus/dbus-spawn.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/dbus/dbus-spawn.c b/dbus/dbus-spawn.c
index afdcd68..155622b 100644
--- a/dbus/dbus-spawn.c
+++ b/dbus/dbus-spawn.c
@@ -1359,6 +1359,15 @@ _dbus_spawn_async_with_babysitter (DBusBabysitter          **sitter_p,
 	}
       else if (grandchild_pid == 0)
       {
+#ifdef __linux__
+          int fd = open ("/proc/self/oom_score_adj", O_WRONLY | O_CLOEXEC);
+
+          if (fd >= 0)
+            {
+              write (fd, "0", sizeof (char));
+              _dbus_close (fd, NULL);
+            }
+#endif
           /* Go back to ignoring SIGPIPE, since it's evil
            */
           signal (SIGPIPE, SIG_IGN);
-- 
2.5.5