From 9de1bd34708831d5b1501022d48ecee0fde3d191 Mon Sep 17 00:00:00 2001
From: attilio <attilio@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Mon, 25 Oct 2010 15:17:31 +0000
Subject: [PATCH] MFC r213181 by emaste: Protect the watchdog daemon against
 swap OOM killer.

Sponsored by:	Sandvine Incorporated


git-svn-id: svn://svn.freebsd.org/base/stable/8@214345 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 usr.sbin/watchdogd/watchdogd.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/usr.sbin/watchdogd/watchdogd.c b/usr.sbin/watchdogd/watchdogd.c
index 6f0e840e1..1fc180d9e 100644
--- a/usr.sbin/watchdogd/watchdogd.c
+++ b/usr.sbin/watchdogd/watchdogd.c
@@ -31,6 +31,7 @@
 #include <sys/types.h>
 __FBSDID("$FreeBSD$");
 
+#include <sys/mman.h>
 #include <sys/param.h>
 #include <sys/rtprio.h>
 #include <sys/stat.h>
@@ -117,6 +118,8 @@ main(int argc, char *argv[])
 		signal(SIGTERM, sighandler);
 
 		pidfile_write(pfh);
+		if (madvise(0, 0, MADV_PROTECT) != 0)
+			warn("madvise failed");
 
 		watchdog_loop();
 
-- 
2.45.0