Attempt to mlock(2) SHMFILE in core.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@2558 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/shmlog.c

@@ -347,6 +347,10 @@ VSL_MgtInit(const char *fn, unsigned size)
 	    MAP_HASSEMAPHORE | MAP_NOSYNC | MAP_SHARED,
 	    heritage.vsl_fd, 0);
 	xxxassert(loghead != MAP_FAILED);
+	i = mlock(loghead, heritage.vsl_size);
+	if (i != 0)
+		fprintf(stderr, "Notice: locking SHMFILE in core failed: %s\n",
+		    strerror(errno));
 	VSL_stats = &loghead->stats;
 	pp = (void *)(loghead + 1);
 	*pp = *params;