Loose the session watermark

bin/varnishd/cache/cache.h

@@ -611,7 +611,6 @@ struct sess {
 	struct http		*http0;
 
 	struct ws		ws[1];
-	char			*ws_ses;	/* WS above session data */
 	char			*ws_req;	/* WS above request data */
 
 	unsigned char		digest[DIGEST_LEN];

bin/varnishd/cache/cache_acceptor.c

@@ -32,7 +32,7 @@
  * The actual acceptance is done from cache_pool.c, by calling
  * into VCA_Accept() in this file.
  *
- * Once the session is allocated we move into it with a call to 
+ * Once the session is allocated we move into it with a call to
  * VCA_SetupSess().
  *
  * If we fail to allocate a session we call VCA_FailSess() to clean up

bin/varnishd/cache/cache_center.c

@@ -414,7 +414,7 @@ WSP(sp, SLT_Debug, "PHK req %.9f resp %.9f end %.9f open %.9f",
 	if (wrk->stats.client_req >= cache_param->wthread_stats_rate)
 		WRK_SumStat(wrk);
 	/* Reset the workspace to the session-watermark */
-	WS_Reset(sp->ws, sp->ws_ses);
+	WS_Reset(sp->ws, NULL);
 	WS_Reset(wrk->ws, NULL);
 
 	i = HTC_Reinit(sp->htc);
@@ -1039,9 +1039,6 @@ cnt_first(struct sess *sp)
 	}
 	sp->acct_ses.first = sp->t_open;
 
-	/* Record the session watermark */
-	sp->ws_ses = WS_Snapshot(sp->ws);
-
 	/* Receive a HTTP protocol request */
 	HTC_Init(sp->htc, sp->ws, sp->fd, sp->vsl_id,
 	    cache_param->http_req_size,