We don't need a vsl copy any more.

bin/varnishd/cache/cache_backend.c

@@ -356,7 +356,6 @@ vbe_CloseFd(struct vbc **vbp, const struct acct_bereq *acct_bereq)
 
 	bp = vc->backend;
 
-	vc->vsl = NULL;
 	VTCP_close(&vc->fd);
 	VBE_DropRefConn(bp, acct_bereq);
 	vc->backend = NULL;
@@ -380,8 +379,6 @@ vbe_RecycleFd(struct vbc **vbp, const struct acct_bereq *acct_bereq)
 
 	bp = vc->backend;
 
-	vc->vsl = NULL;
-
 	Lck_Lock(&bp->mtx);
 	VSC_C_main->backend_recycle++;
 	VTAILQ_INSERT_HEAD(&bp->connlist, vc, list);
@@ -409,9 +406,7 @@ vbe_dir_getfd(const struct director *d, struct busyobj *bo)
 		FIND_TMO(between_bytes_timeout,
 		    vc->between_bytes_timeout, bo, vs->vrt);
 	}
-	if (vc != NULL)
-		vc->vsl = bo->vsl;
-	else
+	if (vc == NULL)
 		VSLb(bo->vsl, SLT_FetchError, "no backend connection");
 	return (vc);
 }

bin/varnishd/cache/cache_backend.h

@@ -89,7 +89,6 @@ struct vbc {
 	VTAILQ_ENTRY(vbc)	list;
 	struct backend		*backend;
 	struct vbe_dir	*vdis;
-	struct vsl_log		*vsl;
 	int			fd;
 
 	struct suckaddr		*addr;