Index: sys/geom/label/g_label.c
===================================================================
--- sys/geom/label/g_label.c	(wersja 197737)
+++ sys/geom/label/g_label.c	(kopia robocza)
@@ -271,6 +271,10 @@ g_label_taste(struct g_class *mp, struct g_provide
 
 	G_LABEL_DEBUG(2, "Tasting %s.", pp->name);
 
+	/* Skip providers that are already open for writing. */
+	if (pp->acw > 0)
+		return (NULL);
+
 	if (strcmp(pp->geom->class->name, mp->name) == 0)
 		return (NULL);
 
Index: sys/geom/uzip/g_uzip.c
===================================================================
--- sys/geom/uzip/g_uzip.c	(wersja 197737)
+++ sys/geom/uzip/g_uzip.c	(kopia robocza)
@@ -363,6 +363,11 @@ g_uzip_taste(struct g_class *mp, struct g_provider
 
 	g_trace(G_T_TOPOLOGY, "g_uzip_taste(%s,%s)", mp->name, pp->name);
 	g_topology_assert();
+
+	/* Skip providers that are already open for writing. */
+	if (pp->acw > 0)
+		return (NULL);
+
 	buf = NULL;
 
 	/*
Index: sys/geom/shsec/g_shsec.c
===================================================================
--- sys/geom/shsec/g_shsec.c	(wersja 197737)
+++ sys/geom/shsec/g_shsec.c	(kopia robocza)
@@ -638,6 +638,10 @@ g_shsec_taste(struct g_class *mp, struct g_provide
 	g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name);
 	g_topology_assert();
 
+	/* Skip providers that are already open for writing. */
+	if (pp->acw > 0)
+		return (NULL);
+
 	G_SHSEC_DEBUG(3, "Tasting %s.", pp->name);
 
 	gp = g_new_geomf(mp, "shsec:taste");
Index: sys/geom/part/g_part.c
===================================================================
--- sys/geom/part/g_part.c	(wersja 197737)
+++ sys/geom/part/g_part.c	(kopia robocza)
@@ -1459,6 +1459,10 @@ g_part_taste(struct g_class *mp, struct g_provider
 	G_PART_TRACE((G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name));
 	g_topology_assert();
 
+	/* Skip providers that are already open for writing. */
+	if (pp->acw > 0)
+		return (NULL);
+
 	/*
 	 * Create a GEOM with consumer and hook it up to the provider.
 	 * With that we become part of the topology. Optain read access
Index: sys/geom/stripe/g_stripe.c
===================================================================
--- sys/geom/stripe/g_stripe.c	(wersja 197737)
+++ sys/geom/stripe/g_stripe.c	(kopia robocza)
@@ -912,6 +912,10 @@ g_stripe_taste(struct g_class *mp, struct g_provid
 	g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name);
 	g_topology_assert();
 
+	/* Skip providers that are already open for writing. */
+	if (pp->acw > 0)
+		return (NULL);
+
 	G_STRIPE_DEBUG(3, "Tasting %s.", pp->name);
 
 	gp = g_new_geomf(mp, "stripe:taste");
Index: sys/geom/concat/g_concat.c
===================================================================
--- sys/geom/concat/g_concat.c	(wersja 197737)
+++ sys/geom/concat/g_concat.c	(kopia robocza)
@@ -599,6 +599,10 @@ g_concat_taste(struct g_class *mp, struct g_provid
 	g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name);
 	g_topology_assert();
 
+	/* Skip providers that are already open for writing. */
+	if (pp->acw > 0)
+		return (NULL);
+
 	G_CONCAT_DEBUG(3, "Tasting %s.", pp->name);
 
 	gp = g_new_geomf(mp, "concat:taste");