Remove the zone limits for all the zones used in the ATM code.

These were a left over from when the private memory pools were
converted to use uma zones. The limit of UMA zones, however,
works differently. When a zone is limited to only one or two pages
than, on multi-cpu systems, processes can get stuck on the zonelimit,
because all remaining free items are in caches of other CPUs.

Also add rudimentary error handling in some places (panic) when a zone
cannot be created.

3 files changed, 8 insertions, 4 deletions

diff --git a/sys/netatm/spans/spans_arp.c b/sys/netatm/spans/spans_arp.c
index d8ff78b..9e8666c 100644
--- a/sys/netatm/spans/spans_arp.c
+++ b/sys/netatm/spans/spans_arp.c
@@ -365,7 +365,8 @@ spansarp_start()
 
 	spansarp_zone = uma_zcreate("spansarp", sizeof(struct spansarp),
 	    NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
-	uma_zone_set_max(spansarp_zone, 100);
+	if (spansarp_zone == NULL)
+		panic("spansarp_zone");
 }
 
 /*
diff --git a/sys/netatm/spans/spans_cls.c b/sys/netatm/spans/spans_cls.c
index bfd6c24..c135b33 100644
--- a/sys/netatm/spans/spans_cls.c
+++ b/sys/netatm/spans/spans_cls.c
@@ -250,7 +250,8 @@ spanscls_start()
 
 	spanscls_zone = uma_zcreate("spanscls", sizeof(struct spanscls),
 	    NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
-	uma_zone_set_max(spanscls_zone, 100);
+	if (spanscls_zone == NULL)
+		panic("spanscls_zone");
 
 	/*
 	 * Fill in union fields
diff --git a/sys/netatm/spans/spans_if.c b/sys/netatm/spans/spans_if.c
index 3ea781c..b0ae569 100644
--- a/sys/netatm/spans/spans_if.c
+++ b/sys/netatm/spans/spans_if.c
@@ -126,11 +126,13 @@ spans_start()
 
 	spans_vc_zone = uma_zcreate("spans vc", sizeof(struct spans_vccb),
 	    NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
-	uma_zone_set_max(spans_vc_zone, 50);
+	if (spans_vc_zone == NULL)
+		panic("spans_vc_zone");
 
 	spans_msg_zone = uma_zcreate("spans msg", sizeof(spans_msg), NULL,
 	    NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
-	uma_zone_set_max(spans_msg_zone, 50);
+	if (spans_msg_zone == NULL)
+		panic("spans_msg_zone");
 
 	/*
 	 * Allocate protocol definition structure