ZfsCompressedArcMeter: avoid division by 0

On systems not using ZFS `this->values[0]` is zero.

1 files changed, 5 insertions, 1 deletions

diff --git a/zfs/ZfsCompressedArcMeter.c b/zfs/ZfsCompressedArcMeter.c
index 9e5ef3ea..85fcee95 100644
--- a/zfs/ZfsCompressedArcMeter.c
+++ b/zfs/ZfsCompressedArcMeter.c
@@ -33,7 +33,11 @@ void ZfsCompressedArcMeter_readStats(Meter* this, const ZfsArcStats* stats) {
 }
 
 static void ZfsCompressedArcMeter_printRatioString(const Meter* this, char* buffer, size_t size) {
-   xSnprintf(buffer, size, "%.2f:1", this->total / this->values[0]);
+   if (this->values[0] > 0) {
+      xSnprintf(buffer, size, "%.2f:1", this->total / this->values[0]);
+   } else {
+      xSnprintf(buffer, size, "N/A");
+   }
 }
 
 static void ZfsCompressedArcMeter_updateValues(Meter* this) {